Coordination of Chromosome Segregation and Cell Division in Staphylococcus aureus.

Coordination of Chromosome Segregation and Cell Division in Staphylococcus aureus.
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金黄色葡萄球菌中染色体分离和细胞分裂的协调。

DOI:
10.3389/fmicb.2017.01575
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发表时间:
2017
影响因子:
5.2
通讯作者:
Harry EJ
Harry EJ
中科院分区:
生物学2区
文献类型:
--
作者:
Bottomley AL;Liew ATF;Kusuma KD;Peterson E;Seidel L;Foster SJ;Harry EJ

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生产性细菌细胞分裂和后代的存活需要染色体分离和细胞分裂之间的紧密协调,以确保DNA的平等分配。与在一个平面中进行分裂的杆状细菌不同,球形人类病原体金黄色葡萄球菌在三个连续的正交平面中分裂,这与杆状细胞相比需要不同的空间控制。为了更好地了解这种染色体分离和细胞分裂之间的协调是如何在S。金黄色葡萄球菌,我们研究了与FtsZ和分裂体相关的蛋白质。我们发现,DnaK,一个众所周知的伴侣,与FtsZ,EzrA和DivIVA相互作用,并需要DivIVA稳定。与几种杆状生物不同,S.金黄色葡萄球菌与分裂体的几种组分以及染色体分离蛋白SMC相关。这些数据,结合突变体的表型分析,表明了一个新的作用,S。aureus DivIVA确保细胞分裂和染色体分离协调。
Productive bacterial cell division and survival of progeny requires tight coordination between chromosome segregation and cell division to ensure equal partitioning of DNA. Unlike rod-shaped bacteria that undergo division in one plane, the coccoid human pathogen Staphylococcus aureus divides in three successive orthogonal planes, which requires a different spatial control compared to rod-shaped cells. To gain a better understanding of how this coordination between chromosome segregation and cell division is regulated in S. aureus, we investigated proteins that associate with FtsZ and the divisome. We found that DnaK, a well-known chaperone, interacts with FtsZ, EzrA and DivIVA, and is required for DivIVA stability. Unlike in several rod shaped organisms, DivIVA in S. aureus associates with several components of the divisome, as well as the chromosome segregation protein, SMC. This data, combined with phenotypic analysis of mutants, suggests a novel role for S. aureus DivIVA in ensuring cell division and chromosome segregation are coordinated.
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