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大肠杆菌产生的抗菌肽微菌素7的结构与作用模式

Structure and mode of action of microcin 7, an antibacterial peptide produced by Escherichia coli.

作者信息

Garcia-Bustos J F, Pezzi N, Mendez E

出版信息

Antimicrob Agents Chemother. 1985 May;27(5):791-7. doi: 10.1128/AAC.27.5.791.

Abstract

Microcin 7 is a small peptide produced and excreted to the culture medium by stationary-phase Escherichia coli cells harboring the pMccC7 plasmid (formerly named pRYC7). This peptide inhibited the growth of the enterobacteria phylogenetically closer to E. coli, apparently by blocking protein biosynthesis. The molecule was degraded with trypsin, and the resulting fragments were purified and sequenced. The results show that microcin 7 is a linear heptapeptide blocked at both ends.

摘要

微菌素7是一种由携带pMccC7质粒(原名为pRYC7)的稳定期大肠杆菌细胞产生并分泌到培养基中的小肽。这种肽明显通过阻断蛋白质生物合成来抑制与大肠杆菌系统发育关系更近的肠杆菌的生长。该分子用胰蛋白酶降解,所得片段经纯化和测序。结果表明,微菌素7是一种两端封闭的线性七肽。

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本文引用的文献

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The mechanism of protein secretion across membranes.蛋白质跨膜分泌的机制。
Nature. 1980 Jan 31;283(5746):433-8. doi: 10.1038/283433a0.
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9
A protein sequenator.蛋白质测序仪。
Eur J Biochem. 1967 Mar;1(1):80-91. doi: 10.1007/978-3-662-25813-2_14.

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