› 4hut

X-ray diffraction
1.95Å resolution

Structure of ATP:co(I)rrinoid adenosyltransferase (CobA) from Salmonella enterica in complex with four and five-coordinate cob(II)alamin and ATP

Released:
DOI: 10.2210/pdb4hut/pdb
PDB entry 4hut coloured by chain, front view.
PDB entry 4hut coloured by chain, side view.
PDB entry 4hut coloured by chain, top view.
Source organism: Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
Primary publication:
Structural insights into the mechanism of four-coordinate Cob(II)alamin formation in the active site of the Salmonella enterica ATP:Co(I)rrinoid adenosyltransferase enzyme: critical role of residues Phe91 and Trp93.
Moore TC, Newmister SA, Rayment I, Escalante-Semerena JC
Biochemistry 51 9647-57 (2012)
PMID: 23148601

Function and Biology Details

Reaction catalysed: 
(1a) 2 cob(II)alamin + 2 [corrinoid adenosyltransferase] = 2 [corrinoid adenosyltransferase]-cob(II)alamin
Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-152035 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Corrinoid adenosyltransferase CobA Chains: A, B
Molecule details ›
Chains: A, B
Length: 191 amino acids
Theoretical weight: 21.13 KDa
Source organism: Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
Expression system: Salmonella enterica subsp. enterica serovar Typhimurium
UniProt:
  • Canonical: P31570 (Residues: 6-196; Coverage: 97%)
Gene names: STM1718, btuR, cobA
Sequence domains: ATP:corrinoid adenosyltransferase BtuR/CobO/CobP
Structure domains: P-loop containing nucleotide triphosphate hydrolases

Ligands and Environments

4 bound ligands:
Ligand MG 2 x MG
Ligand ATP 2 x ATP
Ligand B12 2 x B12
Ligand EDO 2 x EDO
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-BM
Spacegroup: P212121
Unit cell:
a: 59.862Å b: 74.223Å c: 92.396Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.178 0.175 0.232
Expression system: Salmonella enterica subsp. enterica serovar Typhimurium

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Citations

1 review citation

Microbial production of vitamin B12: a review and future perspectives.
Fang et al. (2017)
13 other articles

2 mentions without citation

Structural insights into the mechanism of four-coordinate Cob(II)alamin formation in the active site of the Salmonella enterica ATP:Co(I)rrinoid adenosyltransferase enzyme: critical role of residues Phe91 and Trp93.
Moore et al. (2012)
1 more