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Graham Walker

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Jessica Wojtaszek; Alan D D'Andrea; Sanjay D'Souza; Hyungjin Kim; Chul-Jin Lee; Brenda Minesinger; Graham C Walker; Pei Zhou
Structural basis of Rev1-mediated assembly of a quaternary vertebrate translesion polymerase complex consisting of Rev1, heterodimeric polymerase (Pol) ζ, and Pol κ.
James J Foti; James J Collins; Babho Devadoss; Jonathan A Winkler; Graham C Walker
Oxidation of the guanine nucleotide pool underlies cell death by bactericidal antibiotics.
Shree P Pandey; Janesh Kumar; Brenda Minesinger; Graham C Walker
A highly conserved protein of unknown function in Sinorhizobium meliloti affects sRNA regulation similar to Hfq.

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2012: Jessica Wojtaszek; Alan D D'Andrea; Sanjay D'Souza; Hyungjin Kim; Chul-Jin Lee; Brenda Minesinger; Graham C Walker; Pei Zhou
Structural basis of Rev1-mediated assembly of a quaternary vertebrate translesion polymerase complex consisting of Rev1, heterodimeric polymerase (Pol) ζ, and Pol κ.
The Journal of biological chemistry 2012;287(40):33836-46.
2012: James J Foti; James J Collins; Babho Devadoss; Jonathan A Winkler; Graham C Walker
Oxidation of the guanine nucleotide pool underlies cell death by bactericidal antibiotics.
Science (New York, N.Y.) 2012;336(6079):315-9.
2011: Shree P Pandey; Janesh Kumar; Brenda Minesinger; Graham C Walker
A highly conserved protein of unknown function in Sinorhizobium meliloti affects sRNA regulation similar to Hfq.
Nucleic acids research 2011;39(11):4691-708.
2011: James J Foti; Graham C Walker
Efficient extension of slipped DNA intermediates by DinB is required to escape primer template realignment by DnaQ.
Journal of bacteriology 2011;193(10):2637-41.
2011: Silvia Ardissone; Hajime Kobayashi; Kumiko Kambara; Coralie Rummel; K Dale Noel; Graham C Walker; William J Broughton; William J Deakin
Role of BacA in lipopolysaccharide synthesis, peptide transport, and nodulation by Rhizobium sp. strain NGR234.
Journal of bacteriology 2011;193(9):2218-28.
2011: Mary Ellen Wiltrout; Graham C Walker
Proteasomal regulation of the mutagenic translesion DNA polymerase, Saccharomyces cerevisiae Rev1.
DNA repair 2011;10(2):169-75.
2011: Susan E Cohen; Graham C Walker
New discoveries linking transcription to DNA repair and damage tolerance pathways.
Transcription 2011;2(1):37-40.
2011: Mary Ellen Wiltrout; Graham C Walker
The DNA polymerase activity of Saccharomyces cerevisiae Rev1 is biologically significant.
Genetics 2011;187(1):21-35.
2010: Kun Xie; Jason Doles; Michael T Hemann; Graham C Walker
Error-prone translesion synthesis mediates acquired chemoresistance.
Proceedings of the National Academy of Sciences of the United States of America 2010;107(48):20792-7.
2010: Jason Doles; Trudy Oliver; Eleanor R Cameron; Gerald Hsu; Tyler Jacks; Graham C Walker; Michael T Hemann
Suppression of Rev3, the catalytic subunit of Pol{zeta}, sensitizes drug-resistant lung tumors to chemotherapy.
Proceedings of the National Academy of Sciences of the United States of America 2010;107(48):20786-91.
2010: Rachel V Woodruff; Martha G Bomar; Sanjay D'Souza; Pei Zhou; Graham C Walker
The unusual UBZ domain of Saccharomyces cerevisiae polymerase η.
DNA repair 2010;9(11):1130-41.
2010: Bryan W Davies; Caroline Köhrer; Asha I Jacob; Lyle A Simmons; Jianyu Zhu; Lourdes M Aleman; Uttam L RajBhandary; Graham C Walker
Role of Escherichia coli YbeY, a highly conserved protein, in rRNA processing.
Molecular microbiology 2010;78(2):506-18.
2010: Susan E Cohen; Cindi A Lewis; Rachel A Mooney; Michael A Kohanski; James J Collins; Robert Landick; Graham C Walker
Roles for the transcription elongation factor NusA in both DNA repair and damage tolerance pathways in Escherichia coli.
Proceedings of the National Academy of Sciences of the United States of America 2010;107(35):15517-22.
2010: James J Foti; Angela M Delucia; Catherine M Joyce; Graham C Walker
UmuD(2) inhibits a non-covalent step during DinB-mediated template slippage on homopolymeric nucleotide runs.
The Journal of biological chemistry 2010;285(30):23086-95.
2010: Monica C Pillon; Jessica J Lorenowicz; Michael Uckelmann; Andrew D Klocko; Ryan R Mitchell; Yu Seon Chung; Paul Modrich; Graham C Walker; Lyle A Simmons; Peter Friedhoff; Alba Guarné
Structure of the endonuclease domain of MutL: unlicensed to cut.
Molecular cell 2010;39(1):145-51.
2010: James J Foti; Graham C Walker
SnapShot: DNA polymerases II mammals.
Cell 2010;141(2):370-370.e1.
2010: Lise Barra-Bily; Shree P Pandey; Annie Trautwetter; Carlos Blanco; Graham C Walker
The Sinorhizobium meliloti RNA chaperone Hfq mediates symbiosis of S. meliloti and alfalfa.
Journal of bacteriology 2010;192(6):1710-8.
2010: Lise Barra-Bily; Catherine Fontenelle; Gwenael Jan; Maud Flechard; Annie Trautwetter; Shree P Pandey; Graham C Walker; Carlos Blanco
Proteomic alterations explain phenotypic changes in Sinorhizobium meliloti lacking the RNA chaperone Hfq.
Journal of bacteriology 2010;192(6):1719-29.
2010: Susan E Cohen; Graham C Walker
The transcription elongation factor NusA is required for stress-induced mutagenesis in Escherichia coli.
Current biology : CB 2010;20(1):80-5.
2009: Daniel F Jarosz; Susan E Cohen; James C Delaney; John M Essigmann; Graham C Walker
A DinB variant reveals diverse physiological consequences of incomplete TLS extension by a Y-family DNA polymerase.
Proceedings of the National Academy of Sciences of the United States of America 2009;106(50):21137-42.
2009: Bryan W Davies; Michael A Kohanski; Lyle A Simmons; Jonathan A Winkler; James J Collins; Graham C Walker
Hydroxyurea induces hydroxyl radical-mediated cell death in Escherichia coli.
Molecular cell 2009;36(5):845-60.
2009: Penny J Beuning; Sarah Chan; Lauren S Waters; Haripriya Addepalli; Jaylene N Ollivierre; Graham C Walker
Characterization of novel alleles of the Escherichia coli umuDC genes identifies additional interaction sites of UmuC with the beta clamp.
Journal of bacteriology 2009;191(19):5910-20.
2009: Hajime Kobayashi; Nicole J De Nisco; Peter Chien; Lyle A Simmons; Graham C Walker
Sinorhizobium meliloti CpdR1 is critical for co-ordinating cell cycle progression and the symbiotic chronic infection.
Molecular microbiology 2009;73(4):586-600.
2009: Brenna W Shurtleff; Jaylene N Ollivierre; Mohammad Tehrani; Graham C Walker; Penny J Beuning
Steric gate variants of UmuC confer UV hypersensitivity on Escherichia coli.
Journal of bacteriology 2009;191(15):4815-23.
2009: Lauren S Waters; Brenda Minesinger; Mary Ellen Wiltrout; Sanjay D'Souza; Rachel V Woodruff; Graham C Walker
Eukaryotic translesion polymerases and their roles and regulation in DNA damage tolerance.
Microbiology and molecular biology reviews : MMBR 2009;73(1):134-54.
2009: Victoria L Marlow; Andreas F Haag; Hajime Kobayashi; Vivien Fletcher; Marco Scocchi; Graham C Walker; GP Ferguson
Essential role for the BacA protein in the uptake of a truncated eukaryotic peptide in Sinorhizobium meliloti.
Journal of bacteriology 2009;191(5):1519-27.
2009: Lyle A Simmons; Alexi I Goranov; Hajime Kobayashi; Bryan W Davies; Daniel S Yuan; Alan D Grossman; Graham C Walker
Comparison of responses to double-strand breaks between Escherichia coli and Bacillus subtilis reveals different requirements for SOS induction.
Journal of bacteriology 2009;191(4):1152-61.
2009: Susan E Cohen; Veronica G Godoy; Graham C Walker
Transcriptional modulator NusA interacts with translesion DNA polymerases in Escherichia coli.
Journal of bacteriology 2009;191(2):665-72.
2009: Pilar Domenech; Hajime Kobayashi; Kristin LeVier; Graham C Walker; Clifton E Barry
BacA, an ABC transporter involved in maintenance of chronic murine infections with Mycobacterium tuberculosis.
Journal of bacteriology 2009;191(2):477-85.
2008: Kathryn M Jones; Graham C Walker
Responses of the model legume Medicago truncatula to the rhizobial exopolysaccharide succinoglycan.
Plant signaling & behavior 2008;3(10):888-90.
2008: Lyle A Simmons; Alan D Grossman; Graham C Walker
Clp and Lon proteases occupy distinct subcellular positions in Bacillus subtilis.
Journal of bacteriology 2008;190(20):6758-68.
2008: Sanjay D'Souza; Lauren S Waters; Graham C Walker
Novel conserved motifs in Rev1 C-terminus are required for mutagenic DNA damage tolerance.
DNA repair 2008;7(9):1455-70.
2008: Roseli Wassem; Hajime Kobayashi; Kumiko Kambara; Antoine Le Quéré; Graham C Walker; William J Broughton; William J Deakin
TtsI regulates symbiotic genes in Rhizobium species NGR234 by binding to tts boxes.
Molecular microbiology 2008;68(3):736-48.
2008: J Nicole Kosarek; Rachel V Woodruff; Amanda Rivera-Begeman; Caixia Guo; Sanjay D'Souza; Eugene V Koonin; Graham C Walker; Errol C Friedberg
Comparative analysis of in vivo interactions between Rev1 protein and other Y-family DNA polymerases in animals and yeasts.
DNA repair 2008;7(3):439-51.
2008: Lyle A Simmons; Bryan W Davies; Alan D Grossman; Graham C Walker
Beta clamp directs localization of mismatch repair in Bacillus subtilis.
Molecular cell 2008;29(3):291-301.
2008: Michiko E Taga; Graham C Walker
Pseudo-B12 joins the cofactor family.
Journal of bacteriology 2008;190(4):1157-9.
2008: Bryan W Davies; Graham C Walker
A highly conserved protein of unknown function is required by Sinorhizobium meliloti for symbiosis and environmental stress protection.
Journal of bacteriology 2008;190(3):1118-23.
2008: Sharotka M Simon; F J R Sousa; Ronaldo Mohana-Borges; Graham C Walker
Regulation of Escherichia coli SOS mutagenesis by dimeric intrinsically disordered umuD gene products.
Proceedings of the National Academy of Sciences of the United States of America 2008;105(4):1152-7.
2008: Kathryn M Jones; Natalya Sharopova; Dasharath Prasad Lohar; Jennifer Q Zhang; Kathryn A VandenBosch; Graham C Walker
Differential response of the plant Medicago truncatula to its symbiont Sinorhizobium meliloti or an exopolysaccharide-deficient mutant.
Proceedings of the National Academy of Sciences of the United States of America 2008;105(2):704-9.
2008: Katherine E Gibson; Hajime Kobayashi; Graham C Walker
Molecular determinants of a symbiotic chronic infection.
Annual review of genetics 2008;42():413-41.
2008: Hajime Kobayashi; Lyle A Simmons; Daniel S Yuan; William J Broughton; Graham C Walker
Multiple Ku orthologues mediate DNA non-homologous end-joining in the free-living form and during chronic infection of Sinorhizobium meliloti.
Molecular microbiology 2008;67(2):350-63.
2007: Veronica G Godoy; Daniel F Jarosz; Sharotka M Simon; Alexej Abyzov; Valentin A Ilyin; Graham C Walker
UmuD and RecA directly modulate the mutagenic potential of the Y family DNA polymerase DinB.
Molecular cell 2007;28(6):1058-70.
2007: Kathryn M Jones; Hajime Kobayashi; Bryan W Davies; Michiko E Taga; Graham C Walker
How rhizobial symbionts invade plants: the Sinorhizobium-Medicago model.
Nature reviews. Microbiology 2007;5(8):619-33.
2007: Katherine E Gibson; Melanie J Barnett; Carol J Toman; Sharon R Long; Graham C Walker
The symbiosis regulator CbrA modulates a complex regulatory network affecting the flagellar apparatus and cell envelope proteins.
Journal of bacteriology 2007;189(9):3591-602.
2007: William L Neeley; Sarah Delaney; Yuriy O Alekseyev; Daniel F Jarosz; James C Delaney; Graham C Walker; John M Essigmann
DNA polymerase V allows bypass of toxic guanine oxidation products in vivo.
The Journal of biological chemistry 2007;282(17):12741-8.
2007: Daniel F Jarosz; Veronica G Godoy; Graham C Walker
Proficient and accurate bypass of persistent DNA lesions by DinB DNA polymerases.
Cell cycle (Georgetown, Tex.) 2007;6(7):817-22.
2007: Michiko E Taga; Nicholas A Larsen; Annaleise R Howard-Jones; Christopher T Walsh; Graham C Walker
BluB cannibalizes flavin to form the lower ligand of vitamin B12.
Nature 2007;446(7134):449-53.
2007: Bryan W Davies; Graham C Walker
Disruption of sitA compromises Sinorhizobium meliloti for manganese uptake required for protection against oxidative stress.
Journal of bacteriology 2007;189(5):2101-9.
2007: Bryan W Davies; Graham C Walker
Identification of novel Sinorhizobium meliloti mutants compromised for oxidative stress protection and symbiosis.
Journal of bacteriology 2007;189(5):2110-3.
2007: Kathryn M Jones; Javier Lloret; Joseph R Daniele; Graham C Walker
The type IV secretion system of Sinorhizobium meliloti strain 1021 is required for conjugation but not for intracellular symbiosis.
Journal of bacteriology 2007;189(5):2133-8.
2007: Daniel F Jarosz; Penny J Beuning; Susan E Cohen; Graham C Walker
Y-family DNA polymerases in Escherichia coli.
Trends in microbiology 2007;15(2):70-7.
2007: Lyle A Simmons; Alan D Grossman; Graham C Walker
Replication is required for the RecA localization response to DNA damage in Bacillus subtilis.
Proceedings of the National Academy of Sciences of the United States of America 2007;104(4):1360-5.
2007: Michelle A Parent; Radhika Goenka; Erin Murphy; Kristen Levier; Nuno Carreiro; Basil Golding; Gail Ferguson; R Martin Roop; Graham C Walker; Cynthia L Baldwin
Brucella abortus bacA mutant induces greater pro-inflammatory cytokines than the wild-type parent strain.
Microbes and infection / Institut Pasteur 2007;9(1):55-62.
2006: Sanjay D'Souza; Graham C Walker
Novel role for the C terminus of Saccharomyces cerevisiae Rev1 in mediating protein-protein interactions.
Molecular and cellular biology 2006;26(21):8173-82.
2006: Lise Barra; Catherine Fontenelle; Ermel Gwennola; Annie Trautwetter; Graham C Walker; Carlos Blanco
Interrelations between glycine betaine catabolism and methionine biosynthesis in Sinorhizobium meliloti strain 102F34.
Journal of bacteriology 2006;188(20):7195-204.
2006: Christian Staehelin; L Scott Forsberg; Wim D'Haeze; Mu-Yun Gao; Russell W Carlson; Zhi-Ping Xie; Brett J. Pellock; Kathryn M Jones; Graham C Walker; Wolfgang R. Streit; William J Broughton
Exo-oligosaccharides of Rhizobium sp. strain NGR234 are required for symbiosis with various legumes.
Journal of bacteriology 2006;188(17):6168-78.
2006: Lauren S Waters; Graham C Walker
The critical mutagenic translesion DNA polymerase Rev1 is highly expressed during G(2)/M phase rather than S phase.
Proceedings of the National Academy of Sciences of the United States of America 2006;103(24):8971-6.
2006: Katherine E Gibson; Gordon R O Campbell; Javier Lloret; Graham C Walker
CbrA is a stationary-phase regulator of cell surface physiology and legume symbiosis in Sinorhizobium meliloti.
Journal of bacteriology 2006;188(12):4508-21.
2006: Penny J Beuning; Sharotka M Simon; Adam Zemla; Daniel Barsky; Graham C Walker
A non-cleavable UmuD variant that acts as a UmuD' mimic.
The Journal of biological chemistry 2006;281(14):9633-40.
2006: Gail P Ferguson; An Jansen; Victoria L Marlow; Graham C Walker
BacA-mediated bleomycin sensitivity in Sinorhizobium meliloti is independent of the unusual lipid A modification.
Journal of bacteriology 2006;188(8):3143-8.
2006: Gordon R O Campbell; Michiko E Taga; Kavita Mistry; Javier Lloret; Peter J Anderson; John R Roth; Graham C Walker
Sinorhizobium meliloti bluB is necessary for production of 5,6-dimethylbenzimidazole, the lower ligand of B12.
Proceedings of the National Academy of Sciences of the United States of America 2006;103(12):4634-9.
2006: Veronica G Godoy; Daniel F Jarosz; Fabianne L Walker; Lyle A Simmons; Graham C Walker
Y-family DNA polymerases respond to DNA damage-independent inhibition of replication fork progression.
The EMBO journal 2006;25(4):868-79.
2006: Daniel F Jarosz; Veronica G Godoy; James C Delaney; John M Essigmann; Graham C Walker
A single amino acid governs enhanced activity of DinB DNA polymerases on damaged templates.
Nature 2006;439(7073):225-8.
2006: Dina Gould Halme; Julia Khodor; Rudolph Mitchell; Graham C Walker
A small-scale concept-based laboratory component: the best of both worlds.
CBE life sciences education 2006;5(1):41-51.
2006: Penny J Beuning; Sharotka M Simon; Veronica G Godoy; Daniel F Jarosz; Graham C Walker
Characterization of Escherichia coli translesion synthesis polymerases and their accessory factors.
Methods in enzymology 2006;408():318-40.
2006: Penny J Beuning; Dorota Sawicka; Daniel Barsky; Graham C Walker
Two processivity clamp interactions differentially alter the dual activities of UmuC.
Molecular microbiology 2006;59(2):460-74.
2005: Graham C Walker
Lighting torches in the DNA repair field: development of key concepts.
Mutation research 2005;577(1-2):14-23.
2005: Karen L Perry; Stephen J Elledge; Barbara B Mitchell; Lorraine Marsh; Graham C Walker
umuDC and mucAB operons whose products are required for UV light- and chemical-induced mutagenesis: UmuD, MucA, and LexA proteins share homology. 1985.
DNA repair 2005;4(9):1054-8.
2005: Cynthia Kenyon; Graham C Walker
DNA-damaging agents stimulate gene expression at specific loci in Escherichia coli. 1980.
DNA repair 2005;4(9):1049-53.
2005: Gail P Ferguson; Anup Datta; Russ W Carlson; Graham C Walker
Importance of unusually modified lipid A in Sinorhizobium stress resistance and legume symbiosis.
Molecular microbiology 2005;56(1):68-80.
2005: Sidney Altman; Bonnie L Bassler; Jon Beckwith; Marlene Belfort; Howard C Berg; Barry Bloom; Jean E Brenchley; Allan Campbell; R. John Collier; Nancy Connell; Nicholas R Cozzarelli; Nancy Craig; Seth Darst; Richard H. Ebright; Stephen J Elledge; Stanley Falkow; Jorge E Galan; Max Gottesman; Richard Gourse; Nigel D F Grindley; Carol A Gross; Alan Grossman; Ann Hochschild; Martha Howe; Jerard Hurwitz; Ralph R Isberg; Samuel Kaplan; Arthur Kornberg; Sydney G Kustu; Robert C Landick; Arthur Landy; Stuart B Levy; Richard Losick; Sharon R Long; Stanley R Maloy; John J Mekalanos; Frederick C Neidhardt; Norman R Pace; Mark Ptashne; Jeffrey W Roberts; John R Roth; Lucia B Rothman-Denes; Abigail A Salyers; Moselio Schaechter; Lucy Shapiro; Thomas J Silhavy; Melvin I Simon; Graham C Walker; Charles Yanofsky; Norton Zinder
An open letter to Elias Zerhouni.
Science (New York, N.Y.) 2005;307(5714):1409-10.
2004: Bryn A Bridges; Graham C Walker
Presidential honor for Evelyn Witkin.
DNA repair 2004;3(5):453-4.
2004: Gail P Ferguson; Anup Datta; John Baumgartner; R Martin Roop; Russ W Carlson; Graham C Walker
Similarity to peroxisomal-membrane protein family reveals that Sinorhizobium and Brucella BacA affect lipid-A fatty acids.
Proceedings of the National Academy of Sciences of the United States of America 2004;101(14):5012-7.
2004: Jill M Duzen; Graham C Walker; Mark D Sutton
Identification of specific amino acid residues in the E. coli beta processivity clamp involved in interactions with DNA polymerase III, UmuD and UmuD'.
DNA repair 2004;3(3):301-12.
2004: Julia Khodor; Dina Gould Halme; Graham C Walker
A hierarchical biology concept framework: a tool for course design.
Cell biology education 2004;3(2):111-21.
2003: Lise Barra; Nathalie Pica; Kamila Gouffi; Graham C Walker; Carlos Blanco; Annie Trautwetter
Glucose 6-phosphate dehydrogenase is required for sucrose and trehalose to be efficient osmoprotectants in Sinorhizobium meliloti.
FEMS microbiology letters 2003;229(2):183-8.
2003: Thien-Fah Mah; Betsey Pitts; Brett J. Pellock; Graham C Walker; Philip S Stewart; George A O'Toole
A genetic basis for Pseudomonas aeruginosa biofilm antibiotic resistance.
Nature 2003;426(6964):306-10.
2003: Gordon R O Campbell; Larissa A Sharypova; Heiko Scheidle; Kathryn M Jones; Karsten Niehaus; Anke Becker; Graham C Walker
Striking complexity of lipopolysaccharide defects in a collection of Sinorhizobium meliloti mutants.
Journal of bacteriology 2003;185(13):3853-62.
2002: R Martin Roop; Gregory T Robertson; Gail P Ferguson; Liesl E Milford; Malcolm E Winkler; Graham C Walker
Seeking a niche: putative contributions of the hfq and bacA gene products to the successful adaptation of the brucellae to their intracellular home.
Veterinary microbiology 2002;90(1-4):349-63.
2002: Gail P Ferguson; R Martin Roop; Graham C Walker
Deficiency of a Sinorhizobium meliloti BacA mutant in alfalfa symbiosis correlates with alteration of the cell envelope.
Journal of bacteriology 2002;184(20):5625-32.
2002: Brett J. Pellock; Max Teplitski; Ryan P Boinay; Wolfgang D Bauer; Graham C Walker
A LuxR homolog controls production of symbiotically active extracellular polysaccharide II by Sinorhizobium meliloti.
Journal of bacteriology 2002;184(18):5067-76.
2002: Mark D Sutton; Issay Narumi; Graham C Walker
Posttranslational modification of the umuD-encoded subunit of Escherichia coli DNA polymerase V regulates its interactions with the beta processivity clamp.
Proceedings of the National Academy of Sciences of the United States of America 2002;99(8):5307-12.
2002: Gordon R O Campbell; Bradley L Reuhs; Graham C Walker
Chronic intracellular infection of alfalfa nodules by Sinorhizobium meliloti requires correct lipopolysaccharide core.
Proceedings of the National Academy of Sciences of the United States of America 2002;99(6):3938-43.
2002: Mark D Sutton; Angelina Guzzo; Issay Narumi; Michael Costanzo; Christian Altenbach; Ann E Ferentz; Wayne L Hubbell; Graham C Walker
A model for the structure of the Escherichia coli SOS-regulated UmuD2 protein.
DNA repair 2002;1(1):77-93.
2002: Bradley T Smith; Alan D Grossman; Graham C Walker
Localization of UvrA and effect of DNA damage on the chromosome of Bacillus subtilis.
Journal of bacteriology 2002;184(2):488-93.
2001: Bradley T Smith; Alan D Grossman; Graham C Walker
Visualization of mismatch repair in bacterial cells.
Molecular cell 2001;8(6):1197-206.
2001: Kristen Levier; Graham C Walker
Genetic analysis of the Sinorhizobium meliloti BacA protein: differential effects of mutations on phenotypes.
Journal of bacteriology 2001;183(21):6444-53.
2001: T K Barthel; J Zhang; Graham C Walker
ATPase-defective derivatives of Escherichia coli DnaK that behave differently with respect to ATP-induced conformational change and peptide release.
Journal of bacteriology 2001;183(19):5482-90.
2001: Graham C Walker
To cleave or not to cleave? Insights from the LexA crystal structure.
Molecular cell 2001;8(3):486-7.
2001: AE Ferentz; Graham C Walker; Gerhard Wagner
Converting a DNA damage checkpoint effector (UmuD2C) into a lesion bypass polymerase (UmuD'2C).
The EMBO journal 2001;20(15):4287-98.
2001: Mark D Sutton; Graham C Walker
Managing DNA polymerases: coordinating DNA replication, DNA repair, and DNA recombination.
Proceedings of the National Academy of Sciences of the United States of America 2001;98(15):8342-9.
2001: H Ohmori; E C Friedberg; Robert Fuchs; M F Goodman; F Hanaoka; DC Hinkle; T A Kunkel; C W Lawrence; Z Livneh; T Nohmi; L Prakash; S Prakash; T Todo; Graham C Walker; Z Wang; R Woodgate
The Y-family of DNA polymerases.
Molecular cell 2001;8(1):7-8.
2001: Lai-Xi Wang; Luis G Melean; Peter H Seeberger; Graham C Walker
Biotin labeling of the symbiotically important succinoglycan oligosaccharides of Rhizobium meliloti for identification of putative plant receptors.
Carbohydrate research 2001;333(1):73-8.
2001: Mark D Sutton; M F Farrow; Briana M Burton; Graham C Walker
Genetic interactions between the Escherichia coli umuDC gene products and the beta processivity clamp of the replicative DNA polymerase.
Journal of bacteriology 2001;183(9):2897-909.
2001: Graham C Walker
Bryn Bridges and mutagenesis: exploring the intellectual space.
Mutation research 2001;485(1):69-81.
2001: Mark D Sutton; S Murli; T Opperman; C Klein; Graham C Walker
umuDC-dnaQ Interaction and its implications for cell cycle regulation and SOS mutagenesis in Escherichia coli.
Journal of bacteriology 2001;183(3):1085-9.
2001: Mark D Sutton; Graham C Walker
umuDC-mediated cold sensitivity is a manifestation of functions of the UmuD(2)C complex involved in a DNA damage checkpoint control.
Journal of bacteriology 2001;183(4):1215-24.
2001: Mark D Sutton; M Kim; Graham C Walker
Genetic and biochemical characterization of a novel umuD mutation: insights into a mechanism for UmuD self-cleavage.
Journal of bacteriology 2001;183(1):347-57.
2000: Brett J. Pellock; HP Cheng; Graham C Walker
Alfalfa root nodule invasion efficiency is dependent on Sinorhizobium meliloti polysaccharides.
Journal of bacteriology 2000;182(15):4310-8.
2000: Kristen Levier; RW Phillips; Vanessa K Grippe; R Martin Roop; Graham C Walker
Similar requirements of a plant symbiont and a mammalian pathogen for prolonged intracellular survival.
Science (New York, N.Y.) 2000;287(5462):2492-3.
2000: S Murli; T Opperman; Bradley T Smith; Graham C Walker
A role for the umuDC gene products of Escherichia coli in increasing resistance to DNA damage in stationary phase by inhibiting the transition to exponential growth.
Journal of bacteriology 2000;182(4):1127-35.
2000: Graham C Walker
Understanding the complexity of an organism's responses to DNA damage.
Cold Spring Harbor symposia on quantitative biology 2000;65():1-10.
2000: Mark D Sutton; Bradley T Smith; Veronica G Godoy; Graham C Walker
The SOS response: recent insights into umuDC-dependent mutagenesis and DNA damage tolerance.
Annual review of genetics 2000;34():479-497.
1999: T K Barthel; Graham C Walker
Inferences concerning the ATPase properties of DnaK and other HSP70s are affected by the ADP kinase activity of copurifying nucleoside-diphosphate kinase.
The Journal of biological chemistry 1999;274(51):36670-8.
1999: Michael W Mortimer; T R McDermott; G M York; Graham C Walker; Michael L Kahn
Citrate synthase mutants of Sinorhizobium meliloti are ineffective and have altered cell surface polysaccharides.
Journal of bacteriology 1999;181(24):7608-13.
1999: Lai-Xi Wang; Y Wang; Brett J. Pellock; Graham C Walker
Structural characterization of the symbiotically important low-molecular-weight succinoglycan of Sinorhizobium meliloti.
Journal of bacteriology 1999;181(21):6788-96.
1999: Mark D Sutton; T Opperman; Graham C Walker
The Escherichia coli SOS mutagenesis proteins UmuD and UmuD' interact physically with the replicative DNA polymerase.
Proceedings of the National Academy of Sciences of the United States of America 1999;96(22):12373-8.
1999: T Opperman; S Murli; Bradley T Smith; Graham C Walker
A model for a umuDC-dependent prokaryotic DNA damage checkpoint.
Proceedings of the National Academy of Sciences of the United States of America 1999;96(16):9218-23.
1999: Laura B Willis; Graham C Walker
A novel Sinorhizobium meliloti operon encodes an alpha-glucosidase and a periplasmic-binding-protein-dependent transport system for alpha-glucosides.
Journal of bacteriology 1999;181(14):4176-84.
1999: E Suzanne Paterson; M I Moré; G Pillay; C Cellini; R Woodgate; Graham C Walker; VN Iyer; Stephen C Winans
Genetic analysis of the mobilization and leading regions of the IncN plasmids pKM101 and pCU1.
Journal of bacteriology 1999;181(8):2572-83.
1999: T Ohta; Mark D Sutton; A Guzzo; S Cole; Ann E Ferentz; Graham C Walker
Mutations affecting the ability of the Escherichia coli UmuD' protein to participate in SOS mutagenesis.
Journal of bacteriology 1999;181(1):177-85.
1999: Graham C Walker
The centennial before the millennium: the journal of bacteriology as a world voice for microbiological research.
Journal of bacteriology 1999;181(1):1-3.
1998: J E González; Carlos E Semino; Lai-Xi Wang; L E Castellano-Torres; Graham C Walker
Biosynthetic control of molecular weight in the polymerization of the octasaccharide subunits of succinoglycan, a symbiotically important exopolysaccharide of Rhizobium meliloti.
Proceedings of the National Academy of Sciences of the United States of America 1998;95(23):13477-82.
1998: M Liu; J E González; Laura B Willis; Graham C Walker
A novel screening method for isolating exopolysaccharide-deficient mutants.
Applied and environmental microbiology 1998;64(11):4600-2.
1998: Gordon R O Campbell; Bradley L Reuhs; Graham C Walker
Different phenotypic classes of Sinorhizobium meliloti mutants defective in synthesis of K antigen.
Journal of bacteriology 1998;180(20):5432-6.
1998: HP Cheng; Graham C Walker
Succinoglycan is required for initiation and elongation of infection threads during nodulation of alfalfa by Rhizobium meliloti.
Journal of bacteriology 1998;180(19):5183-91.
1998: Graham C Walker
Skiing the black diamond slope: progress on the biochemistry of translesion DNA synthesis.
Proceedings of the National Academy of Sciences of the United States of America 1998;95(18):10348-50.
1998: J Zhang; Graham C Walker
Interactions of peptides with DnaK and C-terminal DnaK fragments studied using fluorescent and radioactive peptides.
Archives of biochemistry and biophysics 1998;356(2):177-86.
1998: Gregory M York; Graham C Walker
The succinyl and acetyl modifications of succinoglycan influence susceptibility of succinoglycan to cleavage by the Rhizobium meliloti glycanases ExoK and ExsH.
Journal of bacteriology 1998;180(16):4184-91.
1998: Laura B Willis; Graham C Walker
The phbC (poly-beta-hydroxybutyrate synthase) gene of Rhizobium (Sinorhizobium) meliloti and characterization of phbC mutants.
Canadian journal of microbiology 1998;44(6):554-64.
1998: Laura B Willis; Graham C Walker
Identification of the Rhizobium meliloti alcohol dehydrogenase gene (adhA) and heterologous expression in Alcaligenes eutrophus.
Biochimica et biophysica acta 1998;1384(2):197-203.
1998: C Herman; D Thévenet; Philippe Bouloc; Graham C Walker; Richard D'Ari
Degradation of carboxy-terminal-tagged cytoplasmic proteins by the Escherichia coli protease HflB (FtsH).
Genes & development 1998;12(9):1348-55.
1998: Gregory M York; Graham C Walker
The Rhizobium meliloti ExoK and ExsH glycanases specifically depolymerize nascent succinoglycan chains.
Proceedings of the National Academy of Sciences of the United States of America 1998;95(9):4912-7.
1998: Bradley T Smith; Graham C Walker
Mutagenesis and more: umuDC and the Escherichia coli SOS response.
Genetics 1998;148(4):1599-610.
1998: J T Konola; A Guzzo; J B Gow; Graham C Walker; Kendall L Knight
Differential cleavage of LexA and UmuD mediated by recA Pro67 mutants: implications for common LexA and UmuD binding sites on RecA.
Journal of molecular biology 1998;276(2):405-15.
1998: HP Cheng; Graham C Walker
Succinoglycan production by Rhizobium meliloti is regulated through the ExoS-ChvI two-component regulatory system.
Journal of bacteriology 1998;180(1):20-6.
1997: A E Ferentz; T Opperman; Graham C Walker; Gerhard Wagner
Dimerization of the UmuD' protein in solution and its implications for regulation of SOS mutagenesis.
Nature structural biology 1997;4(12):979-83.
1997: H G Nastri; A Guzzo; C S Lange; Graham C Walker; Kendall L Knight
Mutational analysis of the RecA protein L1 region identifies this area as a probable part of the co-protease substrate binding site.
Molecular microbiology 1997;25(5):967-78.
1997: Gregory M York; Graham C Walker
The Rhizobium meliloti exoK gene and prsD/prsE/exsH genes are components of independent degradative pathways which contribute to production of low-molecular-weight succinoglycan.
Molecular microbiology 1997;25(1):117-34.
1997: Michael J Ridout; Geoffrey J Brownsey; G M York; Graham C Walker; Victor J Morris
Effect of o-acyl substituents on the functional behaviour of Rhizobium meliloti succinoglycan.
International journal of biological macromolecules 1997;20(1):1-7.
1997: Anke Becker; Silvia Rüberg; Helge Küster; A A Roxlau; M Keller; T Ivashina; Hai-Ping Cheng; Graham C Walker; Alfred Pühler
The 32-kilobase exp gene cluster of Rhizobium meliloti directing the biosynthesis of galactoglucan: genetic organization and properties of the encoded gene products.
Journal of bacteriology 1997;179(4):1375-84.
1997: A Ichige; Graham C Walker
Genetic analysis of the Rhizobium meliloti bacA gene: functional interchangeability with the Escherichia coli sbmA gene and phenotypes of mutants.
Journal of bacteriology 1997;179(1):209-16.
1996: M H Lee; A Guzzo; Graham C Walker
Inhibition of RecA-mediated cleavage in covalent dimers of UmuD.
Journal of bacteriology 1996;178(24):7304-7.
1996: A Guzzo; M H Lee; K Oda; Graham C Walker
Analysis of the region between amino acids 30 and 42 of intact UmuD by a monocysteine approach.
Journal of bacteriology 1996;178(24):7295-303.
1996: M H Lee; Graham C Walker
Interactions of Escherichia coli UmuD with activated RecA analyzed by cross-linking UmuD monocysteine derivatives.
Journal of bacteriology 1996;178(24):7285-94.
1996: J E González; Gregory M York; Graham C Walker
Rhizobium meliloti exopolysaccharides: synthesis and symbiotic function.
Gene 1996;179(1):141-6.
1996: J Zhang; Graham C Walker
Identification of elements of the peptide binding site of DnaK by peptide cross-linking.
The Journal of biological chemistry 1996;271(33):19668-74.
1996: J E González; B L Reuhs; Graham C Walker
Low molecular weight EPS II of Rhizobium meliloti allows nodule invasion in Medicago sativa.
Proceedings of the National Academy of Sciences of the United States of America 1996;93(16):8636-41.
1996: T Opperman; S Murli; Graham C Walker
The genetic requirements for UmuDC-mediated cold sensitivity are distinct from those for SOS mutagenesis.
Journal of bacteriology 1996;178(15):4400-11.
1996: Jane Glazebrook; A Ichige; Graham C Walker
Genetic analysis of Rhizobium meliloti bacA-phoA fusion results in identification of degP: two loci required for symbiosis are closely linked to degP.
Journal of bacteriology 1996;178(3):745-52.
1995: J Zhang; M H Lee; Graham C Walker
P-azidoiodoacetanilide, a new short photocrosslinker that has greater cysteine specificity than p-azidophenacyl bromide and p-azidobromoacetanilide.
Biochemical and biophysical research communications 1995;217(3):1177-84.
1995: C Chouly; Ian J Colquhoun; A Jodelet; G York; Graham C Walker
NMR studies of succinoglycan repeating-unit octasaccharides from Rhizobium meliloti and Agrobacterium radiobacter.
International journal of biological macromolecules 1995;17(6):357-63.
1995: Graham C Walker
SOS-regulated proteins in translesion DNA synthesis and mutagenesis.
Trends in biochemical sciences 1995;20(10):416-20.
1995: B M Saget; D E Shevell; Graham C Walker
Alteration of lysine 178 in the hinge region of the Escherichia coli ada protein interferes with activation of ada, but not alkA, transcription.
Journal of bacteriology 1995;177(5):1268-74.
1994: B M Saget; Graham C Walker
The Ada protein acts as both a positive and a negative modulator of Escherichia coli's response to methylating agents.
Proceedings of the National Academy of Sciences of the United States of America 1994;91(21):9730-4.
1994: C E Donnelly; S Murli; Graham C Walker
The groE gene products of Escherichia coli are dispensable for mucA+B(+)-dependent UV mutagenesis.
Mutation research 1994;309(2):225-33.
1994: M H Lee; T Ohta; Graham C Walker
A monocysteine approach for probing the structure and interactions of the UmuD protein.
Journal of bacteriology 1994;176(16):4825-37.
1994: BB Reinhold; S Y Chan; TL Reuber; A Marra; Graham C Walker; V N Reinhold
Detailed structural characterization of succinoglycan, the major exopolysaccharide of Rhizobium meliloti Rm1021.
Journal of bacteriology 1994;176(7):1997-2002.
1994: J S McCarty; Graham C Walker
DnaK mutants defective in ATPase activity are defective in negative regulation of the heat shock response: expression of mutant DnaK proteins results in filamentation.
Journal of bacteriology 1994;176(3):764-80.
1994: John A Leigh; Graham C Walker
Exopolysaccharides of Rhizobium: synthesis, regulation and symbiotic function.
Trends in genetics : TIG 1994;10(2):63-7.
1993: M A Glucksmann; TL Reuber; Graham C Walker
Genes needed for the modification, polymerization, export, and processing of succinoglycan by Rhizobium meliloti: a model for succinoglycan biosynthesis.
Journal of bacteriology 1993;175(21):7045-55.
1993: M A Glucksmann; TL Reuber; Graham C Walker
Family of glycosyl transferases needed for the synthesis of succinoglycan by Rhizobium meliloti.
Journal of bacteriology 1993;175(21):7033-44.
1993: S Murli; Graham C Walker
SOS mutagenesis.
Current opinion in genetics & development 1993;3(5):719-25.
1993: Jane Glazebrook; A Ichige; Graham C Walker
A Rhizobium meliloti homolog of the Escherichia coli peptide-antibiotic transport protein SbmA is essential for bacteroid development.
Genes & development 1993;7(8):1485-97.
1993: TL Reuber; Graham C Walker
Biosynthesis of succinoglycan, a symbiotically important exopolysaccharide of Rhizobium meliloti.
Cell 1993;74(2):269-80.
1993: TL Reuber; Graham C Walker
The acetyl substituent of succinoglycan is not necessary for alfalfa nodule invasion by Rhizobium meliloti Rm1021.
Journal of bacteriology 1993;175(11):3653-5.
1993: B Bukau; P Reilly; J McCarty; Graham C Walker
Immunogold localization of the DnaK heat shock protein in Escherichia coli cells.
Journal of general microbiology 1993;139(1):95-9.
1992: G D Barsomian; A Urzainqui; K Lohman; Graham C Walker
Rhizobium meliloti mutants unable to synthesize anthranilate display a novel symbiotic phenotype.
Journal of bacteriology 1992;174(13):4416-26.
1992: A Urzainqui; Graham C Walker
Exogenous suppression of the symbiotic deficiencies of Rhizobium meliloti exo mutants.
Journal of bacteriology 1992;174(10):3403-6.
1992: C E Donnelly; Graham C Walker
Coexpression of UmuD' with UmuC suppresses the UV mutagenesis deficiency of groE mutants.
Journal of bacteriology 1992;174(10):3133-9.
1992: Jane Glazebrook; G Meiri; Graham C Walker
Genetic mapping of symbiotic loci on the Rhizobium meliloti chromosome.
Molecular plant-microbe interactions : MPMI 1992;5(3):223-7.
1992: D R Palleros; K L Reid; J S McCarty; Graham C Walker; Anthony L Fink
DnaK, hsp73, and their molten globules. Two different ways heat shock proteins respond to heat.
The Journal of biological chemistry 1992;267(8):5279-85.
1992: S Klein; K Lohman; R Clover; Graham C Walker; E R Signer
A directional, high-frequency chromosomal mobilization system for genetic mapping of Rhizobium meliloti.
Journal of bacteriology 1992;174(1):324-6.
1991: TL Reuber; A Urzainqui; Jane Glazebrook; J W Reed; Graham C Walker
Rhizobium meliloti exopolysaccharides. Structures, genetic analyses, and symbiotic roles.
Annals of the New York Academy of Sciences 1991;646():61-8.
1991: J W Reed; Graham C Walker
Acidic conditions permit effective nodulation of alfalfa by invasion-deficient Rhizobium meliloti exoD mutants.
Genes & development 1991;5(12A):2274-87.
1991: J S McCarty; Graham C Walker
DnaK as a thermometer: threonine-199 is site of autophosphorylation and is critical for ATPase activity.
Proceedings of the National Academy of Sciences of the United States of America 1991;88(21):9513-7.
1991: D E Shevell; Graham C Walker
A region of the Ada DNA-repair protein required for the activation of ada transcription is not necessary for activation of alkA.
Proceedings of the National Academy of Sciences of the United States of America 1991;88(20):9001-5.
1991: L Marsh; T Nohmi; S Hinton; Graham C Walker
New mutations in cloned Escherichia coli umuDC genes: novel phenotypes of strains carrying a umuC125 plasmid.
Mutation research 1991;250(1-2):183-97.
1991: L T Haber; Graham C Walker
Altering the conserved nucleotide binding motif in the Salmonella typhimurium MutS mismatch repair protein affects both its ATPase and mismatch binding activities.
The EMBO journal 1991;10(9):2707-15.
1991: TL Reuber; J Reed; Jane Glazebrook; M A Glucksmann; D Ahmann; A Marra; Graham C Walker
Rhizobium meliloti exopolysaccharides: genetic analyses and symbiotic importance.
Biochemical Society transactions 1991;19(3):636-41.
1991: J W Reed; M Capage; Graham C Walker
Rhizobium meliloti exoG and exoJ mutations affect the exoX-exoY system for modulation of exopolysaccharide production.
Journal of bacteriology 1991;173(12):3776-88.
1991: J W Reed; Jane Glazebrook; Graham C Walker
The exoR gene of Rhizobium meliloti affects RNA levels of other exo genes but lacks homology to known transcriptional regulators.
Journal of bacteriology 1991;173(12):3789-94.
1991: J W Reed; Graham C Walker
The exoD gene of Rhizobium meliloti encodes a novel function needed for alfalfa nodule invasion.
Journal of bacteriology 1991;173(2):664-77.
1991: TL Reuber; S Long; Graham C Walker
Regulation of Rhizobium meliloti exo genes in free-living cells and in planta examined by using TnphoA fusions.
Journal of bacteriology 1991;173(2):426-34.
1991: J Glazebrook; Graham C Walker
Genetic techniques in Rhizobium meliloti.
Methods in enzymology 1991;204():398-418.
1990: B Bukau; Graham C Walker
Mutations altering heat shock specific subunit of RNA polymerase suppress major cellular defects of E. coli mutants lacking the DnaK chaperone.
The EMBO journal 1990;9(12):4027-36.
1990: D E Shevell; B M Friedman; Graham C Walker
Resistance to alkylation damage in Escherichia coli: role of the Ada protein in induction of the adaptive response.
Mutation research 1990;233(1-2):53-72.
1990: Hiroshi Iwasaki; A Nakata; Graham C Walker; Hideo Shinagawa
The Escherichia coli polB gene, which encodes DNA polymerase II, is regulated by the SOS system.
Journal of bacteriology 1990;172(11):6268-73.
1990: K P McNally; Nancy E Freitag; Graham C Walker
LexA-independent expression of a mutant mucAB operon.
Journal of bacteriology 1990;172(11):6223-31.
1990: J R Battista; T Ohta; T Nohmi; W Sun; Graham C Walker
Dominant negative umuD mutations decreasing RecA-mediated cleavage suggest roles for intact UmuD in modulation of SOS mutagenesis.
Proceedings of the National Academy of Sciences of the United States of America 1990;87(18):7190-4.
1990: G R Her; J Glazebrook; Graham C Walker; V N Reinhold
Structural studies of a novel exopolysaccharide produced by a mutant of Rhizobium meliloti strain Rm1021.
Carbohydrate research 1990;198(2):305-12.
1990: A Kaufman; Graham C Walker
A constitutive O6-methylguanine-DNA methyltransferase of Rhizobium meliloti.
Mutation research 1990;235(3):165-9.
1990: Jane Glazebrook; J W Reed; TL Reuber; Graham C Walker
Genetic analyses of Rhizobium meliloti exopolysaccharides.
International journal of biological macromolecules 1990;12(2):67-70.
1990: T Nohmi; J R Battista; T Ohta; V Igras; W Sun; Graham C Walker
Antimutagenic effect of umuD mutant plasmids: isolation and characterization of umuD mutants reduced in their ability to promote UV mutagenesis in Escherichia coli.
Basic life sciences 1990;52():417-21.
1990: J R Battista; T Nohmi; C E Donnelly; Graham C Walker
Genetic analyses of cellular functions required for UV mutagenesis in Escherichia coli.
Basic life sciences 1990;52():269-75.
1990: J R Battista; C E Donnelly; T Ohta; Graham C Walker
The SOS response and induced mutagenesis.
Progress in clinical and biological research 1990;340A():169-78.
1989: B Bukau; Graham C Walker
Delta dnaK52 mutants of Escherichia coli have defects in chromosome segregation and plasmid maintenance at normal growth temperatures.
Journal of bacteriology 1989;171(11):6030-8.
1989: C E Donnelly; Graham C Walker
groE mutants of Escherichia coli are defective in umuDC-dependent UV mutagenesis.
Journal of bacteriology 1989;171(11):6117-25.
1989: J A Mankovich; C A McIntyre; Graham C Walker
Nucleotide sequence of the Salmonella typhimurium mutL gene required for mismatch repair: homology of MutL to HexB of Streptococcus pneumoniae and to PMS1 of the yeast Saccharomyces cerevisiae.
Journal of bacteriology 1989;171(10):5325-31.
1989: Marie Dutreix; P L Moreau; A Bailone; F Galibert; J R Battista; Graham C Walker; R Devoret
New recA mutations that dissociate the various RecA protein activities in Escherichia coli provide evidence for an additional role for RecA protein in UV mutagenesis.
Journal of bacteriology 1989;171(5):2415-23.
1989: B Bukau; Graham C Walker
Cellular defects caused by deletion of the Escherichia coli dnaK gene indicate roles for heat shock protein in normal metabolism.
Journal of bacteriology 1989;171(5):2337-46.
1989: Jane Glazebrook; Graham C Walker
A novel exopolysaccharide can function in place of the calcofluor-binding exopolysaccharide in nodulation of alfalfa by Rhizobium meliloti.
Cell 1989;56(4):661-72.
1989: J R Battista; T Nohmi; C E Donnelly; Graham C Walker
Amino acid similarities to other proteins offer insights into roles of UmuD and UmuC in mutagenesis.
Genome / National Research Council Canada = Génome / Conseil national de recherches Canada 1989;31(2):594-6.
1989: Graham C Walker
General principles of DNA repair in microorganisms and implications for future research.
Birth defects original article series 1989;25(2):45-59.
1988: D E Shevell; P K LeMotte; Graham C Walker
Alteration of the carboxyl-terminal domain of Ada protein influences its inducibility, specificity, and strength as a transcriptional activator.
Journal of bacteriology 1988;170(11):5263-71.
1988: S Long; S McCune; Graham C Walker
Symbiotic loci of Rhizobium meliloti identified by random TnphoA mutagenesis.
Journal of bacteriology 1988;170(9):4257-65.
1988: D Doherty; J A Leigh; Jane Glazebrook; Graham C Walker
Rhizobium meliloti mutants that overproduce the R. meliloti acidic calcofluor-binding exopolysaccharide.
Journal of bacteriology 1988;170(9):4249-56.
1988: S Long; J W Reed; J Himawan; Graham C Walker
Genetic analysis of a cluster of genes required for synthesis of the calcofluor-binding exopolysaccharide of Rhizobium meliloti.
Journal of bacteriology 1988;170(9):4239-48.
1988: D E Shevell; A M Abou-Zamzam; B Demple; Graham C Walker
Construction of an Escherichia coli K-12 ada deletion by gene replacement in a recD strain reveals a second methyltransferase that repairs alkylated DNA.
Journal of bacteriology 1988;170(7):3294-6.
1988: T Nohmi; J R Battista; L A Dodson; Graham C Walker
RecA-mediated cleavage activates UmuD for mutagenesis: mechanistic relationship between transcriptional derepression and posttranslational activation.
Proceedings of the National Academy of Sciences of the United States of America 1988;85(6):1816-20.
1988: S Klein; Graham C Walker; E R Signer
All nod genes of Rhizobium meliloti are involved in alfalfa nodulation by exo mutants.
Journal of bacteriology 1988;170(2):1003-6.
1988: L T Haber; P P Pang; D I Sobell; J A Mankovich; Graham C Walker
Nucleotide sequence of the Salmonella typhimurium mutS gene required for mismatch repair: homology of MutS and HexA of Streptococcus pneumoniae.
Journal of bacteriology 1988;170(1):197-202.
1987: John A Leigh; J W Reed; J F Hanks; Ann Hirsch; Graham C Walker
Rhizobium meliloti mutants that fail to succinylate their calcofluor-binding exopolysaccharide are defective in nodule invasion.
Cell 1987;51(4):579-87.
1987: L Marsh; Graham C Walker
New phenotypes associated with mucAB: alteration of a MucA sequence homologous to the LexA cleavage site.
Journal of bacteriology 1987;169(5):1818-23.
1987: K H Paek; Graham C Walker
Escherichia coli dnaK null mutants are inviable at high temperature.
Journal of bacteriology 1987;169(1):283-90.
1986: G F De Vos; Graham C Walker; E R Signer
Genetic manipulations in Rhizobium meliloti utilizing two new transposon Tn5 derivatives.
Molecular & general genetics : MGG 1986;204(3):485-91.
1986: K H Paek; Graham C Walker
Defect in expression of heat-shock proteins at high temperature in xthA mutants.
Journal of bacteriology 1986;165(3):763-70.
1986: L Marsh; Graham C Walker
Mutagenic DNA repair in bacteria: the role of UmuDC and MucAB.
Basic life sciences 1986;38():273-80.
1986: L Marsh; L A Dodson; C Dykstra; D Sobell; Graham C Walker
Genetic analyses of the roles of umuDC and mucAB in mutagenesis.
Basic life sciences 1986;39():251-7.
1985: Graham C Walker; L Marsh; L Dodson
Cellular responses to DNA damage.
Environmental health perspectives 1985;62():115-7.
1985: John A Leigh; E R Signer; Graham C Walker
Exopolysaccharide-deficient mutants of Rhizobium meliloti that form ineffective nodules.
Proceedings of the National Academy of Sciences of the United States of America 1985;82(18):6231-5.
1985: P P Pang; A S Lundberg; Graham C Walker
Identification and characterization of the mutL and mutS gene products of Salmonella typhimurium LT2.
Journal of bacteriology 1985;163(3):1007-15.
1985: K L Perry; S J Elledge; B B Mitchell; L Marsh; Graham C Walker
umuDC and mucAB operons whose products are required for UV light- and chemical-induced mutagenesis: UmuD, MucA, and LexA proteins share homology.
Proceedings of the National Academy of Sciences of the United States of America 1985;82(13):4331-5.
1985: P J Langer; K L Perry; Graham C Walker
Complementation of a pKM101 derivative that decreases resistance to UV killing but increases susceptibility to mutagenesis.
Mutation research 1985;150(1-2):147-58.
1985: M Yoshihama; K Higashiro; E A Rao; M Akedo; W G Shanabruch; M T Follettie; Graham C Walker; Anthony J Sinskey
Cloning vector system for Corynebacterium glutamicum.
Journal of bacteriology 1985;162(2):591-7.
1985: S J Elledge; Graham C Walker
Phasmid vectors for identification of genes by complementation of Escherichia coli mutants.
Journal of bacteriology 1985;162(2):777-83.
1985: T M Finan; Ann Hirsch; John A Leigh; E Johansen; G A Kuldau; S Deegan; Graham C Walker; E R Signer
Symbiotic mutants of Rhizobium meliloti that uncouple plant from bacterial differentiation.
Cell 1985;40(4):869-77.
1985: L Marsh; Graham C Walker
Cold sensitivity induced by overproduction of UmuDC in Escherichia coli.
Journal of bacteriology 1985;162(1):155-61.
1985: P K Lemotte; Graham C Walker
Induction and autoregulation of ada, a positively acting element regulating the response of Escherichia coli K-12 to methylating agents.
Journal of bacteriology 1985;161(3):888-95.
1985: S C Winans; S J Elledge; J H Krueger; Graham C Walker
Site-directed insertion and deletion mutagenesis with cloned fragments in Escherichia coli.
Journal of bacteriology 1985;161(3):1219-21.
1985: Graham C Walker; L Marsh; L A Dodson
Genetic analyses of DNA repair: inference and extrapolation.
Annual review of genetics 1985;19():103-26.
1985: Graham C Walker
Mutagenesis-enhancement by plasmids in mutagenesis tester strains.
Basic life sciences 1985;34():111-20.
1985: Graham C Walker
Inducible DNA repair systems.
Annual review of biochemistry 1985;54():425-57.
1985: S C Winans; Graham C Walker
Identification of pKM101-encoded loci specifying potentially lethal gene products.
Journal of bacteriology 1985;161(1):417-24.
1985: S C Winans; Graham C Walker
Fertility inhibition of RP1 by IncN plasmid pKM101.
Journal of bacteriology 1985;161(1):425-7.
1985: S C Winans; Graham C Walker
Entry exclusion determinant(s) of IncN plasmid pKM101.
Journal of bacteriology 1985;161(1):411-6.
1985: S C Winans; Graham C Walker
Conjugal transfer system of the IncN plasmid pKM101.
Journal of bacteriology 1985;161(1):402-10.
1984: B E Markham; J E Harper; D W Mount; G B Sancar; Aziz Sancar; W D Rupp; Cynthia Kenyon; Graham C Walker
Analysis of mRNA synthesis following induction of the Escherichia coli SOS system.
Journal of molecular biology 1984;178(2):237-48.
1984: G F De Vos; T M Finan; E R Signer; Graham C Walker
Host-dependent transposon Tn5-mediated streptomycin resistance.
Journal of bacteriology 1984;159(1):395-9.
1984: T M Finan; E Hartweig; K LeMieux; K Bergman; Graham C Walker; E R Signer
General transduction in Rhizobium meliloti.
Journal of bacteriology 1984;159(1):120-4.
1984: J H Yerkes; L P Casson; A K Honkanen; Graham C Walker
Anaerobiosis induces expression of ant, a new Escherichia coli locus with a role in anaerobic electron transport.
Journal of bacteriology 1984;158(1):180-6.
1984: Graham C Walker
Mutagenesis and inducible responses to deoxyribonucleic acid damage in Escherichia coli.
Microbiological reviews 1984;48(1):60-93.
1984: J H Krueger; Graham C Walker
groEL and dnaK genes of Escherichia coli are induced by UV irradiation and nalidixic acid in an htpR+-dependent fashion.
Proceedings of the National Academy of Sciences of the United States of America 1984;81(5):1499-503.
1984: P P Pang; S D Tsen; A S Lundberg; Graham C Walker
The mutH, mutL, mutS, and uvrD genes of Salmonella typhimurium LT2.
Cold Spring Harbor symposia on quantitative biology 1984;49():597-602.
1983: S J Elledge; Graham C Walker
The muc genes of pKM101 are induced by DNA damage.
Journal of bacteriology 1983;155(3):1306-15.
1983: P P Pang; Graham C Walker
The Salmonella typhimurium LT2 uvrD gene is regulated by the lexA gene product.
Journal of bacteriology 1983;154(3):1502-4.
1983: S C Winans; Graham C Walker
Genetic localization and characterization of a pKM101-coded endonuclease.
Journal of bacteriology 1983;154(3):1117-25.
1983: J H Krueger; S J Elledge; Graham C Walker
Isolation and characterization of Tn5 insertion mutations in the lexA gene of Escherichia coli.
Journal of bacteriology 1983;153(3):1368-78.
1983: P P Pang; Graham C Walker
Identification of the uvrD gene product of Salmonella typhimurium LT2.
Journal of bacteriology 1983;153(3):1172-9.
1983: S J Elledge; Graham C Walker
Proteins required for ultraviolet light and chemical mutagenesis. Identification of the products of the umuC locus of Escherichia coli.
Journal of molecular biology 1983;164(2):175-92.
1983: W G Shanabruch; R P Rein; I Behlau; Graham C Walker
Mutagenesis, by methylating and ethylating agents, in mutH, mutL, mutS, and uvrD mutants of Salmonella typhimurium LT2.
Journal of bacteriology 1983;153(1):33-44.
1983: Graham C Walker; S J Elledge; K L Perry; A Bagg; Cynthia Kenyon
Regulation and function of cellular gene products involved in UV and chemical mutagenesis in E. coli.
Basic life sciences 1983;23():181-202.
1983: J H Krueger; Graham C Walker
Mud(Ap, lac)-generated fusions in studies of gene expression.
Methods in enzymology 1983;100():501-9.
1983: Graham C Walker
Genetic strategies in strain design for fermentations.
Basic life sciences 1983;25():349-76.
1982: K L Perry; Graham C Walker
Identification of plasmid (pKM101)-coded proteins involved in mutagenesis and UV resistance.
Nature 1982;300(5889):278-81.
1982: Cynthia Kenyon; R Brent; Mark Ptashne; Graham C Walker
Regulation of damage-inducible genes in Escherichia coli.
Journal of molecular biology 1982;160(3):445-57.
1982: Graham C Walker; S J Elledge; Cynthia Kenyon; J H Krueger; K L Perry
Mutagenesis and other responses induced by DNA damage in Escherichia coli.
Biochimie 1982;64(8-9):607-10.
1982: John Mulligan; W Margolin; J H Krueger; Graham C Walker
Mutations affecting regulation of methionine biosynthetic genes isolated by use of met-lac fusions.
Journal of bacteriology 1982;151(2):609-19.
1982: Graham C Walker; Cynthia Kenyon; A Bagg; P J Langer; W G Shanabruch
Mutagenesis and cellular responses to DNA damage.
National Cancer Institute monograph 1982;60():257-67.
1982: Graham C Walker; Cynthia Kenyon; A Bagg; S J Elledge; K L Perry; W G Shanabruch
Regulation and functions of Escherichia coli genes induced by DNA damage.
Basic life sciences 1982;20():43-63.
1981: A Bagg; Cynthia Kenyon; Graham C Walker
Inducibility of a gene product required for UV and chemical mutagenesis in Escherichia coli.
Proceedings of the National Academy of Sciences of the United States of America 1981;78(9):5749-53.
1981: W G Shanabruch; I Behlau; Graham C Walker
Spontaneous mutators of salmonella typhimurium LT2 generated by insertion of transposable elements.
Journal of bacteriology 1981;147(3):827-35.
1981: P J Langer; W G Shanabruch; Graham C Walker
Functional organization of plasmid pKM101.
Journal of bacteriology 1981;145(3):1310-6.
1981: C J Kenyon; Graham C Walker
Expression of the E. coli uvrA gene is inducible.
Nature 1981;289(5800):808-10.
1981: P J Langer; Graham C Walker
Restriction endonuclease cleavage map of pKM101: relationship to parental plasmid R46.
Molecular & general genetics : MGG 1981;182(2):268-72.
1980: P P Dobson; Graham C Walker
Plasmid (pKM101)-mediated Weigle reactivation in Escherichia coli K12 and Salmonella typhimurium LT2: genetic dependence, kinetics of induction, and effect of chloramphenicol.
Mutation research 1980;71(1):25-41.
1980: C J Kenyon; Graham C Walker
DNA-damaging agents stimulate gene expression at specific loci in Escherichia coli.
Proceedings of the National Academy of Sciences of the United States of America 1980;77(5):2819-23.
1980: W G Shanabruch; Graham C Walker
Localization of the plasmid (pKM101) gene(s) involved in recA+lexA+-dependent mutagenesis.
Molecular & general genetics : MGG 1980;179(2):289-97.
1979: Graham C Walker; P P Dobson
Mutagenesis and repair deficiencies of Escherichia coli umuC mutants are suppressed by the plasmid pKM101.
Molecular & general genetics : MGG 1979;172(1):17-24.
1979: J W Kronish; Graham C Walker
The effects of the ultraviolet-protecting plasmids pKM101 and R205 on DNA polymerase I activity in Escherichia coli K-12.
Mutation research 1979;60(2):135-42.
1979: T Fujii; Graham C Walker; N J Leonard
3-Substituted adenines. In vitro enzyme inhibition and antiviral activity.
Journal of medicinal chemistry 1979;22(2):125-9.
1979: Graham C Walker
Mutagenesis- and repair-enhancing activities associated with the plasmid pKM101.
Cold Spring Harbor symposia on quantitative biology 1979;43 Pt 2():893-6.
1978: Graham C Walker
Inducible reactivation and mutagenesis of UV-irradiated bacteriophage P22 in Salmonella typhimurium LT2 containing the plasmid pKM101.
Journal of bacteriology 1978;135(2):415-21.
1978: Graham C Walker
Isolation and characterization of mutants of the plasmid pKM101 deficient in their ability to enhance mutagenesis and repair.
Journal of bacteriology 1978;133(3):1203-11.
1977: D Lackey; Graham C Walker; T Keng; S Linn
Characterization of an endonuclease associated with the drug resistance plasmid pKM101.
Journal of bacteriology 1977;131(2):583-8.
1977: Graham C Walker
Plasmid (pKM101)-mediated enhancement of repair and mutagenesis: dependence on chromosomal genes in Escherichia coli K-12.
Molecular & general genetics : MGG 1977;152(1):93-103.
1975: Graham C Walker; O C Uhlenbeck
Stepwise enzymatic oligoribonucleotide synthesis including modified nucleotides.
Biochemistry 1975;14(4):817-24.
1975: Graham C Walker; O C Uhlenbeck; E Bedows; Richard I Gumport
T4-induced RNA ligase joins single-stranded oligoribonucleotides.
Proceedings of the National Academy of Sciences of the United States of America 1975;72(1):122-6.
1974: D B Arter; Graham C Walker; O C Uhlenbeck; P G Schmidt
PMR or the self-complementary oligoribonucleotide CpCpGpG.
Biochemical and biophysical research communications 1974;61(4):1089-94.