2KWA

1H, 13C and 15N backbone and side chain resonance assignments of the N-terminal domain of the histidine kinase inhibitor KipI from Bacillus subtilis

2KWA の概要

• エントリーDOI: 10.2210/pdb2kwa/pdb
• 分子名称: Kinase A inhibitor (1 entity in total)
• 機能のキーワード: bacterial signal transduction, kipi, histidine kinase inhibition, bacillus subtilis, transferase inhibitor
• 由来する生物種: Bacillus subtilis
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 11565.93

構造登録者

Hynson, R.M.G.,Kwan, A.,Jacques, D.A.,Mackay, J.P.,Trewhella, J. (登録日: 2010-03-31, 公開日: 2010-11-24, 最終更新日: 2024-05-01)

主引用文献

Jacques, D.A.,Langley, D.B.,Hynson, R.M.G.,Whitten, A.E.,Kwan, A.,Guss, J.M.,Trewhella, J.
A Novel Structure of an Antikinase and its Inhibitor
J.Mol.Biol., 2010

PubMed Abstract: In Bacillus subtilis, the KipI protein is a regulator of the phosphorelay governing the onset of sporulation. KipI binds the relevant sensor histidine kinase, KinA, and inhibits the autophosphorylation reaction. Gene homologues of kipI are found almost ubiquitously throughout the bacterial kingdom and are usually located adjacent to, and often fused with, kipA gene homologues. In B. subtilis, the KipA protein inhibits the antikinase activity of KipI thereby permitting sporulation. We have used a combination of biophysical techniques in order to understand the domain structure and shape of the KipI-KipA complex and probe the nature of the interaction. We also have solved the crystal structure of TTHA0988, a Thermus thermophilus protein of unknown function that is homologous to a KipI-KipA fusion. This structure, which is the first to be described for this class of proteins, provides unique insight into the nature of the KipI-KipA complex. The structure confirms that KipI and KipA are proteins with two domains, and the C-terminal domains belong to the cyclophilin family. These cyclophilin domains are positioned in the complex such that their conserved surfaces face each other to form a large "bicyclophilin" cleft. We discuss the sequence conservation and possible roles across species of this near-ubiquitous protein family, which is poorly understood in terms of function.

PubMed: 21050859
DOI: 10.1016/j.jmb.2010.10.047

実験手法

SOLUTION NMR