| Literature DB >> 22187288 |
Abstract
Photosystem II is the oxygen-evolving enzyme of photosynthesis. It is a membrane-bound protein-pigment complex. The oxygen is produced at the oxygen-evolving centre (OEC), a Mn(4)CaO(5) metallocluster, which is largely ligated by amino acids of the D1 protein. The OEC-ligating residues are invariant between most cyanobacteria and higher plants. In this study, a new class of cyanobacterial D1 proteins has been identified in which the OEC metal-ligating residues are very different to the consensus. This new class of 'rogue' D1 proteins is associated with diazotrophic cyanobacteria. Their function, activity and origins are discussed.Entities:
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Year: 2011 PMID: 22187288 DOI: 10.1007/s11120-011-9714-5
Source DB: PubMed Journal: Photosynth Res ISSN: 0166-8595 Impact factor: 3.573