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Antony Crofts

Research Profile

Chemicals & Drugs

Living Beings

Rhodobacter sphaeroides

Phenomena

Physiology

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Genes & Molecular Sequences

Amino Acid Sequences

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Electron Spin Resonance Spectroscopy

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Publications

TOP 3
Doreen Victoria; Rodney Burton; Antony R Crofts
Role of the -PEWY-glutamate in catalysis at the Q(o)-site of the Cyt bc(1) complex.
Sangjin Hong; Doreen Victoria; Antony R Crofts
Inter-monomer electron transfer is too slow to compete with monomeric turnover in bc(1) complex.
Rimma I Samoilova; Antony R Crofts; Sergei Dikanov
Reaction of superoxide radical with quinone molecules.

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All Publications

2013: Doreen Victoria; Rodney Burton; Antony R Crofts
Role of the -PEWY-glutamate in catalysis at the Q(o)-site of the Cyt bc(1) complex.
Biochimica et biophysica acta 2013;1827(3):365-86.
2012: Sangjin Hong; Doreen Victoria; Antony R Crofts
Inter-monomer electron transfer is too slow to compete with monomeric turnover in bc(1) complex.
Biochimica et biophysica acta 2012;1817(7):1053-62.
2011: Rimma I Samoilova; Antony R Crofts; Sergei Dikanov
Reaction of superoxide radical with quinone molecules.
The journal of physical chemistry. A 2011;115(42):11589-93.
2010: Sangmoon Lhee; Derrick R J Kolling; Satish K Nair; Sergei Dikanov; Antony R Crofts
Modifications of protein environment of the [2Fe-2S] cluster of the bc1 complex: effects on the biophysical properties of the rieske iron-sulfur protein and on the kinetics of the complex.
The Journal of biological chemistry 2010;285(12):9233-48.
2009: Sergei Dikanov; Rimma I Samoilova; Reinhard Kappl; Antony R Crofts; Jürgen Hüttermann
The reduced [2Fe-2S] clusters in adrenodoxin and Arthrospira platensis ferredoxin share spin density with protein nitrogens, probed using 2D ESEEM.
Physical chemistry chemical physics : PCCP 2009;11(31):6807-19.
2009: Derrick R J Kolling; Rimma I Samoilova; Alexander A Shubin; Antony R Crofts; Sergei Dikanov
Proton environment of reduced Rieske iron-sulfur cluster probed by two-dimensional ESEEM spectroscopy.
The journal of physical chemistry. A 2009;113(4):653-67.
2008: Stuart Rose; Jun Minagawa; Manfredo Seufferheld; Sean Padden; Bengt Svensson; Derrick R J Kolling; Antony R Crofts
D1-arginine257 mutants (R257E, K, and Q) of Chlamydomonas reinhardtii have a lowered QB redox potential: analysis of thermoluminescence and fluorescence measurements.
Photosynthesis research 2008;98(1-3):449-68.
2008: Antony R Crofts; J Todd Holland; Doreen Victoria; Derrick R J Kolling; Sergei Dikanov; Ryan Gilbreth; Sangmoon Lhee; R Kuras; Mariana Guergova Kuras
The Q-cycle reviewed: How well does a monomeric mechanism of the bc(1) complex account for the function of a dimeric complex?
Biochimica et biophysica acta 2008;1777(7-8):1001-19.
2007: Antony R Crofts; Stuart Rose
Marcus treatment of endergonic reactions: a commentary.
Biochimica et biophysica acta 2007;1767(10):1228-32.
2007: Sergei Dikanov; J Todd Holland; Burkhard Endeward; Derrick R J Kolling; Rimma I Samoilova; Thomas F Prisner; Antony R Crofts
Hydrogen bonds between nitrogen donors and the semiquinone in the Qi-site of the bc1 complex.
The Journal of biological chemistry 2007;282(35):25831-41.
2007: Derrick J Kolling; Joseph S. Brunzelle; Sangmoon Lhee; Antony R Crofts; Satish K Nair
Atomic resolution structures of rieske iron-sulfur protein: role of hydrogen bonds in tuning the redox potential of iron-sulfur clusters.
Structure (London, England : 1993) 2007;15(1):29-38.
2006: Sergei Dikanov; Derrick R J Kolling; Burkhard Endeward; Rimma I Samoilova; Thomas F Prisner; Satish K Nair; Antony R Crofts
Identification of hydrogen bonds to the Rieske cluster through the weakly coupled nitrogens detected by electron spin echo envelope modulation spectroscopy.
The Journal of biological chemistry 2006;281(37):27416-25.
2006: Toshio Iwasaki; Asako Kounosu; Derrick R J Kolling; Sangmoon Lhee; Antony R Crofts; Sergei Dikanov; Takuro Uchiyama; Takashi Kumasaka; Hiroyuki Ishikawa; Miwa Kono; Takeo Imai; Akio Urushiyama
Resonance Raman characterization of archaeal and bacterial Rieske protein variants with modified hydrogen bond network around the [2Fe-2S] center.
Protein science : a publication of the Protein Society 2006;15(8):2019-24.
2006: Antony R Crofts; Sangmoon Lhee; Stephanie B Crofts; Jerry Cheng; Stuart Rose
Proton pumping in the bc1 complex: a new gating mechanism that prevents short circuits.
Biochimica et biophysica acta 2006;1757(8):1019-34.
2006: Vladimir P Shinkarev; Antony R Crofts; Colin A Wraight
In situ kinetics of cytochromes c1 and c2.
Biochemistry 2006;45(25):7897-903.
2006: Vladimir P Shinkarev; Antony R Crofts; Colin A Wraight
Spectral and kinetic resolution of the bc1 complex components in situ: a simple and robust alternative to the traditional difference wavelength approach.
Biochimica et biophysica acta 2006;1757(4):273-83.
2006: Vladimir P Shinkarev; Antony R Crofts; Colin A Wraight
Spectral analysis of the bc(1) complex components in situ: beyond the traditional difference approach.
Biochimica et biophysica acta 2006;1757(1):67-77.
2006: Jennie Y Tang; Raymond E Zielinski; Arthur R Zangerl; Antony R Crofts; May R Berenbaum; Evan H DeLucia
The differential effects of herbivory by first and fourth instars of Trichoplusia ni (Lepidoptera: Noctuidae) on photosynthesis in Arabidopsis thaliana.
Journal of experimental botany 2006;57(3):527-36.
2004: Toshio Iwasaki; Asako Kounosu; Derrick R J Kolling; Antony R Crofts; Sergei Dikanov; Akihisa Jin; Takeo Imai; Akio Urushiyama
Characterization of the pH-dependent resonance Raman transitions of archaeal and bacterial Rieske [2Fe-2S] proteins.
Journal of the American Chemical Society 2004;126(15):4788-9.
2004: Sergei Dikanov; Rimma I Samoilova; Derrick R J Kolling; J Todd Holland; Antony R Crofts
Hydrogen bonds involved in binding the Qi-site semiquinone in the bc1 complex, identified through deuterium exchange using pulsed EPR.
The Journal of biological chemistry 2004;279(16):15814-23.
2004: Antony R Crofts
Proton-coupled electron transfer at the Qo-site of the bc1 complex controls the rate of ubihydroquinone oxidation.
Biochimica et biophysica acta 2004;1655(1-3):77-92.
2004: Antony R Crofts
The cytochrome bc1 complex: function in the context of structure.
Annual review of physiology 2004;66():689-733.
2003: Qin Wang; Antony R Crofts; Graciela W Padua
Protein-lipid interactions in zein films investigated by surface plasmon resonance.
Journal of agricultural and food chemistry 2003;51(25):7439-44.
2003: Yanbing Zu; Manon Couture; Derrick R J Kolling; Antony R Crofts; Lindsay D Eltis; James A Fee; Judy Hirst
Reduction potentials of Rieske clusters: importance of the coupling between oxidation state and histidine protonation state.
Biochemistry 2003;42(42):12400-8.
2003: Derrick R J Kolling; Rimma I Samoilova; J Todd Holland; Edward A Berry; Sergei Dikanov; Antony R Crofts
Exploration of ligands to the Qi site semiquinone in the bc1 complex using high-resolution EPR.
The Journal of biological chemistry 2003;278(41):39747-54.
2003: Antony R Crofts; Vladimir P Shinkarev; Derrick R J Kolling; Sangjin Hong
The modified Q-cycle explains the apparent mismatch between the kinetics of reduction of cytochromes c1 and bH in the bc1 complex.
The Journal of biological chemistry 2003;278(38):36191-201.
2002: Vladimir P Shinkarev; Derrick R J Kolling; Tim J Miller; Antony R Crofts
Modulation of the midpoint potential of the [2Fe-2S] Rieske iron sulfur center by Qo occupants in the bc1 complex.
Biochemistry 2002;41(48):14372-82.
2002: Antony R Crofts; Vladimir P Shinkarev; Sergei Dikanov; Rimma I Samoilova; Derrick R J Kolling
Interactions of quinone with the iron-sulfur protein of the bc(1) complex: is the mechanism spring-loaded?
Biochimica et biophysica acta 2002;1555(1-3):48-53.
2002: Florian Muller; Antony R Crofts; David M Kramer
Multiple Q-cycle bypass reactions at the Qo site of the cytochrome bc1 complex.
Biochemistry 2002;41(25):7866-74.
2002: Rimma I Samoilova; Derrick R J Kolling; Taketoshi Uzawa; Toshio Iwasaki; Antony R Crofts; Sergei Dikanov
The interaction of the Rieske iron-sulfur protein with occupants of the Qo-site of the bc1 complex, probed by electron spin echo envelope modulation.
The Journal of biological chemistry 2002;277(7):4605-8.
2002: Arthur R Zangerl; Jason G Hamilton; T J Miller; Antony R Crofts; K Oxborough; May R Berenbaum; E H de Lucia
Impact of folivory on photosynthesis is greater than the sum of its holes.
Proceedings of the National Academy of Sciences of the United States of America 2002;99(2):1088-91.
2001: Vladimir P Shinkarev; Antony R Crofts; Colin A Wraight
The electric field generated by photosynthetic reaction center induces rapid reversed electron transfer in the bc1 complex.
Biochemistry 2001;40(42):12584-90.
2001: Stuart V Ruffle; J Wang; H G Johnston; Terry L Gustafson; R S Hutchison; J Minagawa; Antony R Crofts; Richard T Sayre
Photosystem II peripheral accessory chlorophyll mutants in Chlamydomonas reinhardtii. Biochemical characterization and sensitivity to photo-inhibition.
Plant physiology 2001;127(2):633-44.
2000: Vladimir P Shinkarev; NB Ugulava; Antony R Crofts; Colin A Wraight
DCCD inhibits the reactions of the iron-sulfur protein in Rhodobacter sphaeroides chromatophores.
Biochemistry 2000;39(51):16206-12.
2000: Vladimir P Shinkarev; NB Ugulava; Eiji Takahashi; Antony R Crofts; Colin A Wraight
Aspartate-187 of cytochrome b is not needed for DCCD inhibition of ubiquinol: cytochrome c oxidoreductase in Rhodobacter sphaeroides chromatophores.
Biochemistry 2000;39(46):14232-7.
2000: Antony R Crofts; M Guergova-Kuras; R Kuras; NB Ugulava; J Li; Sangjin Hong
Proton-coupled electron transfer at the Q(o) site: what type of mechanism can account for the high activation barrier?
Biochimica et biophysica acta 2000;1459(2-3):456-66.
2000: M Guergova-Kuras; R Kuras; NB Ugulava; I Hadad; Antony R Crofts
Specific mutagenesis of the rieske iron-sulfur protein in Rhodobacter sphaeroides shows that both the thermodynamic gradient and the pK of the oxidized form determine the rate of quinol oxidation by the bc(1) complex.
Biochemistry 2000;39(25):7436-44.
2000: Edward A Berry; M Guergova-Kuras; Li-Shar Huang; Antony R Crofts
Structure and function of cytochrome bc complexes.
Annual review of biochemistry 2000;69():1005-75.
1999: Antony R Crofts; Sangjin Hong; Z Zhang; Edward A Berry
Physicochemical aspects of the movement of the rieske iron sulfur protein during quinol oxidation by the bc(1) complex from mitochondria and photosynthetic bacteria.
Biochemistry 1999;38(48):15827-39.
1999: Antony R Crofts; Blanca Barquera; Robert B Gennis; R Kuras; M Guergova-Kuras; Edward A Berry
Mechanism of ubiquinol oxidation by the bc(1) complex: different domains of the quinol binding pocket and their role in the mechanism and binding of inhibitors.
Biochemistry 1999;38(48):15807-26.
1999: Antony R Crofts; M Guergova-Kuras; L Huang; R Kuras; Z Zhang; Edward A Berry
Mechanism of ubiquinol oxidation by the bc(1) complex: role of the iron sulfur protein and its mobility.
Biochemistry 1999;38(48):15791-806.
1999: Sangjin Hong; NB Ugulava; M Guergova-Kuras; Antony R Crofts
The energy landscape for ubihydroquinone oxidation at the Q(o) site of the bc(1) complex in Rhodobacter sphaeroides.
The Journal of biological chemistry 1999;274(48):33931-44.
1999: S Izrailev; Antony R Crofts; Edward A Berry; Klaus Schulten
Steered molecular dynamics simulation of the Rieske subunit motion in the cytochrome bc(1) complex.
Biophysical journal 1999;77(4):1753-68.
1999: Antony R Crofts; Sangjin Hong; NB Ugulava; Blanca Barquera; Robert B Gennis; M Guergova-Kuras; Edward A Berry
Pathways for proton release during ubihydroquinone oxidation by the bc(1) complex.
Proceedings of the National Academy of Sciences of the United States of America 1999;96(18):10021-6.
1999: M Guergova-Kuras; R Salcedo-Hernandez; G Bechmann; R Kuras; Robert B Gennis; Antony R Crofts
Expression and one-step purification of a fully active polyhistidine-tagged cytochrome bc1 complex from Rhodobacter sphaeroides.
Protein expression and purification 1999;15(3):370-80.
1998: NB Ugulava; Antony R Crofts
CD-monitored redox titration of the Rieske Fe-S protein of Rhodobacter sphaeroides: pH dependence of the midpoint potential in isolated bc1 complex and in membranes.
FEBS letters 1998;440(3):409-13.
1998: R Kuras; M Guergova-Kuras; Antony R Crofts
Steps toward constructing a cytochrome b6 f complex in the purple bacterium Rhodobacter sphaeroides: an example of the structural plasticity of a membrane cytochrome.
Biochemistry 1998;37(46):16280-8.
1998: Antony R Crofts; Edward A Berry
Structure and function of the cytochrome bc1 complex of mitochondria and photosynthetic bacteria.
Current opinion in structural biology 1998;8(4):501-9.
1998: J Xiong; J Minagawa; Antony R Crofts
Loss of inhibition by formate in newly constructed photosystem II D1 mutants, D1-R257E and D1-R257M, of Chlamydomonas reinhardtii.
Biochimica et biophysica acta 1998;1365(3):473-91.
1998: Z Zhang; L Huang; V M Shulmeister; Young-In Chi; Kyeong Kyu Kim; Li-Wei Hung; Antony R Crofts; Edward A Berry; Sung-Huo S H Kim
Electron transfer by domain movement in cytochrome bc1.
Nature 1998;392(6677):677-84.
1997: V C Witthuhn; J Gao; Sangjin Hong; S Halls; M A Rott; Colin A Wraight; Antony R Crofts; Timothy J Donohue
Reactions of isocytochrome c2 in the photosynthetic electron transfer chain of Rhodobacter sphaeroides.
Biochemistry 1997;36(4):903-11.
1996: J Minagawa; David M Kramer; A Kanazawa; Antony R Crofts
Donor-side photoinhibition in photosystem II from Chlamydomonas reinhardtii upon mutation of tyrosine-Z in the D1 polypeptide to phenylalanine.
FEBS letters 1996;389(2):199-202.
1994: Beth Hacker; Blanca Barquera; Robert B Gennis; Antony R Crofts
Site-directed mutagenesis of arginine-114 and tryptophan-129 in the cytochrome b subunit of the bc1 complex of Rhodobacter sphaeroides: two highly conserved residues predicted to be near the cytoplasmic surface of putative transmembrane helices B and C.
Biochemistry 1994;33(44):13022-31.
1993: Steven R Van Doren; Robert B Gennis; Blanca Barquera; Antony R Crofts
Site-directed mutations of conserved residues of the Rieske iron-sulfur subunit of the cytochrome bc1 complex of Rhodobacter sphaeroides blocking or impairing quinol oxidation.
Biochemistry 1993;32(32):8083-91.
1993: Robert B Gennis; Blanca Barquera; Beth Hacker; Steven R Van Doren; S Arnaud; Antony R Crofts; E Davidson; K A Gray; Fevzi Daldal
The bc1 complexes of Rhodobacter sphaeroides and Rhodobacter capsulatus.
Journal of bioenergetics and biomembranes 1993;25(3):195-209.
1993: Beth Hacker; Blanca Barquera; Antony R Crofts; Robert B Gennis
Characterization of mutations in the cytochrome b subunit of the bc1 complex of Rhodobacter sphaeroides that affect the quinone reductase site (Qc).
Biochemistry 1993;32(16):4403-10.
1993: Steven R Van Doren; C H Yun; Antony R Crofts; Robert B Gennis
Assembly of the Rieske iron-sulfur subunit of the cytochrome bc1 complex in the Escherichia coli and Rhodobacter sphaeroides membranes independent of the cytochrome b and c1 subunits.
Biochemistry 1993;32(2):628-36.
1992: Antony R Crofts; Beth Hacker; Blanca Barquera; C H Yun; Robert B Gennis
Structure and function of the bc-complex of Rhodobacter sphaeroides.
Biochimica et biophysica acta 1992;1101(2):162-5.
1992: C H Yun; Z Wang; Antony R Crofts; Robert B Gennis
Examination of the functional roles of 5 highly conserved residues in the cytochrome b subunit of the bc1 complex of Rhodobacter sphaeroides.
The Journal of biological chemistry 1992;267(9):5901-9.
1991: K Konishi; Steven R Van Doren; David M Kramer; Antony R Crofts; Robert B Gennis
Preparation and characterization of the water-soluble heme-binding domain of cytochrome c1 from the Rhodobacter sphaeroides bc1 complex.
The Journal of biological chemistry 1991;266(22):14270-6.
1991: J Fernandez-Valesco; Antony R Crofts
Complexes or super complexes: inhibitor titrations show that electron transfer in chromatophores from Rhodobacter sphaeroides involves a dimeric UQH2:cytochrome c2 oxidoreductase, and is delocalized.
Biochemical Society transactions 1991;19(3):588-93.
1991: C H Yun; Steven R Van Doren; Antony R Crofts; Robert B Gennis
The use of gene fusions to examine the membrane topology of the L-subunit of the photosynthetic reaction center and of the cytochrome b subunit of the bc1 complex from Rhodobacter sphaeroides.
The Journal of biological chemistry 1991;266(17):10967-73.
1990: C H Yun; R Beci; Antony R Crofts; S Kaplan; Robert B Gennis
Cloning and DNA sequencing of the fbc operon encoding the cytochrome bc1 complex from Rhodobacter sphaeroides. Characterization of fbc deletion mutants and complementation by a site-specific mutational variant.
European journal of biochemistry / FEBS 1990;194(2):399-411.
1990: K M Andrews; Antony R Crofts; Robert B Gennis
Large-scale purification and characterization of a highly active four-subunit cytochrome bc1 complex from Rhodobacter sphaeroides.
Biochemistry 1990;29(11):2645-51.