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Gene Review

PsbA  -  photosystem II D1 protein

Synechococcus phage S-PM2

 
 
 
 
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Disease relevance of psbA

  • However, the phage psbA genes form distinct subclades within this lineage, which suggests that their acquisition was not very recent [1].
  • The phage psbA genes fall into a clade that includes the psbA genes from their potential Synechococcus and Prochlorococcus hosts, and thus, this phylogenetic analysis provides evidence to support the idea of the acquisition of these genes by horizontal gene transfer from their cyanobacterial hosts [1].
 

High impact information on psbA

  • The discovery of the genes psbA and psbD, encoding the D1 and D2 core components of the photosynthetic reaction center PSII (photosystem II), in the genome of the bacteriophage S-PM2 (a cyanomyovirus) that infects marine cyanobacteria begs the question as to how these genes were acquired [1].
 

Biological context of psbA

  • The different patterns of genetic organization of the psbAD region are consistent with the idea that the psbA and psbD genes were acquired more than once by cyanomyoviruses and that their horizontal transfer between phages via a common phage gene pool, as part of mobile genetic modules, may be a continuing process [1].

References

  1. Genetic organization of the psbAD region in phages infecting marine Synechococcus strains. Millard, A., Clokie, M.R., Shub, D.A., Mann, N.H. Proc. Natl. Acad. Sci. U.S.A. (2004) [Pubmed]
 
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