The role of hydrolases in bacterial cell-wall growth.

The role of hydrolases in bacterial cell-wall growth.
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DOI:
10.1016/j.mib.2013.08.005
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发表时间:
2013-12
影响因子:
5.4
通讯作者:
Huang KC
Huang KC
中科院分区:
生物学2区
文献类型:
--
作者:
Lee TK;Huang KC

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虽然已知水解在细菌细胞壁的生长和发育中与合成一样重要,但这些过程之间的耦合尚未得到很好的理解。键解理可以产生有害的孔隙,但也可能是新材料的结合和壁的膨胀所必需的,这突出了在解释生长模型中水解的后果时机械力的重要性。关键的是,目前已经在几种模式生物中确定了最小的基本水解酶亚群,从而降低了遗传复杂性。最近对枯草芽孢杆菌的研究提供了证据,证明在孢子形成和伸长过程中,合成和水解之间分别存在或不存在偶联。在这篇综述中,我们讨论了利用延时成像、细胞壁结构的生物物理测量和计算建模来剖析合成和水解之间关系的策略。
Although hydrolysis is known to be as important as synthesis in the growth and development of the bacterial cell wall, the coupling between these processes is not well understood. Bond cleavage can generate deleterious pores, but may also be required for the incorporation of new material and for the expansion of the wall, highlighting the importance of mechanical forces in interpreting the consequences of hydrolysis in models of growth. Critically, minimal essential subsets of hydrolases have now been identified in several model organisms, enabling the reduction of genetic complexity. Recent studies in Bacillus subtilis have provided evidence for both the presence and absence of coupling between synthesis and hydrolysis during sporulation and elongation, respectively. In this review, we discuss strategies for dissecting the relationship between synthesis and hydrolysis using time-lapse imaging, biophysical measurements of cell-wall architecture, and computational modeling.
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