Tracking the molecular evolution of photosynthesis through characterization of atomic contents of the photosynthetic units.

School of Biological Sciences, University of Sydney, Sydney, NSW, 2006, Australia.
Photosynthesis Research (Impact Factor: 3.15). 10/2008; 97(3):255-61. DOI:10.1007/s11120-008-9356-4
Source: PubMed

ABSTRACT Oxygen molecules have a great impact on protein evolution. We have performed a comparative study of key photosynthetic proteins in order to seek the answer to the question; did the evolutionary substitution of oxygen- and nitrogen-containing residues in the photosynthetic proteins correspond to nutrient constraints and metabolic optimization? The D1 peptide in RC II complexes has higher oxygen-containing amino acid residues and PufL/PufM have lower oxygen content in their peptides. In this article, we also discuss the possible influences of micro-environment and the available nutrients on the protein structure and their atomic distribution.

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Min Chen