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FEBS Lett. 1993 Sep 6;330(1):99-104.

The cyanobacterium, Synechococcus sp. PCC7942, possesses two distinct genes encoding cation-transporting P-type ATPases.

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1
Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Japan.

Abstract

P-type (or E1 E2-type) ATPases comprise a large family of prokaryotic and eukaryotic proteins capable of transporting a variety of cations, and function in a wide variety of cellular processes. The present study was carried out to search for genes encoding P-type ATPases in the phototrophic cyanobacterium, Synechococcus sp. PCC7942. We succeeded in cloning two genes each encoding P-type ATPases from this bacterium. It was found that Synechococcus at least, two distinct P-type ATPases; one belongs to the family of typical prokaryotic P-type ATPases and the other markedly resembles eukaryotic P-type ATPases. An insertion mutant lacking either of these two ATPase-genes was constructed. The results showed that the growth of these mutants is hypersensitive to osmotic stress upon addition of NaCl or sorbitol to the medium.

PMID:
8370468
DOI:
10.1016/0014-5793(93)80928-n
[Indexed for MEDLINE]
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