title: Comparative analysis of two-component signal transduction system in two streptomycete genomes.
abstract: Species of the genus Streptomyces are major bacteria responsible for producing most natural antibiotics. Streptomyces coelicolor A3(2) and Streptomyces avermitilis were sequenced in 2002 and 2003, respectively. Two-component signal transduction systems (TCSs), consisting of a histidine sensor kinase (SK) and a cognate response regulator (RR), form the most common mechanism of transmembrane signal transduction in prokaryotes. TCSs in S. coelicolor A3(2) have been analyzed in detail. Here, we identify and classify the SK and RR of S. avermitilis and compare the TCSs with those of S. coelicolor A3(2) by computational approaches. Phylogenetic analysis of the cognate SK-RR pairs of the two species indicated that the cognate SK-RR pairs fall into four classes according to the distribution of their orthologs in other organisms. In addition to the cognate SK-RR pairs, some potential partners of non-cognate SK-RR were found, including those of unpaired SK and orphan RR and the cross-talk between different components in either strain. Our study provides new clues for further exploration of the molecular regulation mechanism of streptomycetes with industrial importance.
authors.affiliation: Bioinformation Center, Key Lab of Systems Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai 200031, China.
authors.forename: Wu
authors.initials: W
authors.lastname: Wei
authors.forename: Weihua
authors.initials: W
authors.lastname: Wang
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Cao
authors.forename: Hong
authors.initials: H
authors.lastname: Yu
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.forename: Hao
authors.initials: H
authors.lastname: Tan
authors.forename: Hao
authors.initials: H
authors.lastname: Xu
authors.forename: Weihong
authors.initials: W
authors.lastname: Jiang
authors.forename: Yixue
authors.initials: Y
authors.lastname: Li
mesh_terms: D001426:Bacterial Proteins / Q000378:metabolism; D001671:Biochemistry / Q000379:methods; D003600:Cytosol / Q000378:metabolism; D016680:Genome, Bacterial; D000071677:Histidine Kinase; D008954:Models, Biological; D020411:Oligonucleotide Array Sequence Analysis; D010802:Phylogeny; D011494:Protein Kinases / Q000378:metabolism; D017434:Protein Structure, Tertiary; D015398:Signal Transduction; D013302:Streptomyces / Q000378:metabolism*; D048372:Streptomyces coelicolor / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D011494:Protein Kinases; D000071677:Histidine Kinase