Document Detail

The evolution of photosystem I in light of phage-encoded reaction centres.
MedLine Citation:
PMID:  23148266     Owner:  NLM     Status:  MEDLINE    
Recent structural determinations and metagenomic studies shed light on the evolution of photosystem I (PSI) from the homodimeric reaction centre of primitive bacteria to plant PSI at the top of the evolutionary development. The evolutionary scenario of over 3.5 billion years reveals an increase in the complexity of PSI. This phenomenon of ever-increasing complexity is common to all evolutionary processes that in their advanced stages are highly dependent on fine-tuning of regulatory processes. On the other hand, the recently discovered virus-encoded PSI complexes contain a minimal number of subunits. This may reflect the unique selection scenarios associated with viral replication. It may be beneficial for future engineering of productive processes to utilize 'primitive' complexes that disregard the cellular regulatory processes and to avoid those regulatory constraints when our goal is to divert the process from its original route. In this article, we discuss the evolutionary forces that act on viral reaction centres and the role of the virus-carried photosynthetic genes in the evolution of photosynthesis.
Yuval Mazor; Ilanit Greenberg; Hila Toporik; Oded Beja; Nathan Nelson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Philosophical transactions of the Royal Society of London. Series B, Biological sciences     Volume:  367     ISSN:  1471-2970     ISO Abbreviation:  Philos. Trans. R. Soc. Lond., B, Biol. Sci.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-13     Completed Date:  2013-04-22     Revised Date:  2014-01-10    
Medline Journal Info:
Nlm Unique ID:  7503623     Medline TA:  Philos Trans R Soc Lond B Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  3400-5     Citation Subset:  IM    
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MeSH Terms
Amino Acid Sequence
Bacteriophages / genetics*,  metabolism
Evolution, Molecular*
Genes, Bacterial
Genes, Viral*
Oxygen / metabolism
Photosystem I Protein Complex / classification,  genetics,  metabolism*
Prochlorococcus / genetics,  metabolism,  virology
Synechococcus / genetics,  metabolism,  virology
Viral Proteins / genetics,  metabolism*
Reg. No./Substance:
0/Photosystem I Protein Complex; 0/Viral Proteins; S88TT14065/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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