23RD EASTERN REGIONAL PHOTOSYNTHESIS CONFERENCE
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submitted abstracts

The following abstracts have been submitted and will be presented at the 23rd Eastern Regional Photosynthesis Conference in April 2006. If you would like to submit an abstract, please use our submission form. The list of abstracts will continue to be updated until the conference begins. Please note that some non-standard characters may not appear correctly in the abstracts when viewed on this site due to the automated .rtf to .html conversion. However, the abstracts will be distributed correctly as received in a complied brochure format on the day of the meeting.

* a conserved tyrosine residue in the cytochrome bc1 complex helps to regulate the high oxidation potential of the [2fe-2s] cluster prior to hydroquinone oxidation.
authors:Jason W. Cooley and Fevzi Daldal
affiliations:Deaprtment of Biology , University of Pennsylvania
presenter:J. W. Cooley
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* a functional hybrid between the cytochrome bc1 complex and its physiological membrane anchored electron acceptor cytochrome cy in rhodobacter capsulatus
authors:Dong-Woo Lee^1, Yavuz Ozturk^1, Aygun Mamedova^1, Artur Osyczka^2, Jason W. Cooley^1, and Fevzi Daldal^1*
affiliations:1 Department of Biology, Plant Science Institute, and 2 Department of Biochemistry and Biophysics, The Johnson Research Foundation, University of Pennsylvania, Philadelphia, PA 19104, USA
presenter:Dong-Woo Lee
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* analysis of proposed mechanisms of water splitting in photosystem ii
authors:James P. McEvoy, Ranitendranath Tagore, Gary W. Brudvig
affiliations:Department of Chemistry, Yale University
presenter:James P. McEvoy
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* an examination of the evolution and diversification of light-harvesting complexes in euglena gracilis
authors:Adam Koziol and Dion G. Durnford
affiliations:Department of Biology, University of New Brunswick, Fredericton, NB, E3B 6E1, Canada
presenter:Adam Koziol
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* a structure-function study of the psbs protein of photosystem ii based on phylogeny and site-directed mutagenesis
authors:Neil. P. Schultes and Richard B. Peterson
affiliations:Dept. of Biochemistry & Genetics, The Connecticut Agricultural Experiment Station , 123 Huntington St., New Haven, CT 06504
presenter:Neil P. Schultes
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* biogenesis of the bound iron-sulfur clusters in photosystem i
authors:John H. Golbeck1,2, Ramakrishnan Balasubramanian1 and Donald A. Bryant1
affiliations:1Department of Biochemistry and Molecular Biology, 1,2Department of Chemistry, The Pennsylvania State University, University Park, PA 16802
presenter:John H. Golbeck
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* comparative proteomics reveals that the amount of the periplasmic protease degp becomes crucial in the absence of the dithiol:disulfide oxidoreductase dsba
authors:Ozlem Onder, Serdar Turkarslan, David Sun and Fevzi Daldal
affiliations:Department of Biology, Plant Science Institute, University of Pennsylvania, Phila PA 19104
presenter:Ozlem Onder
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* density functional theory based calculations for the study of the vibrational properties of chlorophyll a
authors:Ruili Wang and Gary Hastings
affiliations:Department of Physics and Astronomy, Georgia State University, Atlanta, GA
presenter:Ruili Wang
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* femtosecond time-resolved absorption spectroscopy of open chain carotenoids
authors:Hong Cong(2), Dariusz Niedzwiedzki(1), George N. Gibson(2) and Harry A. Frank(1)
affiliations:(1)Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA , (2)Department of Physics, University of Connecticut, Storrs, CT 06269-3046, USA
presenter:Hong Cong
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* femtosecond time-resolved absorption spectroscopy of xanthophylls
authors:Dariusz M. Niedzwiedzki(1), Tomáš Polívka(2) and Harry A. Frank(1)
affiliations:(1)Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA , (2)Institute of Physical Biology, University of South Bohemia, Nové Hrady, Czech Republic
presenter:Dariusz M. Niedzwiedzki
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* hyperfine sublevel correlation spectroscopy (hyscore): determining the electronic structure of monomeric chlorophyll a
authors:Michelle Mac, Catherine P. Jung, Elodie Rolando, and Jean Rockford
affiliations:Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC 29424
presenter:Michelle Mac
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* identification of a ferredoxin-like protein (pshb) that binds the terminal electron clusters (fa and fb) in heliobacterium modesticaldum
authors:Mark Heinnickel, Gaozhong Shen, and John H. Golbeck
affiliations:Department of Biochemistry and Molecular Biology, Department of Chemistry, The Pennsylvania State University, University Park, PA 16802 USA
presenter:Mark Heinnickel
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* identification of a gene cluster responsible for the brown phenotype in green sulfur bacteria
authors:Julia A. Maresca, Tao Li, and Donald A. Bryant
affiliations:Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802
presenter:Julia A. Maresca
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* influence of the redox potential of qa on photoinhibition
authors:C. Fufezan1,2,3, C. Groß1,2, M. Sjödin1, A. W. Rutherford1, A. Krieger-Liszkay2 and D. Kirilovsky1
affiliations:1 Service de Bioénergétique, DBJC, CNRS URA 2096, CEA Saclay, 91191 Gif-sur-Yvette, France. , 2 Institut für Biologie II, Biochemie der Pflanzen, Universität Freiburg, Schänzlestr. 1, 79104 Freiburg, Germany. , 3 Physics Department J419, City College of New York, 160 Convent Ave, New York, 10031 NY.
presenter:Christian Fufezan
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* iron-responsive differential expression of photosynthesis and nitrogen fixation genes in the marine diazotroph trichodesmium erythraeum ims101
authors:Tuo Shi1, Yi Sun2 and Paul G. Falkowski1,3
affiliations:1 Environmental Biophysics and Molecular Ecology, Institute of Marine and Coastal Sciences, Rutgers University , 2 Department of Molecular Biology and Biochemistry, Waksman Institute of Microbiology, Rutgers University , 3 Department of Geological Sciences, Rutgers University
presenter:Tuo Shi
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* ligand replacement and hydrogen bond perturbation of chld1 of photosystem ii; altered spectral and kinetic properties
authors:Rachel Cohen
affiliations:E. I du Pont de Nemours & Co
presenter:Rachel Cohen
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* mechanism of the down regulation of photosynthesis by blue light in the cyanobacterium synechocystis sp pcc 6803
authors:Matt Scott(1), Chantal McCollum(1), Sergej Vasl’ev(1), Cheryl Crozier(2), George S. Espie(2), Marianna Krol(3), Norm P.A. Huner(3) and Doug Bruce(1)
affiliations:(1)Department of Biological Sciences, Brock University, St. Catharines, Ontario, Canada, L2S 3A1. (2)Department of Botany, University of Toronto at Missisauga, Missisauga, Ontario, Canada, L5L 1C6. (3)Department of Biological Sciences, University of Western Ontario, London, Canada, N6A 5B8
presenter:Matt Scott
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* mechanistic influences on the efficiency of photosynthetic water oxidation
authors:Tyler Brown, Gennady Ananyev, and G. Charles Dismukes
affiliations:Princeton University Department of Chemistry
presenter:Tyler Brown, G. Charles Dismukes
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* nature's renewable energy blueprint: future fuel from photosynthesis & biomimics
authors:Charles Dismukes
affiliations:Princeton University
presenter:Charles Dismukes
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* on the origin of the 1656(+)/1637(-) cm-1 difference band in (p700+-p700) ftir difference spectra: low temperature ftir difference spectroscopy for the study of p700 in y(b718)t mutant cyanobacterial ps i particles.
authors:Sreeja Parameswaran and Gary Hastings
affiliations:Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303
presenter:Sreeja Parameswaran
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* ornithine lipid is essential for the presence of c-type cytochromes in rhodobacter capsulatus

authors:Semra Aygun-Sunar1, Sevnur Mandaci2, Hans-George Koch1, Ian V. J. Murray3, Howard Goldfine4 and Fevzi Daldal1
affiliations:1Department of Biology, Plant Science Institute, University of Pennsylvania, Philadelphia, PA 19104, 2TUBITAK, Research Institute for Genetic Engineering and Biotechnology, P. O. Box 21, Gebze-Kocaeli, 41470 Turkey, 3Department of Pharmacology and 4Department of Microbiology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
presenter:Semra Aygun-Sunar
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* p700+ reduction in leaves of cucumis sativus l. following chilling-induced photoinhibition
authors:Sridharan Govindachary, Steve Boisvert, Alain Gauthier, Johanne Harnois, Caroline Bigras and Robert Carpentier
affiliations:Groupe de Recherche en Biologie Végétale (GRBV) Université du Québec à Trois-Rivières
presenter:Sridharan Govindachary
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* photosynthetic oxygen evolution – past, present and future
authors:Ken Sauer
affiliations:Lawrence Berkeley National Laboratory, University of California, Berkeley
presenter:Ken Sauer
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* progress toward high throughput structure-function analysis of the psbs protein: properties of psbs-silenced nicotiana benthamiana.
authors:Richard B. Peterson and Neil P. Schultes
affiliations:Department of Biochemistry and Genetics, The Connecticut Agricultural Experiment Station, New Haven, CT USA
presenter:Richard B. Peterson
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* proposed role for the homologs of bchq and bchr in green sulfur bacteria
authors:Aline Gomez Maqueo Chew (1), Niels-Ulrik Frigaard (1,2) and Donald A. Bryant (1)
affiliations:(1)Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pa 16801 (2) Department of Biological Chemistry, University of Copenhagen
presenter:Aline Gomez Maqueo Chew
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* protein dynamics of photosystem ii; changing protein conformation affects reaction center function.
authors:Doug Bruce and Sergej Vasil'ev
affiliations:Department of Biological Sciences , Brock University , St. Catharines, Ontario , Canada , L2S 3A1
presenter:Doug Bruce
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* protein profiling of plastoglobules in chloroplasts and chromoplasts; a surprising site for differential accumulation of metabolic enzymes
authors:Klaas J. van Wijk, A. Jimmy Ytterberg, Jean-Benoit Peltier
affiliations:Department of Plant Biology, Cornell University, Ithaca, NY
presenter:Klaas J. van Wijk
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* qm/mm model of the oxygen-evolving complex of photosystem ii
authors:Eduardo M. Sproviero, Jose A. Gascon, James P. McEvoy, Gary W. Brudvig and Victor S. Batista
affiliations:Yale Univeristy
presenter:Victor S. Batista
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* quantification of in vivo supplemented anthraquinones incorporated into ps i complexes of synechocystis sp. pcc 6803 mutants lacking phylloquinone
authors:Shelley Reppert, Eric Drago, John Golbeck, Art Van der Est and T. Wade Johnson
affiliations:Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, 16802. Department of Chemistry, Brock University, Ontario, Canada L2S 3A1. Department of Chemistry, Susquehanna University, 514 University Ave , Selinsgrove, PA 17870
presenter:Wade Johnson
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* quantitative analysis of the o-j-i-p chlorophyll fluorescence rise reveals the apparent activation energies of each kinetic step
authors:Steve Boisvert, David Joly and Robert Carpentier
affiliations:Groupe de Recherche en Biologie Végétale (GRBV), Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada G9A 5H7
presenter:Steve Boisvert
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* search for the intermediate and tertiary electron acceptors of the photosynthetic reaction center in heliobacterium modesticaldum
authors:Steven Romberger1, Mark Heinnickel1, Rufat Agalarov1, and John H. Golbeck1,2
affiliations:Department of Biochemistry and Molecular Biology1, Department of Chemistry2, The Pennsylvania State University, University Park, PA 16801
presenter:Steven Romberger
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* spectroscopic studies of the main-form and high-salt peridinin-chlorophyll a-protein from amphidinium carterae
authors:Robielyn P. Ilagan(1), Roger G. Hiller(2), Frank P.Sharples(2) and Harry A. Frank(1)
affiliations:(1)Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA , (2)School of Biological Sciences, Macquarie University, NSW 2109, Australia
presenter:Robielyn P. Ilagan
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* steady-state and femtosecond time-resolved optical spectroscopic studies of peridinin derivatives
authors:Nirmalya Chatterjee(1), Robielyn P. Ilagan(1), Shigeo Katsumura(2) and Harry A. Frank(1)
affiliations:(1)Department of Chemistry, University of Connecticut, Storrs, CT, 06269-3060, USA , (2)Department of Chemistry, Faculty of Science, Kwansei Gakuin University, Gakuen, Sanda, 669-1337, Hyogo, Japan
presenter:Nirmalya Chatterjee
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* the evolution of the lhc superfamily in chl a/b-containing organisms
authors:Adam Koziol 1, Tudor Borza 2, Ken Ishida 3 Patrick Keeling 3, Robert Lee 2, and Dion G. Durnford 1
affiliations:Dept. Biology, University of New Brunswick, Canada (1); Biology, Dalhousie University, Canada (2); Botany, University British Columbia, Canada (3)
presenter:Dion G. Durnford
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* the function of individual xanthophyll species in light harvesting and photoprotection of the higher plant chloroplast.
authors:Roberto Bassi
affiliations:Dipartimento Scientifico e Tecnologico, Università di Verona (Italy) , and , Laboratoire de Génétique et Biophysique des Plantes, Université Aix-Marseille II ( France)
presenter:Dr. R. Bassi
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* the molecular details underlying phylloquinone function in photosystem i
authors:Gary Hastings, K.M. Priyangika Bandaranayake and Ruili Wang
affiliations:Georgia State University, Department of Physics and Astronomy, Atlanta, GA
presenter:Gary Hastings
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* thermodynamics of photosynthesis and the storage of energy
authors:David Mauzerall
affiliations:Rockefeller University , 1230 York Avenue , New York, NY 10021-6399
presenter:D Mauzerall
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* the role of aspartate d556psab in electron transfer through phylloquine in ps i
authors:Art van der Est1,Sara Chirico1, John Golbeck2
affiliations:1Deptartment of Chemistry, Brock University, St.Catharines, ON, L2S 3A1, Canada. , , 2Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, 16802, USA.
presenter:Art van der Est
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* time-resolved ftir difference spectroscopy used to study photosystem i particles with different quinones occupying the a1 binding site
authors:K.M. Priyangika Bandaranayake, Ruili Wang and Gary Hastings
affiliations:Department of Physics and Astronomy, Georgia State University
presenter:K.M. Priyangika Bandaranayake
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* ultrafast time-resolved transient absorption spectroscopy of lhciib and cp monomers from dark-adapted and illuminated spinach thylakoids
authors:Mary Grace I. Galinato, Cailin Deal and Harry A. Frank
affiliations:Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA
presenter:Mary Grace I. Galinato
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* unusual properties of the light-harvesting 1 complex of purple bacteria: structural implications of nonconservative near-ir circular dichroism spectrum
authors:Sofia Georgakopoulou,† Gert van der Zwan,* Rienk van Grondelle† and Robert A. Niederman+
affiliations:†Department of Biophysics and Physics of Complex Systems, and *Department of Analytical Chemistry and Applied Spectroscopy, Vrije Universiteit, 1081 HV Amsterdam, The Netherlands, and +Department of Molecular Biology and Biochemistry, Rutgers University, Piscataway, New Jersey 08854
presenter:Robert A. Niederman
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