X-ray diffraction
2.65Å resolution

Crystal structure of ShkA full-length in complex with AMPPNP


Function and Biology Details

Reaction catalysed:
ATP + protein L-histidine = ADP + protein N-phospho-L-histidine
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
histidine kinase Chain: A
Molecule details ›
Chain: A
Length: 484 amino acids
Theoretical weight: 50.3 KDa
Source organism: Caulobacter vibrioides CB15
Expression system: Escherichia coli
  • Canonical: Q9ABT2 (Residues: 13-496; Coverage: 94%)
Gene names: CC0138, CC_0138, shkA
Sequence domains:

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06DA
Spacegroup: P4322
Unit cell:
a: 64.504Å b: 64.504Å c: 260.209Å
α: 90° β: 90° γ: 90°
R R work R free
0.22 0.217 0.275
Expression system: Escherichia coli