How important is the phosphatase activity of sensor kinases?
How important is the phosphatase activity of sensor kinases?
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DOI:
10.1016/j.mib.2010.01.013
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发表时间:
2010-04
影响因子:
5.4
通讯作者:
Kenney, Linda J.
中科院分区:
文献类型:
--
作者:
Kenney, Linda J.
In two-component signaling systems, phosphorylated response regulators (RRs) are often dephosphorylated by their partner kinases in order to control the in vivo concentration of phospho-RR (RR~P). This activity is easily demonstrated in vitro, but these experiments have typically used very high concentrations of the histidine kinase (HK) compared to the RR~P. Many two-component systems exhibit exquisite control over the ratio of HK to RR in vivo. The question thus arises as to whether the phosphatase activity of HKs is significant in vivo. This topic will be explored in the present review.
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