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Gene Review

psaB  -  PSI P700 apoprotein A2

Arabidopsis thaliana

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High impact information on psaB

  • In vivo labeling experiments and analyses of polysome association suggest that translational elongation of the PSI transcripts psaA and psaB is specifically arrested in the mutant [1].
  • The control proteins ribulose bisphosphate carboxylase and cytochrome f were not affected by the loss of the manganese-stabilizing proteins; the photosystem I PsaB protein, however, was significantly reduced in the low expressing transgenic plants [2].

Other interactions of psaB

  • Especially for psaA and psaB, the complex analysis demonstrated that the assumed PQ-dependent redox control is subordinate to signals linked to the relative availability of 3-PGA and DHAP, which define the assimilatory force [3].


  1. ACCUMULATION OF PHOTOSYSTEM ONE1, a member of a novel gene family, is required for accumulation of [4Fe-4S] cluster-containing chloroplast complexes and antenna proteins. Amann, K., Lezhneva, L., Wanner, G., Herrmann, R.G., Meurer, J. Plant Cell (2004) [Pubmed]
  2. The manganese-stabilizing protein is required for photosystem II assembly/stability and photoautotrophy in higher plants. Yi, X., McChargue, M., Laborde, S., Frankel, L.K., Bricker, T.M. J. Biol. Chem. (2005) [Pubmed]
  3. Regulation of gene expression by photosynthetic signals triggered through modified CO2 availability. Wormuth, D., Baier, M., Kandlbinder, A., Scheibe, R., Hartung, W., Dietz, K.J. BMC Plant Biol. (2006) [Pubmed]
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