X-ray diffraction
2Å resolution

Crystal structure of human carboxylesterase in complex with Coenzyme A

Source organism: Homo sapiens
Entry authors: Bencharit S, Edwards CC, Morton CL, Howard-Williams EL, Potter PM, Redinbo MR

Function and Biology Details

Reactions catalysed:
4-methylumbelliferyl acetate + H(2)O = 4-methylumbelliferone + acetate
A steryl ester + H(2)O = a sterol + a fatty acid
A carboxylic ester + H(2)O = an alcohol + a carboxylate
Cellular component:

Structure analysis Details

Assemblies composition:
homo hexamer (preferred)
homo dimer
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Liver carboxylesterase 1 Chains: A, B, C, D, E, F
Molecule details ›
Chains: A, B, C, D, E, F
Length: 542 amino acids
Theoretical weight: 59.79 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
  • Canonical: P23141 (Residues: 19-561; Coverage: 99%)
Gene names: CES1, CES2, SES1
Sequence domains: Carboxylesterase family
Structure domains: alpha/beta hydrolase

Ligands and Environments

Carbohydrate polymer : NEW Components: NAG
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL11-1
Spacegroup: P21
Unit cell:
a: 88.99Å b: 115.37Å c: 175.53Å
α: 90° β: 90.05° γ: 90°
R R work R free
0.183 0.183 0.221
Expression system: Spodoptera frugiperda