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Oxygenic photosynthesis‐specific subunits of cyanobacterial NADPH dehydrogenases
Author(s) -
Ma Weimin,
Ogawa Teruo
Publication year - 2015
Publication title -
iubmb life
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.132
H-Index - 113
eISSN - 1521-6551
pISSN - 1521-6543
DOI - 10.1002/iub.1341
Subject(s) - photosynthesis , thylakoid , cyanobacteria , photosystem ii , photosystem i , nadph dehydrogenase , biology , electron transport chain , nadh dehydrogenase , bioenergetics , protein subunit , biochemistry , botany , chloroplast , chemistry , enzyme , mitochondrion , bacteria , gene , genetics , nitric oxide synthase
Cyanobacterial NADPH dehydrogenase (NDH‐1) or NDH‐1‐like complex is localized in the thylakoid membrane and participates in a variety of bioenergetic reactions, including respiration, cyclic electron transport around photosystem I and CO 2 uptake. Over the past decade, a significant achievement has been made in identifying seven oxygenic photosynthesis‐specific (OPS) subunits of NDH‐1 enzyme, NdhL to NdhQ and NdhS, in several cyanobacterial strains. Six of them are also found in higher plants but not in nonphototrophs. This indicates an exclusive existence of these OPS Ndh subunits in oxygenic photosynthetic organisms and suggested certain role of cyanobacterial and chloroplastic NDH‐1 in photosynthetic reactions. In this review, we describe these seven OPS subunits of cyanobacterial NDH‐1, focusing on their identification, localization, function, and evolution from cyanobacteria to higher plants. A crucial role of these OPS subunits on the function of cyanobacterial NDH‐1 is proposed. © 2015 IUBMB Life, 67(1):3–8, 2015