| Literature DB >> 19148771 |
Abstract
The recently published X-ray absorption fine structure of photosystem II provides a more detailed architecture of the oxygen-evolving complex (OEC) and the surrounding amino acids. In this paper, a comparison between manganese superoxide dismutase, dinuclear manganese catalase enzymes and the oxygen evolving complex in photosystem II is reported. The author suggests that the development of oxygenic photosynthesis occurred in steps, the first of which involved only one manganese ion (Mn(II)) that oxidized two water molecules to hydrogen peroxide and then oxygen.Entities:
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Year: 2009 PMID: 19148771 DOI: 10.1007/s11084-009-9159-4
Source DB: PubMed Journal: Orig Life Evol Biosph ISSN: 0169-6149 Impact factor: 1.950