Topological Analysis of the Extrinsic PsbO, PsbP and PsbQ Proteins in a Green Algal PSII Complex by Cross-Linking with a Water-Soluble Carbodiimide
نویسندگان
چکیده
منابع مشابه
Homologs of plant PsbP and PsbQ proteins are necessary for regulation of photosystem ii activity in the cyanobacterium Synechocystis 6803.
The mechanism of oxygen evolution by photosystem II (PSII) has remained highly conserved during the course of evolution from ancestral cyanobacteria to green plants. A cluster of manganese, calcium, and chloride ions, whose binding environment is optimized by PSII extrinsic proteins, catalyzes this water-splitting reaction. The accepted view is that in plants and green algae, the three extrinsi...
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Oxygen-evolving photosystem II (PSII) complexes of Euglena gracilis were isolated and characterized. (1) The PSII complexes contained three extrinsic proteins of 33 kDa (PsbO), 23 kDa (PsbP) and 17 kDa (PsbQ), and showed oxygen-evolving activity of around 700 micromol O2 (mg Chl)(-1) h(-1) even in the absence of Cl- and Ca2+ ions. (2) NaCl-treatment removed not only PsbP and PsbQ but also a par...
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Light-induced conversion of water to molecular oxygen by Photosystem II (PSII) is one of the most important enzymatic reactions in the biosphere. PSII is a multisubunit membrane protein complex with numerous associated cofactors, but it continually undergoes assembly and disassembly due to frequent light-mediated damage as a result of its normal function. Thus, at any instant, there is heteroge...
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ژورنال
عنوان ژورنال: Plant and Cell Physiology
سال: 2010
ISSN: 0032-0781,1471-9053
DOI: 10.1093/pcp/pcq042