MUCOID PSEUDOMONAS-AERUGINOSA IN CYSTIC-FIBROSIS - SIGNAL TRANSDUCTION AND HISTONE-LIKE ELEMENTS IN THE REGULATION OF BACTERIAL VIRULENCE

被引:56
作者
DERETIC, V
MOHR, CD
MARTIN, DW
机构
[1] Department of Microbiology, University of Texas, Health Science Center, San Antonio, Texas
关键词
INTEGRATION HOST FACTOR; HEAT-SHOCK RESPONSE; TRANSCRIPTIONAL REGULATION; ALGINATE SYNTHESIS; ESCHERICHIA-COLI; GENE-EXPRESSION; STRAINS; ALGR; MUTATIONS; CLONING;
D O I
10.1111/j.1365-2958.1991.tb01903.x
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
The profuse production of the exopolysaccharide alginate results in mucoidy, a critical virulence factor expressed by Pseudomonas aeruginosa during chronic respiratory tract infections in cystic fibrosis. Studies of the regulation of this pathogenic determinant have unravelled at least two levels of control, including bacterial signal transduction systems and histone-like elements. Although only in its initial phase, an understanding of the dual control of mucoidy may help to illuminate adaptive processes that depend on the combination of these regulatory factors. Integration of specific signals transduced by the two-component systems with inputs generated by the general state of bacterial nucleoids may govern the expression of certain virulence determinants and provide a framework facilitating selection of phenotypes successful under particular environmental conditions and selective pressures.
引用
收藏
页码:1577 / 1583
页数:7
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