The sll0886 gene, controlling light-activated heterotrophic growth, is involved in regulation of phototaxis in cyanobacterium Synechocystis sp. PCC 6803

The sll0886 gene, controlling light-activated heterotrophic growth, is involved in regulation of... The sll0886 gene, controlling light-activated heterotrophic growth (LAHG), was tested for the role in regulation of phototaxis in cyanobacterium Synechocystis sp. PCC 6803. Insertional inactivation of the gene in the genome of a wild-type strain did not affect positive (toward light) or negative (away from high light) phototaxis. However, cells lost motility when sll0886 inactivation was combined with the prqRL17Q mutation, which determined negative phototaxis at low light. Immotile cells with the prqRL17Q mutation and the inactivated sll0886 gene did not display any defect in the formation of type IV pili, essential for phototaxis. Hence, the function, rather than biogenesis, of pili was affected. It was concluded that the sll0886 gene, coding for a TPR family protein, is involved in controlling negative phototaxis of cyanobacteria at the level of photoreception and signal transduction and that its role is shared with the unidentified redundant gene whose function is suppressed by the prqRL17Q mutation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

The sll0886 gene, controlling light-activated heterotrophic growth, is involved in regulation of phototaxis in cyanobacterium Synechocystis sp. PCC 6803

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2008 by MAIK Nauka
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795408050177
Publisher site
See Article on Publisher Site

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