Structural and functional characterization of the VirB5 protein from the type IV secretion system encoded by the conjugative plasmid pKM101.
Proc. Natl. Acad. Sci. U.S.A.2003 Dec 23;100(26):15947-52. Epub 2003 Dec 12
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摘要
Type IV secretion systems mediate intercellular transfer of macro-molecules via a mechanism ancestrally related to that of bacterial conjugation machineries. TraC of the IncN plasmid pKM101 belongs to the VirB5 family of proteins, an essential component of most type IV secretion systems. Here, we present the structure of TraC. VirB5/TraC is a single domain protein, which consists of a three helix bundle and a loose globular appendage. Structure-based site-directed mutagenesis followed by functional studies indicates that VirB5 proteins participate in protein-protein interactions important for pilus assembly and function.
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基因功能
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原始数据
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文献解读
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