› 1xa3

X-ray diffraction
1.85Å resolution

Crystal structure of CaiB, a type III CoA transferase in carnitine metabolism

Released:
DOI: 10.2210/pdb1xa3/pdb
PDB entry 1xa3 coloured by chain, front view.
PDB entry 1xa3 coloured by chain, side view.
PDB entry 1xa3 coloured by chain, top view.
Source organism: Escherichia coli
Primary publication:
Crystal structure of CaiB, a type-III CoA transferase in carnitine metabolism.
Stenmark P, Gurmu D, Nordlund P
Biochemistry 43 13996-4003 (2004)
PMID: 15518548

Function and Biology Details

Reaction catalysed: 
(E)-4-(trimethylammonio)but-2-enoyl-CoA + L-carnitine = (E)-4-(trimethylammonio)but-2-enoate + L-carnitinyl-CoA
Biochemical function:
Biological process:
Cellular component:
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-152036 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
L-carnitine CoA-transferase Chains: A, B
Molecule details ›
Chains: A, B
Length: 437 amino acids
Theoretical weight: 49.7 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P31572 (Residues: 2-405; Coverage: 100%)
Gene names: JW0037, b0038, caiB, yaaN
Sequence domains: CoA-transferase family III
Structure domains:

Ligands and Environments

2 bound ligands:
Ligand SO4 2 x SO4
Ligand BTB 2 x BTB
1 modified residue:
Ligand MSE 34 x MSE

Experiments and Validation Details

Entry percentile scores
X-ray source: BESSY BEAMLINE 14.1
Spacegroup: P21
Unit cell:
a: 55.58Å b: 129.802Å c: 69.792Å
α: 90° β: 109.48° γ: 90°
R-values:
R R work R free
0.145 0.143 0.178
Expression system: Escherichia coli BL21(DE3)

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Citations

1 review citation

OCTN cation transporters in health and disease: role as drug targets and assay development.
Pochini et al. (2013)
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