YeeV is an Escherichia coli toxin that inhibits cell division by targeting the cytoskeleton proteins, FtsZ and MreB.

YeeV is an Escherichia coli toxin that inhibits cell division by targeting the cytoskeleton proteins, FtsZ and MreB.
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DOI:
10.1111/j.1365-2958.2010.07433.x
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发表时间:
2011-01
影响因子:
3.6
通讯作者:
Inouye M
Inouye M
中科院分区:
生物学2区
文献类型:
--
作者:
Tan Q;Awano N;Inouye M

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自由生活细菌的毒素-抗毒素(TA)系统最近证明,这些毒素通过靶向细胞代谢的基本功能来抑制细胞生长。在这里,我们表明YeeV毒素抑制细胞分裂,导致大肠杆菌细胞形态和裂解的变化。YeeV与两种必需的细胞骨架蛋白FtsZ和MreB相互作用。纯化的YeeV抑制gtp酶活性和gtp依赖的FtsZ聚合。YeeV也抑制atp依赖性的MreB聚合。YeeV的c端缺失导致细胞伸长,n端缺失前15个氨基酸导致细胞形成柠檬形。YeeV毒素不同于其他研究充分的毒素:它指导两种细胞骨架蛋白的结合,同时抑制FtsZ和MreB。
Toxin-Antitoxin (TA) systems of free-living bacteria have recently, demonstrated that these toxins inhibit cell growth by targeting essential functions of cellular metabolism. Here we show that YeeV toxin inhibits cell division, leads to a change in morphology and lysis of E. coli cells. YeeV interacts with two essential cytoskeleton proteins, FtsZ and MreB. Purified YeeV inhibits both the GTPase activity and the GTP-dependent polymerization of FtsZ. YeeV also inhibits ATP-dependent polymerization of MreB. Truncated C-terminal deletions of YeeV result in elongation of cells, and a deletion of the first 15 amino acids from the N-terminus of YeeV caused lemon shaped cell formation. The YeeV toxin is distinct from other well studied toxins: it directs the binding of two cytoskeletal proteins and inhibits FtsZ and MreB simultaneously.
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