Insights into the cellular function of YhdE, a nucleotide pyrophosphatase from Escherichia coli.
Insights into the cellular function of YhdE, a nucleotide pyrophosphatase from Escherichia coli.
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深入了解 YhdE(一种来自大肠杆菌的核苷酸焦磷酸酶)的细胞功能
DOI:
10.1371/journal.pone.0117823
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Jia Z
中科院分区:
文献类型:
--
作者:
Jin J;Wu R;Zhu J;Yang S;Lei Z;Wang N;Singh VK;Zheng J;Jia Z
YhdE, a Maf-like protein in Escherichia coli, exhibits nucleotide pyrophosphatase (PPase) activity, yet its cellular function remains unknown. Here, we characterized the PPase activity of YhdE on dTTP, UTP and TTP and determined two crystal structures of YhdE, revealing ‘closed’ and ‘open’ conformations of an adaptive active site. Our functional studies demonstrated that YhdE retards cell growth by prolonging the lag and log phases, particularly under stress conditions. Morphology studies showed that yhdE-knockout cells transformed the normal rod shape of wild-type cells to a more spherical form, and the cell wall appeared to become more flexible. In contrast, YhdE overexpression resulted in filamentous cells. This study reveals the previously unknown involvement of YhdE in cell growth inhibition under stress conditions, cell-division arrest and cell-shape maintenance, highlighting YhdE’s important role in E. coli cell-cycle checkpoints.
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DOI:
10.1073/pnas.97.12.6328
发表时间:
2000-06-06
影响因子:
11.1
作者:
Minasov, G;Teplova, M;Egli, M
通讯作者:
Egli, M
影响因子:
9.9
作者:
通讯作者:
--
影响因子:
11.4
作者:
Li, ZW;Pandit, S;Deutscher, MP
通讯作者:
Deutscher, MP
影响因子:
3.2
作者:
Trusca, D;Scott, S;Bramhill, D
通讯作者:
Bramhill, D
影响因子:
3.6
作者:
Leaver, M;Errington, J
通讯作者:
Errington, J