F Plasmid TraF and TraH Are Components of an Outer Membrane Complex Involved in Conjugation

被引:28
作者
Arutyunov, Denis [1 ]
Arenson, Barbara [1 ]
Manchak, Jan [1 ]
Frost, Laura S. [1 ]
机构
[1] Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
IV SECRETION SYSTEMS; MATING PAIR STABILIZATION; ESCHERICHIA-COLI; TRANSFER OPERON; TRANSFER REGION; TRANSFER GENE; DNA TRANSFER; SEX FACTOR; PROTEIN; PILUS;
D O I
10.1128/JB.00726-09
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
F plasmid TraF and TraH are required for F pilus assembly and F plasmid transfer. Using flotation sucrose density gradients, we found that TraF and TraH (as well as TraU and TraW) localized to the outer membrane in the presence of the complete F transfer region, especially TraV, the putative anchor. Mutational analysis of TraH revealed two domains that are important for its function and possible interaction with TrbI, which in turn has a role in stabilizing TraH.
引用
收藏
页码:1730 / 1734
页数:5
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