(P8A-1) Spectral analysis on the structure and function of carotenoid in the cytochrome b₆f complex from marine green alga Bryopsis corticulans. (Abstract 382)
Liang-bi Li^*,1, Bin-xing Li², Yu-Long Liu³, Ting-yun Kuang⁴, ¹ 20 Nanxincun, Xiangshan, Haidian District, Institute of Botany,The Chinese Academy of Sciences, Beijing 100093, China, China² 20 Nanxincun, Xiangshan, Haidian District, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China, China³ Institute of Physics, the Chinese Academy of Sciences, Beijing 100080, China, China⁴ 20 Nanxincun, Xiangshan, Haidian District, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China, China

(P8A-2) Purification and characterization of cyanobacterial cytochrome b₆f complexes: Indications for a new subunit. (Abstract 383)
Thomas Volkmer¹, Melanie Ambill^*,1, Meike Gendrullis¹, Regina Oworah-Nkruma¹, Dirk Schneider¹, Matthias Rögner^*,1, ¹ Plant Biochemistry, Bochum, Germany

(P8A-3) EPR caracterization of the additional heme ci of cytochrome b₆f complex. (Abstract 384)
Frauke Baymann^*,1, Daniel Picot², David Stroebel², Wolfgang NItschke¹, ¹ CNRS/BIP09, Marseille cedex20, France² IBPS, Paris, France

(P8A-4) Observation of quinone oxidation (Q_o)/quinone reduction (Q_i) site interaction in the bc₁ complex via oriented EPR analysis. (Abstract 385)
Jason Cooley^*,1, Fevzi Daldal¹, ¹ 415 S. University Ave, Philadelphia, PA, USA

(P8A-5) Unusual optical properties of the monomeric chlorophyll a in the cytochrome b₆ f complex of oxygenic photosynthesis. (Abstract 386)
William Cramer¹, Naranbaatar Dashdorj^*,2, Huamin Zhang¹, Hanyoup Kim², Jiusheng Yan¹, Sergei Savikhin², ¹ Department of Biological Sciences, West Lafayette, IN, USA² Department of Physics, West Lafayette, IN, USA

(P8A-6) Elucidating the mechanism of superoxide production by the cytochrome bc₁ complex in Saccharomyces cervisiae. (Abstract 387)
Isaac Forquer^*,1, Jonathan Cape¹, David Kramer¹, ¹ Washington State University, Pullman, WA, USA

(P8A-7) Brownian dynamics studies of the interaction of cyanobacterial plastocyanins with cytochrome f. (Abstract 388)
Elizabeth Gross^*,,

(P8A-8) The conformation of cytochrome f influences the accumulation and assembly of the cytochrome b₆f complex in Chlamydomonas reinhardtii. (Abstract 389)
Loreta Gudynaite-Savitch^*,1, Leonid Savitch², John Sommonds², Susanne Kohalmi¹, Norman Huner¹, ¹ Department of Biology, University of Western Ontario, London, Ontario, Canada² ECORC, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada

(P8A-9) Mechanistic and physiological significance of superoxide production at the Qo-site of the yeast cytochrome bc₁-complex. (Abstract 390)
Atsuko Kanazawa^*,1, Florian Muller¹, David Kramer¹, ¹ Institute of Biological Chemistry, Pullman, Washington, USA

(P8A-10) Proton transfer paths at the quinone oxidizing site of the Rb. capsulatus cytochrome bc complex. (Abstract 391)
Sergey Klishin^{*,1, 2}, Armen Mulkidjanian^*,2, ¹ A.N.Belozersky Institute of Physico-Chemical Biology, Moscow, Russia² Dept. of Biophysics, Osnabrueck, Germany

(P8A-11) The functional role of the monomeric chlorophyll a in the cytochrome b₆f complex of oxygenic photosynthesis. (Abstract 392)
Naranbaatar Dashdorj¹, Huamin Zhang², Hanyoup Kim¹, Jiusheng Yan², William Cramer², Sergei Savikhin^*,1, ¹ Department of Physics, West Lafayette, IN, USA² Department of Biological Sciences, West Lafayette, IN, USA

(P8A-12) Molecular basis of the major difference between the X-ray structure of cytochrome b₆f complex from M. laminosus and C. reinhardtii: Binding site of tridecyl-stigmatellin. (Abstract 393)
Jiusheng Yan¹, William Cramer^*,1, ¹ Department of Biological Sciences, Purdue University, 915 West State Street, West lafayette, Indiana, USA

(P8A-13) The new heme of the cytochrome b₆f complex: an old acquaintance? (Abstract 7394)
Fabrice Rappaport^*,1, Yves Pierre², Daniel Picot², Jérôme Lavergne³, ¹ Institut de Biologie Physico-Chimique, CNRS UPR 1261, Paris, France² Institut de Biologie Physico-Chimique, CNRS UMR 7099, Paris, France³

(P8A-14) A special isoform of the Rieske-FeS protein involved in heterocyst formation ofAnabaena sp. PCC 7120. (Abstract 7395)
Matthias Arnold¹, Günter Hauska^*,1, Iris Maldener¹, ¹ Lehrstuhl für Zellbiologie und Pflanzenphysiologie, Germany