4FPP image
Entry Detail
PDB ID:
4FPP
Keywords:
Title:
Bacterial phosphotransferase
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2012-06-22
Release Date:
2012-09-12
Method Details:
Experimental Method:
Resolution:
2.20 Å
R-Value Free:
0.26
R-Value Observed:
0.22
Space Group:
C 2 2 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:phosphotransferase
Chain IDs:A, B, C
Chain Length:247
Number of Molecules:3
Biological Source:Caulobacter crescentus
Primary Citation
Structural insights into ChpT, an essential dimeric histidine phosphotransferase regulating the cell cycle in Caulobacter crescentus.
Acta Crystallogr.,Sect.F 68 1025 1029 (2012)
PMID: 22949187 DOI: 10.1107/S1744309112033064

Abstact

Two-component and phosphorelay signal-transduction proteins are crucial for bacterial cell-cycle regulation in Caulobacter crescentus. ChpT is an essential histidine phosphotransferase that controls the activity of the master cell-cycle regulator CtrA by phosphorylation. Here, the 2.2 Å resolution crystal structure of ChpT is reported. ChpT is a homodimer and adopts the domain architecture of the intracellular part of class I histidine kinases. Each subunit consists of two distinct domains: an N-terminal helical hairpin domain and a C-terminal α/β domain. The two N-terminal domains are adjacent within the dimer, forming a four-helix bundle. The ChpT C-terminal domain adopts an atypical Bergerat ATP-binding fold.

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Primary Citation of related structures