(P5C-1) Flash-phototransformation of the 636 nm emitting protochlorophyllide form in dark-grown pea (Pisum sativum l.) epicotyls. (Abstract 643)
Béla Böddi^*,1, Annamária Kósa¹, ¹ Eötvös University Department of Plant Anatomy, Pázmány P. s. 1/c, Budapest, Hungary

(P5C-2) Expression of genes involved in bacteriochlorophyll synthesis in cyanobacteria Synechocystis sp. PCC6803. (Abstract 644)
Masahiro Atsuta^*,1, Yosuke Hashimoto², Tomoyuki Seki², Takanori Gotoh³, Yuka Itoh³, Masami Kobayashi³, Kazuhito Inoue², ¹ Biological Sciences Department, Tokyo, Japan² Biological Sciences Department, Hiratsuka, kanagawa, Japan³ Institute of Materials Science, Tsukuba, Ibaraki, Japan

(P5C-3) Effects of the gun5 and gun4 mutations on in vitro magnesium chelatase activity in Synechocystis. (Abstract 645)
Paul Davison^*,1, John Gray², Neil Hunter¹, ¹ Dept of Molecular Biology and Biotechnology, Sheffield, UK² Dept of Plant Sciences, Cambridge, UK

(P5C-4) The role of the C-8² and C-12¹ methylations of bacteriochlorophyll c in the green sulfur bacterium Chlorobium tepidum. (Abstract 646)
Aline Gomez Maqueo Chew^*,1, Niels-Ulrik Frigaard¹, Donald Bryant¹, ¹ Department of Biochemistry and Molecular Biology, University Park, PA, USA

(P5C-5) Thermophilic protochlorophyllide oxidoreductase: Identification and characterization of the product release steps. (Abstract 647)
Derren Heyes^*,1, Neil Hunter¹, ¹ Robert Hill Institute of Photosynthesis, University of Sheffield, Sheffield, United Kingdom

(P5C-6) Effects of light on localization of NADPH-protochlorophyllide oxidoreductase (POR)-pigment complexes in barley etioplasts. (Abstract 648)
Dragan Kovacevic^*,1, David Dewez¹, Radovan Popovic¹, ¹ UQAM, CP 8888, succursale Centre-ville, Montreal, Quebec, Canada

(P5C-7) Identification of a novel class of lycopene cyclases in photosynthetic bacteria. (Abstract 649)
Julia Maresca^*,1, Niels-Ulrik Frigaard¹, Donald Bryant¹, ¹ Department of Biochemistry and Molecular Biology, University Park, PA, USA

(P5C-8) Gene expression profiling of the tetrapyrrole metabolic pathway in Arabidopsis thaliana with a mini-array system. (Abstract 650)
Fuminori Matsumoto^*,1, Takeshi Obayashi¹, Yuko Sasaki-Sekimoto¹, Nobuyoshi Mochizuki², Hiroyuki Ohta¹, Ken-ichiro Takamiya¹, Tatsuru Masuda¹, ¹ Department of Biological Sciences, Yokohama, Kanagawa, Japan² Department of Botany, Kitashirakawa, Kyoto, Japan

(P5C-9) Carotenoids and carotenogenesis pathway in the cyanobacterium Anabaena sp. PCC 7120 and Nostoc punctiforme PCC 73102. (Abstract 651)
Mari Mochimaru^*,1, Shinichi Takaichi², ¹ Natural Science Faculty, Setagaya, Tokyo, Japan² Biological Laboratory, Kawasaki, Kanagawa, Japan

(P5C-10) Chirality at the central metal atoms of chlorophylls. (Abstract 652)
Toru Oba^*,1, Hitoshi Tamiaki², ¹ Institute for Molecular Science, Okazaki, Japan, Utsunomiya, Tochigi, Japan² Department of Bioscience and Biotechnology, Kusatsu, Shiga, Japan

(P5C-11) The mechanisms of light and dark protochlorophyllide reduction in vivo in angiosperms. (Abstract 653)
Victor Raskin^*,1, Amnon Schwartz¹, ¹ The Hebrew University of Jerusalem, Rehovot, Israel

(P5C-12) The pufQ gene regulates activity increases in two enzymes of protoporphyrin synthesis in Rhodobacter capsulatus. (Abstract 654)
Himani Utkhede^*,1, William Richards¹, ¹ Department of Molecular Biology and Biochemistry, Burnaby, BC, Canada

(P5C-13) PSII assembly in CP47 mutant of Synechocystis sp. PCC 6803 is dependent on the level of chlorophyll precursors regulated by ferrochelatase. (Abstract 655)
Roman Sobotka^{*,1, 2}, Josef Komenda^{1, 2}, Martin Tichy^{1, 2}, ¹ Institute of Physical Biology, Nove Hrady, Czech Republic² Institute of Microbiology, Trebon, Czech Republic

(P5C-14) High pressure: A tool to study volumetric changes during greening of etiolated leaves. (Abstract 656)
Katalin Solymosi^*,1, László Smeller^{2, 3}, Judit Fidy^{2, 3}, Béla Böddi¹, ¹ Department of Plant Anatomy, Eötvös University, Budapest, Hungary² Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary³ MTA-SE Research Group for Biophysics, Hungarian Academy of Science, Budapest, Hungary

(P5C-15) Protochlorophyllide spectral forms during plant development. (Abstract 657)
Reza Amirjani¹, Krystyna Sundqvist¹, Christer Sundqvist^*,1, ¹ Botanical Institute, Göteborg, Sweden

(P5C-16) Diversity of carotenoids in the Prasinophyceae, primitive members of green plants. (Abstract 658)
Yukie Yoshii¹, Shoichiro Suda², Takashi Maoka³, Isao Inouye⁴, Shinichi Takaichi^*,5, ¹ Faculty of Medical Sciences, University of Fukui, Japan² Faculty of Science, University of the Ryukyus, Japan³ Kyoto Pharmaceutical University, Japan⁴ Institute of Biological Sciences, University of Tsukuba, Japan⁵ Biological Laboratory, Nippon Medical School, Kawasaki, Japan

(P5C-17) Chlorophyll biosynthesis and protein import in response to temperature stress. (Abstract 659)
BAISHNAB TRIPATHY^*,1, SASMITA MOHANTY¹, ¹ SCHOOL OF LIFE SCIENCES, NEW DELHI, DELHI, INDIA

(P5C-18) Physical and kinetic evidence for interactions between glutamyl-tRNA reductase and glutamate 1-semialdehyde aminotransferase in Chlamydomonas reinhardtii. (Abstract 7660)
Luiza Nogaj¹, Samuel Beale^*,1, ¹ Division of Biology and Medicine, Providence, Rhode Island, USA