Type IV pili and cell motility

被引:342
作者
Wall, D [1 ]
Kaiser, D
机构
[1] Stanford Univ, Dept Biochem, Sch Med, Stanford, CA 94305 USA
[2] Stanford Univ, Dept Dev Biol, Sch Med, Stanford, CA 94305 USA
关键词
D O I
10.1046/j.1365-2958.1999.01339.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
Type IV pili (Tfp) mediate the movement of bacteria over surfaces without the use of flagella. These movements are known as social gliding in Myxococcus xanthus and twitching in organisms such as Pseudomonas aeruginosa and Neisseria gonorrhoeae. Tfp are localized polarly. Type IV pilins have a signature N-terminal domain, which forms a coiled-coil with other monomer units to polymerize a pilus fibre. At least 10 more proteins at the base of the fibre are conserved; they are related to the type II secretion system. Movements produced by Tfp range from short, jerky displacements to lengthy, smooth ones. Tfp also participate in cell-cell interactions, pathogenesis, biofilm formation, natural DNA uptake, auto-aggregation of cells and development. What is the means by which Tfp bring about the movement of cells?
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页码:1 / 10
页数:10
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