› 1qo2

X-ray diffraction
1.85Å resolution

Crystal structure of N-((5'-phosphoribosyl)-formimino)-5-aminoimidazol-4-carboxamid ribonucleotid isomerase (EC 3.1.3.15, HisA)

Released:
DOI: 10.2210/pdb1qo2/pdb
PDB entry 1qo2 coloured by chain, front view.
PDB entry 1qo2 coloured by chain, side view.
PDB entry 1qo2 coloured by chain, top view.
Source organism: Thermotoga maritima
Primary publication:
Structural evidence for evolution of the beta/alpha barrel scaffold by gene duplication and fusion.
Lang D, Thoma R, Henn-Sax M, Sterner R, Wilmanns M
Science 289 1546-50 (2000)
PMID: 10968789

Function and Biology Details

Reaction catalysed: 
1-(5-phospho-beta-D-ribosyl)-5-((5-phospho-beta-D-ribosylamino)methylideneamino)imidazole-4-carboxamide = 5-((5-phospho-1-deoxy-D-ribulos-1-ylamino)methylideneamino)-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide
Biochemical function:
Biological process:
Cellular component:
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-194695 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase Chains: A, B
Molecule details ›
Chains: A, B
Length: 241 amino acids
Theoretical weight: 27.21 KDa
Source organism: Thermotoga maritima
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9X0C7 (Residues: 1-241; Coverage: 100%)
Gene names: TM_1037, hisA
Sequence domains: Histidine biosynthesis protein
Structure domains: Aldolase class I

Ligands and Environments

No bound ligands
1 modified residue:
Ligand MSE 6 x MSE

Experiments and Validation Details

Entry percentile scores
X-ray source: EMBL/DESY, HAMBURG BEAMLINE BW7A
Spacegroup: P21
Unit cell:
a: 46.78Å b: 73.16Å c: 62.7Å
α: 90° β: 97.42° γ: 90°
R-values:
R R work R free
0.188 0.188 0.246
Expression system: Escherichia coli

Quick links

Citations

28 review citations

One fold with many functions: the evolutionary relationships between TIM barrel families based on their sequences, structures and functions.
Nagano et al. (2002)
27 more

10 mentions without citation

De novo enzyme design using Rosetta3.
Richter et al. (2011)
9 more