STRUCTURAL AND FUNCTIONAL-ANALYSIS OF THE RCSA GENE FROM ERWINIA-STEWARTII

被引：28
作者：
POETTER, K [1 ]
COPLIN, DL [1 ]
机构：
[1] OHIO STATE UNIV,DEPT PLANT PATHOL,COLUMBUS,OH 43210
来源：
MOLECULAR & GENERAL GENETICS | 1991年 / 229卷 / 01期
关键词：
ERWINIA-STEWARTII; ERWINIA-AMYLOVORA; KLEBSIELLA-PNEUMONIAE; ESCHERICHIA-COLI; EXTRACELLULAR POLYSACCHARIDE; GENE REGULATION;
D O I：
10.1007/BF00264225
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
RcsA is a positive regulator of genes for extracellular polysaccharide biosynthesis in the Enterobacteriaceae. The nucleotide sequence of the rcsA gene from Erwinia stewartii was determined and compared to rcsA sequences from E. amylovora, Escherichia coli, and Klebsiella pneumoniae. Three highly conserved regions of the gene were identified. The C-terminal end of the open reading frame (ORF) shared significant amino acid homology to the LuxR class of bacterial activator proteins. Insertion and deletion mutagenesis of the 5' non-coding region indicated that maximal expression of rcsA was dependent upon cis-acting regulatory sequences located more than 300 bp upstream of the translational start site.
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页码：155 / 160
页数：6
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