Research Topics
| WILLIAM CRAMERSummaryAffiliation: Purdue University Country: USA Publications
Research Grants
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Publications
Intraprotein transfer of the quinone analogue inhibitor 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone in the cytochrome b6f complexJiusheng Yan
Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
Proc Natl Acad Sci U S A 103:69-74. 2006..Together with the necessary passage of quinone/quinol through the small Q(p) portal in the complex, it is seen that transmembrane traffic of quinone-like molecules through the core of cytochrome bc complexes can be labyrinthine...
Characterization and crystallization of the lumen side domain of the chloroplast Rieske iron-sulfur proteinH Zhang
Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907 1392, USA
J Biol Chem 271:31360-6. 1996..1 A, b = 31.9 A, c = 35.8 A, alpha = 95.6 degrees, beta = 107.1 degrees, gamma = 117.3 degrees...- Evolution of photosynthesis: time-independent structure of the cytochrome b6f complexWilliam A Cramer
Department of Biological Sciences, Lilly Hall of Life Sciences, 915 West State Street, Purdue University, West Lafayette, Indiana 47907 2054, USA
Biochemistry 43:5921-9. 2004..However, in the cyanobacterial complex, TDS is in an orientation that is the opposite of its position in the algal structure and bc(1) complexes, so its headgroup in the M. laminosus structure is 20 A from the Fe(2)S(2) cluster... - Structure of the cytochrome b6f complex of oxygenic photosynthesis: tuning the cavityGenji Kurisu
Department of Biological Sciences, 915 West State Street, Purdue University, West Lafayette, IN 47907 2054, USA
Science 302:1009-14. 2003..The motion of the Rieske iron-sulfur protein extrinsic domain, essential for electron transfer, must also be different in the b6f complex... - Structure of the complex of the colicin E2 R-domain and its BtuB receptor. The outer membrane colicin transloconOnkar Sharma
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, West Lafayette, Indiana 47907, USA
J Biol Chem 282:23163-70. 2007..Arg(452) at the R/C-domain interface in colicin E2 was found have an essential role at a putative site of protease cleavage, which would liberate the C-terminal activity domain for passage through the outer membrane translocon... 
Primary events in the colicin translocon: FRET analysis of colicin unfolding initiated by binding to BtuB and OmpFStanislav D Zakharov
Department of Biological Sciences and Purdue Cancer Center, Purdue University, West Lafayette, Indiana 47907 2054, USA
Biochemistry 47:12802-9. 2008..The R-domain Arg399 is responsible for electrostatic interaction with BtuB. It is concluded that free energy for colicin unfolding is provided by binding of the R- domain to BtuB and binding/insertion of the T-domain to/into OmpF...- The single chlorophyll a molecule in the cytochrome b6f complex: unusual optical properties protect the complex against singlet oxygenNaranbaatar Dashdorj
Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA
Biophys J 88:4178-87. 2005..It is also reported that the Chl a molecule in the cytochrome b(6)f complex does not change orientation in its excited state... - Colicin crystal structures: pathways and mechanisms for colicin insertion into membranesStanislav D Zakharov
Department of Biological Sciences, Purdue University, West Lafayette, IN 47907-1392, USA
Biochim Biophys Acta 1565:333-46. 2002..Helix elongation contradicts suggestions that the colicin import involves a molten globule intermediate. The nature of the open-channel structure is discussed... - Minimum length requirement of the flexible N-terminal translocation subdomain of colicin E3Onkar Sharma
Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
J Bacteriol 189:363-8. 2007.... - Crystal structures of the OmpF porin: function in a colicin transloconEiki Yamashita
Department of Biological Sciences, Purdue University, West Lafayette, IN 47907 1392, USA
EMBO J 27:2171-80. 2008..Involvement of OmpF in colicin passage through the OM was further documented by immuno-extraction of an OM complex, the colicin translocon, consisting of colicin E3, BtuB and OmpF... - The structure of BtuB with bound colicin E3 R-domain implies a transloconGenji Kurisu
Department of Biological Sciences, Purdue University, Lilly Hall of Life Sciences, 915 W State St, West Lafayette, Indiana 47907 1392, USA
Nat Struct Biol 10:948-54. 2003..The translocator was concluded to be OmpF from the occlusion of OmpF channels by colicin E3... - The colicin E3 outer membrane translocon: immunity protein release allows interaction of the cytotoxic domain with OmpF porinStanislav D Zakharov
Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA
Biochemistry 45:10199-207. 2006.... - Purification and crystallization of the cytochrome b6f complex in oxygenic photosynthesisHuamin Zhang
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, West Lafayette, IN, USA
Methods Mol Biol 274:67-78. 2004..2 mm) crystals suitable for x-ray diffraction analysis and structure determination, which diffract with good statistics to 3.0 A... - A defined protein-detergent-lipid complex for crystallization of integral membrane proteins: The cytochrome b6f complex of oxygenic photosynthesisHuamin Zhang
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, West Lafayette, IN 47907 2054, USA
Proc Natl Acad Sci U S A 100:5160-3. 2003.... - Functional insensitivity of the cytochrome b6f complex to structure changes in the hinge region of the Rieske iron-sulfur proteinJiusheng Yan
Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907-2054, USA
J Biol Chem 278:20925-33. 2003..This implies that either the barriers to motion or the amplitude of ISP motion required for function is smaller than in the bc1 complex... - Structure-Function, Stability, and Chemical Modification of the Cyanobacterial Cytochrome b6f Complex from Nostoc sp. PCC 7120Danas Baniulis
Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA
J Biol Chem 284:9861-9. 2009..The high spin electronic character of the unique heme c(n) is similar to that previously found in the b(6)f complex from other sources... - Helical alpha-synuclein forms highly conductive ion channelsStanislav D Zakharov
Departments of Biological Sciences, Purdue University, West Lafayette, Indiana 47907 2054, USA
Biochemistry 46:14369-79. 2007.... - Consequences of the structure of the cytochrome b6f complex for its charge transfer pathwaysWilliam A Cramer
Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
Biochim Biophys Acta 1757:339-45. 2006..Thus, either regulation is required at the level of the redox state of the hemes that would allow them to be shared by the two pathways, and/or the two different pathways are segregated in the membrane... - Transmembrane traffic in the cytochrome b6f complexWilliam A Cramer
Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907 2054, USA
Annu Rev Biochem 75:769-90. 2006..It is hypothesized that this heme, exposed to the cavity and a neighboring plastoquinone and close to the positive surface potential of the complex, can function in cyclic electron transport via anionic ferredoxin... - Problems in obtaining diffraction-quality crystals of hetero-oligomeric integral membrane proteinsHuamin Zhang
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, West Lafayette, IN 47907 2054, USA
J Struct Funct Genomics 6:219-23. 2005..In the case of the complex formed by the cobalamin and colicin receptor, BtuB, and the receptor binding domain of colicin E3, the latter served as a ligand for protein-protein contacts that facilitated crystallization... - Ultrafast optical pump-probe studies of the cytochrome b(6)f complex in solution and crystalline statesNaranbaatar Dashdorj
Department of Physics and Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA
J Phys Chem B 111:14405-10. 2007..This supports an earlier hypothesis that the short excited state lifetime of Chl a is critical for the function of the b6f complex... - Characterization of the high-spin heme x in the cytochrome b6f complex of oxygenic photosynthesisHuamin Zhang
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, West Lafayette, Indiana 47907 2054, USA
Biochemistry 43:16329-36. 2004..In addition to a possible function in photosystem I-linked cyclic electron transport, the five-coordinate state implies that there is at least one more function of heme x that is related to axial binding of a physiological ligand... - Tuning the membrane surface potential for efficient toxin importStanislav D Zakharov
Department of Biological Sciences, Purdue University, West Lafayette, IN 47907 1392, USA
Proc Natl Acad Sci U S A 99:8654-9. 2002..This suggests that one reason the membrane surface potential is tuned in vivo is to facilitate protein import... - On the mechanism and pathway of colicin import across the E. Coli outer membraneStanislav D Zakharov
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, West Lafayette, IN 47907 1392, USA
Front Biosci 9:1311-7. 2004.... - Cytochrome bc complexes: a common core of structure and function surrounded by diversity in the outlying provincesJanet L Smith
Department of Biological Sciences, 915 West State Street, Purdue University, West Lafayette, Indiana 47907 2054, USA
Curr Opin Struct Biol 14:432-9. 2004.... - Colicin occlusion of OmpF and TolC channels: outer membrane translocons for colicin importStanislav D Zakharov
Department of Biological Sciences, Purdue University, West Lafayette, Indiana, USA
Biophys J 87:3901-11. 2004..These data are considered in the context of a two-receptor translocon model for colicin entry into cells... - Molecular control of a bimodal distribution of quinone-analogue inhibitor binding sites in the cytochrome b(6)f complexJiusheng Yan
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, 915 W State Street, West Lafayette, IN 47907 2054, USA
J Mol Biol 344:481-93. 2004.... - On the role of lipid in colicin pore formationStanislav D Zakharov
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, West Lafayette, IN 47907-1392, USA
Biochim Biophys Acta 1666:239-49. 2004..The resulting pore structure may consist of somewhat short, ca. 16 residues, trans-membrane helices, in a locally thinned membrane, together with surface elements of inverted phase lipid micelles... - Structure of the cytochrome b6f complex: new prosthetic groups, Q-space, and the 'hors d'oeuvres hypothesis' for assembly of the complexWilliam A Cramer
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, 915 West State Street, West Lafayette, IN 47907-2054, USA
Photosynth Res 85:133-43. 2005.... - Electron transfer from the Rieske iron-sulfur protein (ISP) to cytochrome f in vitro. Is a guided trajectory of the ISP necessary for competent docking?Glenda M Soriano
Department of Biological Sciences and Program in Biochemistry Molecular Biology, Purdue University, West Lafayette, Indiana 47907 1392, USA
J Biol Chem 277:41865-71. 2002..The requirement of a specific electrically neutral docking configuration for ISP electron transfer is consistent with structure data for the related cytochrome bc(1) complex... - On the structural role of the aromatic residue environment of the chlorophyll a in the cytochrome b6f complexJiusheng Yan
Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA
Biochemistry 47:3654-61. 2008.... - Fe vibrational spectroscopy of myoglobin and cytochrome fKristl L Adams
Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA
J Phys Chem B 110:530-6. 2006..The protein's contribution to Fe motion is dominant at low frequencies, where coupling to the backbone tightly constrains Fe displacements in cytochrome f, in contrast to enhanced heme flexibility in myoglobin... - Genome-wide screens: novel mechanisms in colicin import and cytotoxicityOnkar Sharma
Department of Biological Sciences, Lilly Hall of Life Sciences, Purdue University, West Lafayette, IN 47907, USA
Mol Microbiol 73:571-85. 2009.... - Heme-heme interactions in the cytochrome b6f complex: EPR spectroscopy and correlation with structureAnna I Zatsman
Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
J Am Chem Soc 128:14246-7. 2006..The electronic coupling implies that the heme bn/cn pair could function as a unit to facilitate 2-electron reduction of plastoquionone without generation of an energetically unfavorable semiquinone intermediate... - [Structure and function of the cytochrome b6f complex of oxygenic photosynthesis]Genji Kurisu
Tanpakushitsu Kakusan Koso 49:1265-73. 2004 - Effect of lipids with different spontaneous curvature on the channel activity of colicin E1: evidence in favor of a toroidal poreAlexander A Sobko
A.N. Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow 119992, Russia
FEBS Lett 576:205-10. 2004..It is inferred that the toroidal pore model previously validated for small antimicrobial peptides is applicable to colicin E1, a large protein that contains ten alpha-helices in its pore-forming domain... - Sequencing covalent modifications of membrane proteinsJulian P Whitelegge
The Pasarow Mass Spectrometry Laboratory, and the Jane and Terry Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California, 405 Hilgard Avenue, Los Angeles, CA 90095, USA
J Exp Bot 57:1515-22. 2006.... - Lipid dependence of the channel properties of a colicin E1-lipid toroidal poreAlexander A Sobko
A. N. Belozersky Institute of Physico-Chemical Biology, Moscow State University, 119992 Moscow, Russia
J Biol Chem 281:14408-16. 2006.... - Full subunit coverage liquid chromatography electrospray ionization mass spectrometry (LCMS+) of an oligomeric membrane protein: cytochrome b(6)f complex from spinach and the cyanobacterium Mastigocladus laminosusJulian P Whitelegge
The Pasarow Mass Spectrometry Laboratory, Department of Psychiatry, Neuropsychiatric Institute, University of California, Los Angeles, California 90095, USA
Mol Cell Proteomics 1:816-27. 2002..Full subunit coverage of an oligomeric intrinsic membrane protein complex by LCMS+ presents a new facet to intact mass proteomics... - [Molecular mechanism of protein import through receptor complexes: implication of the complex structure of outer membrane receptor and colicin E3]Kurisu Genji
Tanpakushitsu Kakusan Koso 50:356-61. 2005 - Membrane protein crystallization in lipidic mesophases with tailored bilayersLisa V Misquitta
Department of Chemistry, The Ohio State University, Columbus, OH 43210, USA
Structure 12:2113-24. 2004..The latter is the first beta barrel protein to be crystallized by the in meso method. Protein stability in the short-chain lipid and how this relates to crystallogenesis are discussed... - An anomalous distance dependence of intraprotein chlorophyll-carotenoid triplet energy transferHanyoup Kim
Biophys J 89:L28-30. 2005
Research Grants
- Problems in Membrane Protein Crystallography: Hetero-Oligomeric Cytochrome b6fWILLIAM CRAMER; Fiscal Year: 2009..Via the membrane, the set of energy-transducing proteins determines the level of energy and its regulation in the human cell. ..
- STRUCTURE/FUNCTION OF COLICIN E1/RECEPTOR/IMM PROTEINWILLIAM CRAMER; Fiscal Year: 2002..A weak interaction precludes effective binding. One that is too strong prevents insertion into the bilayer. ..
- Structure-Function of Hetero-oligomeric Integral Membrane ProteinsWILLIAM CRAMER; Fiscal Year: 2007....
- Receptor-mediated Colicin ImportWILLIAM CRAMER; Fiscal Year: 2007..2) The pathway of membrane insertion of the E1 channel domain, relative to the time course of other unfolding events, will be examined by time-resolved FRET using a large set of single Trp mutants. ..
- Structural Analysis of Integral Membrane ProteinsWILLIAM CRAMER; Fiscal Year: 2006..It is proposed to directly measure the kinetics of motion of the ISP soluble domain triggered by electron transfer. ..
- STRUCTURE/FUNCTION OF THE CYTOCHROME B6F COMPLEXWILLIAM CRAMER; Fiscal Year: 2003..Ruthenated cytf will also be used to investigate intraprotein protonation- deprotonation at specific carboxylates, associated with coupled electron and proton transfer. ..
- THE MECHANISM OF ACTION OF COLICINWILLIAM CRAMER; Fiscal Year: 1980..The latter studies will be complemented by using a small 20 k dalton tryptic fragment of colicin E1 which is active in the synthetic lipid vesicles. ..
- STRUCTURE/FUNCTION OF PHOTOSYNTHETIC CYTOCHROME COMPLEXWILLIAM CRAMER; Fiscal Year: 1993....
- STRUCTURE & FUNCTION OF THE COLICIN E1 CHANNELWILLIAM CRAMER; Fiscal Year: 1993....