Portal de Periódicos da CAPES

Identification of secreted proteins of the cyanobacterium Synechocystis sp. strain PCC 6803

2000; Oxford University Press; Volume: 193; Issue: 2 Linguagem: Inglês

10.1111/j.1574-6968.2000.tb09426.x

1574-6968

Tatiana V Sergeyenko, Dmitry A. Los,

Biocrusts and Microbial Ecology

We investigated the spectrum of secreted proteins in the cyanobacterium Synechocystis, and identified these proteins by amino-terminal sequencing. In total, seven sequences have been determined that corresponded to the proteins Sll0044, Sll1694, Sll1891, Slr0924, Slr0841, Slr0168, and Slr1855. The protein Sll1694 of 18 kDa that formed one of two major bands on SDS–PAGE was identified as cyanobacterial pilin, PilA. The amino-terminal sequence of another protein that formed a second major band was blocked. The analysis of the data revealed that five of seven proteins had distinct putative leader sequences for secretion.