Article
The role of an alternative sigma factor in motility and pilus formation in the cyanobacterium Synechocystis sp. strain PCC6803.
Proceedings of the National Academy of Sciences of the United States of America - 16 Mar 1999
Bhaya D, Watanabe N, Ogawa T, Grossman A R
Abstract excerpt
Disruption of a gene for an alternative sigma factor, designated sigF, in the freshwater, unicellular cyanobacterium Synechocystis sp. strain PCC6803 resulted in a pleiotropic phenotype. Most notably, this mutant lost phototactic movement with a concomitant loss of pili, which are abundant on the surface of wild-type cells. The sigF mutant also secreted both high levels of yellow-brown and UV-absorbing pigments...
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