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Crystal structure of human beta-galactosidase in complex with galactose

X-ray diffraction
1.8Å resolution
PDB entry 3thc coloured by chain, front view.
PDB entry 3thc coloured by chain, side view.
PDB entry 3thc coloured by chain, top view.
Source organism: Homo sapiens
Assembly composition:
homo dimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Beta-galactosidase
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Multimeric state: homo dimer
Accessible surface area: 44457.43 Å2
Buried surface area: 6178.68 Å2
Dissociation area: 880.47 Å2
Dissociation energy (ΔGdiss): 0.25 kcal/mol
Dissociation entropy (TΔSdiss): 14.92 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-147669
Assembly 2
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Assembly Name: Beta-galactosidase
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Multimeric state: homo dimer
Accessible surface area: 44409.63 Å2
Buried surface area: 6186.09 Å2
Dissociation area: 883.55 Å2
Dissociation energy (ΔGdiss): 0.88 kcal/mol
Dissociation entropy (TΔSdiss): 14.92 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-147669

Macromolecules

Beta-galactosidase
Chains: A, B, C, D
Length: 654 amino acids
Theoretical weight: 73.67 KDa
Source organism: Homo sapiens
Expression system: Komagataella pastoris
UniProt:
  • Canonical: P16278 (Residues: 24-677; Coverage: 100%)
Gene names: ELNR1, GLB1
Pfam:
InterPro:
CATH:
Beta-galactosidase in PDB entry 3thc, assembly 1, front view.
Beta-galactosidase in PDB entry 3thc, assembly 1, side view.
Beta-galactosidase in PDB entry 3thc, assembly 1, top view.
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