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Gene Review

psbA  -  photosystem II PsbA protein (D1)

Prochlorococcus marinus subsp. pastoris str. CCMP1986

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Disease relevance of psbA

  • Expression of the psbA gene in the marine oxyphotobacteria Prochlorococcus spp [1].
  • In contrast to the cyanobacteria examined so far, both strains possess only one copy of the psbA gene, encoding the D1 protein of photosystem II core [1].

High impact information on psbA

  • The energy state of cells could, however, also be involved in this regulation, since cultures of both strains subjected to darkness showed psbA levels significantly lower when glucose was added [1].
  • The similar effects of DCMU and DBMIB on the expression of psbA suggest that light regulation of psbA in Prochlorococcus may be mediated by the electron transport chain [1].


  1. Expression of the psbA gene in the marine oxyphotobacteria Prochlorococcus spp. García-Fernández, J.M., Hess, W.R., Houmard, J., Partensky, F. Arch. Biochem. Biophys. (1998) [Pubmed]
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