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Steffen Porwollik

Research Profile

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Oligonucleotide Array Sequence Analysis

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Genes & Molecular Sequences

Physiology

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Virulence

Chemicals & Drugs

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Gene Expression Profiling

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Publications

TOP 3
Mudit Chandra; Pui Cheng; Steffen Porwollik; Gaelle Rondeau; Michael McClelland
A single step multiplex PCR for identification of six diarrheagenic E. coli pathotypes and Salmonella.
Jotham Suez; Vered Agmon; Amir Dagan; Prerak T Desai; Alex Marzel; Michael McClelland; Steffen Porwollik; Galia Rahav; Yosef Ilan Schorr; Ohad Gal-Mor
Virulence gene profiling and pathogenicity characterization of non-typhoidal Salmonella accounted for invasive disease in humans.
Amy L Kullas; Michael McClelland; Joseph B McPhee; Patricio Mena; Steffen Porwollik; Jason W Tam; AnnMarie Torres; Helene Andrews-Polymenis; Lydia Bogomolnaya; Hee-Jeong Yang; Adrianus W M van der Velden
L-asparaginase II produced by Salmonella typhimurium inhibits T cell responses and mediates virulence.

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All Publications

2013: Mudit Chandra; Pui Cheng; Steffen Porwollik; Gaelle Rondeau; Michael McClelland
A single step multiplex PCR for identification of six diarrheagenic E. coli pathotypes and Salmonella.
International journal of medical microbiology : IJMM 2013;303(4):210-6.
2013: Jotham Suez; Vered Agmon; Amir Dagan; Prerak T Desai; Alex Marzel; Michael McClelland; Steffen Porwollik; Galia Rahav; Yosef Ilan Schorr; Ohad Gal-Mor
Virulence gene profiling and pathogenicity characterization of non-typhoidal Salmonella accounted for invasive disease in humans.
PloS one 2013;8(3):e58449.
2012: Amy L Kullas; Michael McClelland; Joseph B McPhee; Patricio Mena; Steffen Porwollik; Jason W Tam; AnnMarie Torres; Helene Andrews-Polymenis; Lydia Bogomolnaya; Hee-Jeong Yang; Adrianus W M van der Velden
L-asparaginase II produced by Salmonella typhimurium inhibits T cell responses and mediates virulence.
Cell host & microbe 2012;12(6):791-8.
2012: Nadia Gruzdev; Michael McClelland; Shany Ofaim; Riky Pinto; Steffen Porwollik; Shlomo Saldinger-Sela
Global transcriptional analysis of dehydrated Salmonella enterica serovar Typhimurium.
Applied and environmental microbiology 2012;78(22):7866-75.
2012: Joyce E Karlinsey; Michael McClelland; Steffen Porwollik; Hannah F Robbins; Vinai Chittezham Thomas; Rodolfo Urbano; Iel-Soo Bang; Lynne A Becker; Elaine R Frawley; Ferric C Fang
The NsrR regulon in nitrosative stress resistance of Salmonella enterica serovar Typhimurium.
Molecular microbiology 2012;85(6):1179-93.
2012: Rolf D Joerger; Michael McClelland; Casey Sartori; Carl Schmidt; Jennifer B Turpin; Jonathan G Frye; Steffen Porwollik
Gene expression analysis of Salmonella enterica Enteritidis Nal(R) and Salmonella enterica Kentucky 3795 exposed to HCl and acetic acid in rich medium.
Foodborne pathogens and disease 2012;9(4):331-7.
2012: Ohad Gal-Mor; Eyal Leshem; Michael McClelland; Steffen Porwollik; Eliezer Schwartz; Jotham Suez; Lea Valinsky; Dana Elhadad; Galia Rahav
Molecular and cellular characterization of a Salmonella enterica serovar Paratyphi a outbreak strain and the human immune response to infection.
Clinical and vaccine immunology : CVI 2012;19(2):146-56.
2012: Cecilia A Silva; Cecilia S Toro; Mercedes Zaldívar; Helene Andrews-Polymenis; Carlos Blondel; Inés Contreras; Michael McClelland; Steffen Porwollik; Carolina P Quezada; Carlos A Santiviago
Infection of mice by Salmonella enterica serovar Enteritidis involves additional genes that are absent in the genome of serovar Typhimurium.
Infection and immunity 2012;80(2):839-49.
2012: Rocio Canals; Sandra W Clifton; Catrina Fronick; Brian M M Ahmer; Helene L Andrews-Polymenis; Steffen Porwollik; Xiao-Qin Xia; Michael McClelland
High-throughput comparison of gene fitness among related bacteria.
BMC genomics 2012;13():212.
2012: Matthew C Swearingen; Prerak T Desai; Michael McClelland; Steffen Porwollik; Brian M M Ahmer
Virulence of 32 Salmonella strains in mice.
PloS one 2012;7(4):e36043.
2012: Eduardo H Morales; Steffen Porwollik; Iván L Calderón; Bernardo Collao; Fernando Gil; Michael McClelland; Claudia P Saavedra
Hypochlorous acid and hydrogen peroxide-induced negative regulation of Salmonella enterica serovar Typhimurium ompW by the response regulator ArcA.
BMC microbiology 2012;12():63.
2011: Reena Lamichhane-Khadka; Michael McClelland; Steffen Porwollik; Jonathan G Frye; Robert J Maier
Hydrogen-stimulated carbon acquisition and conservation in Salmonella enterica serovar Typhimurium.
Journal of bacteriology 2011;193(20):5824-32.
2011: Li Bie; Pui Cheng; Yan Ju; Steffen Porwollik; Gaelle Rondeau; Xiao-Qin Xia; Gang Zhao; Michael McClelland
The accuracy of survival time prediction for patients with glioma is improved by measuring mitotic spindle checkpoint gene expression.
PloS one 2011;6(10):e25631.
2011: Bryan Troxell; Ryan Fink; Michael McClelland; Steffen Porwollik; Hosni M Hassan
The Fur regulon in anaerobically grown Salmonella enterica sv. Typhimurium: identification of new Fur targets.
BMC microbiology 2011;11():236.
2011: Charles Ansong; Meagan C Burnet; Fred Heffron; Marcus Jones; Jessica L Martin; Michael McClelland; Matthew E Monroe; Samuel H Payne; Scott N Peterson; Steffen Porwollik; Samuel O Purvine; Richard D Smith; Nikola Tolić; Pratap Venepally; Hyunjin Yoon; Joshua N Adkins
Experimental annotation of post-translational features and translated coding regions in the pathogen Salmonella Typhimurium.
BMC genomics 2011;12():433.
2011: Matthew R Evans; Ryan Fink; Andrés Vazquez-Torres; Steffen Porwollik; Jessica Jones-Carson; Michael McClelland; Hosni M Hassan
Analysis of the ArcA regulon in anaerobically grown Salmonella enterica sv. Typhimurium.
BMC microbiology 2011;11():58.
2010: Stephen J Libby; Michael A Brehm; Dale L Greiner; Leonard D Shultz; Michael McClelland; Kelly D Smith; Brad T Cookson; Joyce E Karlinsey; Traci L Kinkel; Steffen Porwollik; Rocio Canals; Lisa A Cummings; Ferric C Fang
Humanized nonobese diabetic-scid IL2rgammanull mice are susceptible to lethal Salmonella Typhi infection.
Proceedings of the National Academy of Sciences of the United States of America 2010;107(35):15589-94.
2010: Xiao-Qin Xia; Zhenyu Jia; Steffen Porwollik; Fred Long; Claudia Hoemme; Kai Ye; Carsten Müller-Tidow; Michael McClelland; Yipeng Wang
Evaluating oligonucleotide properties for DNA microarray probe design.
Nucleic acids research 2010;38(11):e121.
2010: Carlos A Santiviago; Carlos Blondel; Carolina P Quezada; Cecilia A Silva; Pia M Tobar; Steffen Porwollik; Michael McClelland; Helene L Andrews-Polymenis; Cecilia Toro; Mercedes Zaldívar; Inés Contreras
Spontaneous excision of the Salmonella enterica serovar Enteritidis-specific defective prophage-like element phiSE14.
Journal of bacteriology 2010;192(8):2246-54.
2010: Jonathan G Frye; Rebecca L Lindsey; Gaelle Rondeau; Steffen Porwollik; Fred Long; Michael McClelland; Charlene R Jackson; Mark D Englen; Richard J Meinersmann; Mark E Berrang; Johnnie A Davis; John B Barrett; Jennifer B Turpin; Sutawee N Thitaram; Paula J Fedorka-Cray
Development of a DNA microarray to detect antimicrobial resistance genes identified in the National Center for Biotechnology Information database.
Microbial drug resistance (Larchmont, N.Y.) 2010;16(1):9-19.
2010: Eva Kucerova; Sandra W Clifton; Xiao-Qin Xia; Fred Long; Steffen Porwollik; Lucinda Fulton; Catrina Fronick; Patrick Minx; Kim Kyung; Wesley Warren; Robert Fulton; Dongyan Feng; Aye Wollam; Neha Shah; Veena Bhonagiri; William E Nash; Kymberlie Hallsworth-Pepin; Richard K Wilson; Michael McClelland; Stephen J Forsythe
Genome sequence of Cronobacter sakazakii BAA-894 and comparative genomic hybridization analysis with other Cronobacter species.
PloS one 2010;5(3):e9556.
2010: Edel O'Regan; Teresa Quinn; Jonathan G Frye; Jean-Marie Pagès; Steffen Porwollik; Paula J Fedorka-Cray; Michael McClelland; Séamus Fanning
Fitness costs and stability of a high-level ciprofloxacin resistance phenotype in Salmonella enterica serotype enteritidis: reduced infectivity associated with decreased expression of Salmonella pathogenicity island 1 genes.
Antimicrobial agents and chemotherapy 2010;54(1):367-74.
2009: Xiao-Qin Xia; Michael McClelland; Steffen Porwollik; Wenzhi Song; Xianling Cong; Yipeng Wang
WebArrayDB: cross-platform microarray data analysis and public data repository.
Bioinformatics (Oxford, England) 2009;25(18):2425-9.
2009: Carlos A Santiviago; M Megan Reynolds; Steffen Porwollik; Sang-Ho Choi; Fred Long; Helene L Andrews-Polymenis; Michael McClelland
Analysis of pools of targeted Salmonella deletion mutants identifies novel genes affecting fitness during competitive infection in mice.
PLoS pathogens 2009;5(7):e1000477.
2009: Hyunjin Yoon; Jason E McDermott; Steffen Porwollik; Michael McClelland; Fred Heffron
Coordinated regulation of virulence during systemic infection of Salmonella enterica serovar Typhimurium.
PLoS pathogens 2009;5(2):e1000306.
2009: Charles Ansong; Hyunjin Yoon; Steffen Porwollik; Heather Mottaz-Brewer; Brianne O Petritis; Navdeep Jaitly; Joshua N Adkins; Michael McClelland; Fred Heffron; Richard D Smith
Global systems-level analysis of Hfq and SmpB deletion mutants in Salmonella: implications for virulence and global protein translation.
PloS one 2009;4(3):e4809.
2009: massimo merighi; Alecia N Septer; Amanda Carroll-Portillo; Aditi Bhatiya; Steffen Porwollik; Michael McClelland; John S Gunn
Genome-wide analysis of the PreA/PreB (QseB/QseC) regulon of Salmonella enterica serovar Typhimurium.
BMC microbiology 2009;9():42.
2008: Krisztina M Papp-Wallace; Margaret Nartea; David G Kehres; Steffen Porwollik; Michael McClelland; Stephen J Libby; Ferric C Fang; Michael E Maguire
The CorA Mg2+ channel is required for the virulence of Salmonella enterica serovar typhimurium.
Journal of bacteriology 2008;190(19):6517-23.
2008: Joy Scaria; Raghavan U M Palaniappan; David Chiu; Julie Ann Phan; Lalit Ponnala; Patrick McDonough; Yrjo T Grohn; Steffen Porwollik; Michael McClelland; Chien-Shun Chiou; Chishih Chu; Yung-Fu Chang
Microarray for molecular typing of Salmonella enterica serovars.
Molecular and cellular probes 2008;22(4):238-43.
2008: Nabil Arrach; Steffen Porwollik; Pui Cheng; Ann Cho; Fred Long; Sang-Ho Choi; Michael McClelland
Salmonella serovar identification using PCR-based detection of gene presence and absence.
Journal of clinical microbiology 2008;46(8):2581-9.
2008: Nabil Arrach; Ming Zhao; Steffen Porwollik; Robert M Hoffman; Michael McClelland
Salmonella promoters preferentially activated inside tumors.
Cancer research 2008;68(12):4827-32.
2008: Nathan L Tintle; Aaron A Best; Matthew DeJongh; Dirk Van Bruggen; Fred Heffron; Steffen Porwollik; Ronald C Taylor
Gene set analyses for interpreting microarray experiments on prokaryotic organisms.
BMC bioinformatics 2008;9():469.
2008: Travis J Bourret; Steffen Porwollik; Michael McClelland; Rui Zhao; Todd Greco; Harry Ischiropoulos; Andrés Vázquez-Torres
Nitric oxide antagonizes the acid tolerance response that protects Salmonella against innate gastric defenses.
PloS one 2008;3(3):e1833.
2007: Dipankar Manna; Steffen Porwollik; Michael McClelland; Ruimin Tan; N Patrick Higgins
Microarray analysis of Mu transposition in Salmonella enterica, serovar Typhimurium: transposon exclusion by high-density DNA binding proteins.
Molecular microbiology 2007;66(2):315-28.
2007: Ryan Fink; Matthew R Evans; Steffen Porwollik; Andrés Vazquez-Torres; Jessica Jones-Carson; Bryan Troxell; Stephen J Libby; Michael McClelland; Hosni M Hassan
FNR is a global regulator of virulence and anaerobic metabolism in Salmonella enterica serovar Typhimurium (ATCC 14028s).
Journal of bacteriology 2007;189(6):2262-73.
2007: Steffen Porwollik; Michael McClelland
Determination of the gene content of Salmonella genomes by microarray analysis.
Methods in molecular biology (Clifton, N.J.) 2007;394():89-103.
2007: William O Ward; Carol D Swartz; Steffen Porwollik; Sarah H Warren; Nancy M Hanley; Geremy W Knapp; Michael McClelland; David M DeMarini
Toxicogenomic analysis incorporating operon-transcriptional coupling and toxicant concentration-expression response: analysis of MX-treated Salmonella.
BMC bioinformatics 2007;8():378.
2006: Min-Su Kang; Thomas E Besser; Dale D Hancock; Steffen Porwollik; Michael McClelland; Douglas R Call
Identification of specific gene sequences conserved in contemporary epidemic strains of Salmonella enterica.
Applied and environmental microbiology 2006;72(11):6938-47.
2006: Sébastien P Faucher; Steffen Porwollik; Charles M Dozois; Michael McClelland; France Daigle
[Salmonella transcriptome during macrophage infection].
Médecine sciences : M/S 2006;22(10):792-3.
2006: William Wiley Navarre; Steffen Porwollik; Yipeng Wang; Michael McClelland; Henry Rosen; Stephen J Libby; Ferric C Fang
Selective silencing of foreign DNA with low GC content by the H-NS protein in Salmonella.
Science (New York, N.Y.) 2006;313(5784):236-8.
2006: Javier Garaizar; Aitor Rementeria; Steffen Porwollik
DNA microarray technology: a new tool for the epidemiological typing of bacterial pathogens?
FEMS immunology and medical microbiology 2006;47(2):178-89.
2006: Sébastien P Faucher; Steffen Porwollik; Charles M Dozois; Michael McClelland; France Daigle
Transcriptome of Salmonella enterica serovar Typhi within macrophages revealed through the selective capture of transcribed sequences.
Proceedings of the National Academy of Sciences of the United States of America 2006;103(6):1906-11.
2006: Jonathan G Frye; Troy Jesse; Fred Long; Gaelle Rondeau; Steffen Porwollik; Michael McClelland; Charlene R Jackson; Mark D Englen; Paula J Fedorka-Cray
DNA microarray detection of antimicrobial resistance genes in diverse bacteria.
International journal of antimicrobial agents 2006;27(2):138-51.
2005: Steffen Porwollik; C A Santiviago; Pui Cheng; Liliana Florea; Scott Jackson; Michael McClelland
Differences in gene content between Salmonella enterica serovar Enteritidis isolates and comparison to closely related serovars Gallinarum and Dublin.
Journal of bacteriology 2005;187(18):6545-55.
2005: Cesar A Morales; Steffen Porwollik; Jonathan G Frye; Hailu Kinde; Michael McClelland; Jean Guard-Bouldin
Correlation of phenotype with the genotype of egg-contaminating Salmonella enterica serovar Enteritidis.
Applied and environmental microbiology 2005;71(8):4388-99.
2005: Qingfeng Wang; Asaka Suzuki; Susana Mariconda; Steffen Porwollik; Rasika M Harshey
Sensing wetness: a new role for the bacterial flagellum.
The EMBO journal 2005;24(11):2034-42.
2005: F Jerry Reen; E Fidelma Boyd; Steffen Porwollik; Brenda P Murphy; Deirdre Gilroy; Séamus Fanning; Michael McClelland
Genomic comparisons of Salmonella enterica serovar Dublin, Agona, and Typhimurium strains recently isolated from milk filters and bovine samples from Ireland, using a Salmonella microarray.
Applied and environmental microbiology 2005;71(3):1616-25.
2005: Jonathan G Frye; Steffen Porwollik; Felisa Blackmer; Pui Cheng; Michael McClelland
Host gene expression changes and DNA amplification during temperate phage induction.
Journal of bacteriology 2005;187(4):1485-92.
2004: R Allen Helm; Steffen Porwollik; April E Stanley; Stanley Maloy; Michael McClelland; Wolfgang Rabsch; Abraham Eisenstark
Pigeon-associated strains of Salmonella enterica serovar Typhimurium phage type DT2 have genomic rearrangements at rRNA operons.
Infection and immunity 2004;72(12):7338-41.
2004: Steffen Porwollik; E Fidelma Boyd; carmen choy; Pui Cheng; Liliana Florea; E Proctor; Michael McClelland
Characterization of Salmonella enterica subspecies I genovars by use of microarrays.
Journal of bacteriology 2004;186(17):5883-98.
2004: Satheesh Nair; Suneetha Alokam; Sushma Kothapalli; Steffen Porwollik; Emily Proctor; carmen choy; Michael McClelland; Shu-Lin Liu; Kenneth E Sanderson
Salmonella enterica serovar Typhi strains from which SPI7, a 134-kilobase island with genes for Vi exopolysaccharide and other functions, has been deleted.
Journal of bacteriology 2004;186(10):3214-23.
2004: Helene Andrews-Polymenis; Wolfgang Rabsch; Steffen Porwollik; Michael McClelland; Carlos Rosetti; Garry Adams; Andreas J Baumler
Host restriction of Salmonella enterica serotype Typhimurium pigeon isolates does not correlate with loss of discrete genes.
Journal of bacteriology 2004;186(9):2619-28.
2004: Steffen Porwollik; Rita Mei-Yi Wong; R Allen Helm; Kelly K Edwards; Michael J Calcutt; Abraham Eisenstark; Michael McClelland
DNA amplification and rearrangements in archival Salmonella enterica serovar Typhimurium LT2 cultures.
Journal of bacteriology 2004;186(6):1678-82.
2003: Juan Alvarez; Steffen Porwollik; Idoia Laconcha; Vassilis Gisakis; Ana Belén Vivanco; Iratxe Gonzalez; Susana Echenagusia; Nieves Zabala; Felisa Blackmer; Michael McClelland; Aitor Rementeria; Javier Garaizar
Detection of a Salmonella enterica serovar California strain spreading in spanish feed mills and genetic characterization with DNA microarrays.
Applied and environmental microbiology 2003;69(12):7531-4.
2003: Steffen Porwollik; Michael McClelland
Lateral gene transfer in Salmonella.
Microbes and infection / Institut Pasteur 2003;5(11):977-89.
2003: E Fidelma Boyd; Steffen Porwollik; Felisa Blackmer; Michael McClelland
Differences in gene content among Salmonella enterica serovar typhi isolates.
Journal of clinical microbiology 2003;41(8):3823-8.
2003: Sara D. Lawhon; Jonathan G Frye; Mitsu Suyemoto; Steffen Porwollik; Michael McClelland; Craig Altier
Global regulation by CsrA in Salmonella typhimurium.
Molecular microbiology 2003;48(6):1633-45.
2003: Steffen Porwollik; Jonathan G Frye; Liliana Florea; Felisa Blackmer; Michael McClelland
A non-redundant microarray of genes for two related bacteria.
Nucleic acids research 2003;31(7):1869-76.
2003: Steven Ringquist; Gaelle Rondeau; Rosa-Ana Risques; Takuya Higashiyama; Yi-Peng Wang; Steffen Porwollik; David Boyle; Michael McClelland; John Welsh
Microarray analysis using RNA arbitrarily primed PCR.
Methods in molecular biology (Clifton, N.J.) 2003;226():245-54.
2002: James W Wilson; C Mark Ott; Rajee Ramamurthy; Steffen Porwollik; Michael McClelland; Duane L Pierson; Cheryl Nickerson
Low-Shear modeled microgravity alters the Salmonella enterica serovar typhimurium stress response in an RpoS-independent manner.
Applied and environmental microbiology 2002;68(11):5408-16.
2002: James W Wilson; Rajee Ramamurthy; Steffen Porwollik; Michael McClelland; Timothy Hammond; Pat Allen; C Mark Ott; Duane L Pierson; Cheryl Nickerson
Microarray analysis identifies Salmonella genes belonging to the low-shear modeled microgravity regulon.
Proceedings of the National Academy of Sciences of the United States of America 2002;99(21):13807-12.
2002: Steffen Porwollik; Rita Mei-Yi Wong; Michael McClelland
Evolutionary genomics of Salmonella: gene acquisitions revealed by microarray analysis.
Proceedings of the National Academy of Sciences of the United States of America 2002;99(13):8956-61.
2002: Javier Garaizar; Steffen Porwollik; Aurora Echeita; Aitor Rementeria; Silvia Herrera; Rita Mei-Yi Wong; Jonathan G Frye; Miguel A Usera; Michael McClelland
DNA microarray-based typing of an atypical monophasic Salmonella enterica serovar.
Journal of clinical microbiology 2002;40(6):2074-8.
2001: Steffen Porwollik; Rita Mei-Yi Wong; S H Sims; Roel M Schaaper; David M DeMarini; Michael McClelland
The DeltauvrB mutations in the Ames strains of Salmonella span 15 to 119 genes.
Mutation research 2001;483(1-2):1-11.
2001: Michael McClelland; K E Sanderson; John Spieth; Sandra W Clifton; P Latreille; L Courtney; Steffen Porwollik; J Ali; Mike Dante; F Du; S Hou; D Layman; S Leonard; C Nguyen; K Scott; A Holmes; N Grewal; E Mulvaney; E Ryan; H Sun; Liliana Florea; Webb Miller; T Stoneking; M Nhan; Robert H Waterston; Richard K Wilson
Complete genome sequence of Salmonella enterica serovar Typhimurium LT2.
Nature 2001;413(6858):852-6.