How to switch off a histidine kinase: crystal structure of Geobacillus stearothermophilus KinB with the inhibitor Sda.
How to switch off a histidine kinase: crystal structure of Geobacillus stearothermophilus KinB with the inhibitor Sda.
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DOI:
10.1016/j.jmb.2008.12.006
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发表时间:
2009-02-13
影响因子:
5.6
通讯作者:
Darst, Seth A.
中科院分区:
文献类型:
--
作者:
Bick, Matthew J.;Lamour, Valerie;Rajashankar, Kanagalaghatta R.;Gordiyenko, Yuliya;Robinson, Carol V.;Darst, Seth A.
Entry to sporulation in Bacilli is governed by a histidine kinase phosphorelay, a variation on the predominant signal transduction mechanism in prokaryotes. Sda directly inhibits sporulation histidine kinases in response to DNA damage and replication defects. We determined a 2.0 Å-resolution X-ray crystal structure of the intact cytoplasmic catalytic core (comprising the Dimerization and Histidine-phosphotransfer, or DHp, domain, connected to the ATP-binding Catalytic, or CA, domain) of the Geobacillus stearothermophilus sporulation kinase KinB complexed with Sda. Structural and biochemical analyses reveal that Sda binds to the base of the DHp domain and prevents molecular transactions with the DHp domain to which it is bound by acting as a simple molecular barricade. Sda acts to sterically block communication between the CA and DHp domains required for autophosphorylation, as well as to sterically block communication between the response regulator Spo0F and DHp domain required for phosphotransfer and phosphatase activities.
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影响因子:
64.5
作者:
BURBULYS, D;TRACH, KA;HOCH, JA
通讯作者:
HOCH, JA
影响因子:
3.2
作者:
NINFA, EG;ATKINSON, MR;NINFA, AJ
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影响因子:
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作者:
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影响因子:
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作者:
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DOI:
10.1073/pnas.88.24.11057
发表时间:
1991-12-01
影响因子:
11.1
作者:
YANG, Y;INOUYE, M
通讯作者:
INOUYE, M