A new gene, sigG, encoding a putative alternative sigma factor of Streptomyces coelicolor A3(2)

被引：8

作者：

Kormanec, J ^{[1
]}

Homerová, D ^{[1
]}

Barák, I ^{[1
]}

Sevcíková, B ^{[1
]}

机构：

[1] Slovak Acad Sci, Inst Mol Biol, Bratislava 84251, Slovakia

来源：

FEMS MICROBIOLOGY LETTERS | 1999年 / 172卷 / 02期

关键词：

recombinant DNA; RNA polymerase; sigma factor; sequence comparison; gene disruption;

D O I：

10.1016/S0378-1097(99)00032-4

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

An oligonucleotide probe encoding a peptide motif conserved in all sigma factors was used to isolate a new gene, sigG, from a Streptomyces coelicolor A3(2) genomic library. The deduced protein of 263 amino acids with an M-r of 29 422 showed the greatest similarity to the previously identified sporulation sigma factor (sigma(F)) of Streptomyces coelicolor, and general stress response sigma factor (sigma(B)) Of Bacillus subtilis, mostly in domains suggested to be involved in recognition of -10 and -35 promoter regions. Southern-blot hybridization with DNA from several Streptomyces spp. revealed the presence of a similar gene in all strains tested. Disruption of the S. coelicolor sigG gene appeared to have no obvious effect on growth, morphology, differentiation, and production of pigmented antibiotic actinorhodin and undecylprodigiosin. (C) 1999 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.

引用

页码：153 / 158

页数：6

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