› 5ahe

X-ray diffraction
1.7Å resolution

Crystal structure of Salmonella enterica HisA

Released:
DOI: 10.2210/pdb5ahe/pdb
PDB entry 5ahe coloured by chain, front view.
PDB entry 5ahe coloured by chain, side view.
PDB entry 5ahe coloured by chain, top view.
Source organism: Salmonella enterica
Primary publication:
Two-step Ligand Binding in a (βα)8 Barrel Enzyme: SUBSTRATE-BOUND STRUCTURES SHED NEW LIGHT ON THE CATALYTIC CYCLE OF HisA.
Söderholm A, Guo X, Newton MS, Evans GB, Näsvall J, Patrick WM, Selmer M
J Biol Chem 290 24657-68 (2015)
PMID: 26294764

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 analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-145288 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase Chain: A
Molecule details ›
Chain: A
Length: 253 amino acids
Theoretical weight: 27.21 KDa
Source organism: Salmonella enterica
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: P10372 (Residues: 1-245; Coverage: 100%)
Gene names: STM2076, hisA
Sequence domains: Histidine biosynthesis protein
Structure domains: Aldolase class I

Ligands and Environments

4 bound ligands:
Ligand PO4 3 x PO4
Ligand NA 1 x NA
Ligand EPE 1 x EPE
Ligand GOL 2 x GOL
1 modified residue:
Ligand CME 1 x CME

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-2
Spacegroup: P6122
Unit cell:
a: 86.769Å b: 86.769Å c: 121.53Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.176 0.174 0.206
Expression system: Escherichia coli BL21

Quick links

Citations

2 review citations

Evolution of new enzymes by gene duplication and divergence.
Copley SD. (2020)
1 more

4 mentions without citation

Two-step Ligand Binding in a (βα)8 Barrel Enzyme: SUBSTRATE-BOUND STRUCTURES SHED NEW LIGHT ON THE CATALYTIC CYCLE OF HisA.
Söderholm et al. (2015)
3 more