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Gene Review: 

cytM  -  cytochrome

Thermosynechococcus elongatus BP-1

 
 
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Disease relevance of cytM

  • It showed a lowered affinity for Cl(-) and Ca(2+) as reported earlier for the cytochrome c(550)-less Synechocystis 6803 mutant, but it showed a shorter lived S(2)Q(B)(-) state, rather than a stabilized S(2) state and rapid deactivation of the enzyme in the dark, which were characteristic of the Synechocystis mutant [1].
 

High impact information on cytM

  • To study the possible role of the heme of the cytochrome c(550) we constructed two mutants of Thermosynechococcus elongatus in which the residue His-92, the sixth ligand of the heme, was replaced by a Met or a Cys in order to modify the redox properties of the heme [1].
  • Redox properties of cytochrome b559 (Cyt b559) and cytochrome c550 (Cyt c550) have been studied by using highly stable photosystem II (PSII) core complex preparations from a mutant strain of the thermophilic cyanobacterium Thermosynechococcus elongatus with a histidine tag on the CP43 protein of PSII [2].
 

Other interactions of cytM

  • Functional analysis of psbV and a novel c-type cytochrome gene psbV2 of the thermophilic cyanobacterium Thermosynechococcus elongatus strain BP-1 [3].

References

  1. Cytochrome c550 in the cyanobacterium Thermosynechococcus elongatus: study of redox mutants. Kirilovsky, D., Roncel, M., Boussac, A., Wilson, A., Zurita, J.L., Ducruet, J.M., Bottin, H., Sugiura, M., Ortega, J.M., Rutherford, A.W. J. Biol. Chem. (2004) [Pubmed]
  2. Redox properties of the photosystem II cytochromes b559 and c550 in the cyanobacterium Thermosynechococcus elongatus. Roncel, M., Boussac, A., Zurita, J.L., Bottin, H., Sugiura, M., Kirilovsky, D., Ortega, J.M. J. Biol. Inorg. Chem. (2003) [Pubmed]
  3. Functional analysis of psbV and a novel c-type cytochrome gene psbV2 of the thermophilic cyanobacterium Thermosynechococcus elongatus strain BP-1. Katoh, H., Itoh, S., Shen, J.R., Ikeuchi, M. Plant Cell Physiol. (2001) [Pubmed]
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