2wjz

X-ray diffraction
2.6Å resolution

Crystal structure of (HisH) K181A Y138A mutant of imidazoleglycerolphosphate synthase (HisH HisF) which displays constitutive glutaminase activity

Released:

Function and Biology Details

Reactions catalysed:
(1a) L-glutamine + H(2)O = L-glutamate + NH(3)
L-glutamine + H(2)O = L-glutamate + NH(3)
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-194693 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Imidazole glycerol phosphate synthase subunit HisF Chains: A, C, E
Molecule details ›
Chains: A, C, E
Length: 253 amino acids
Theoretical weight: 27.75 KDa
Source organism: Thermotoga maritima
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q9X0C6 (Residues: 1-253; Coverage: 100%)
Gene names: TM_1036, hisF
Sequence domains: Histidine biosynthesis protein
Structure domains: Aldolase class I
Imidazole glycerol phosphate synthase subunit HisH Chains: B, D, F
Molecule details ›
Chains: B, D, F
Length: 201 amino acids
Theoretical weight: 22.98 KDa
Source organism: Thermotoga maritima
Expression system: Escherichia coli K-12
UniProt:
  • Canonical: Q9X0C8 (Residues: 1-201; Coverage: 100%)
Gene names: TM_1038, hisH
Sequence domains:
Structure domains: Rossmann fold

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE BM16
Spacegroup: P32
Unit cell:
a: 93.935Å b: 93.935Å c: 166.33Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.187 0.185 0.218
Expression systems:
  • Escherichia coli BL21(DE3)
  • Escherichia coli K-12