CATH Classification

Domain Context

CATH Clusters

Superfamily Galactose-binding domain-like
Functional Family Beta-galactosidase

Enzyme Information

3.2.1.23
Beta-galactosidase.
based on mapping to UniProt P00722
Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D- galactosides.
-!- Some enzymes in this group hydrolyze alpha-L-arabinosides; some animal enzymes also hydrolyze beta-D-fucosides and beta-D-glucosides (cf. EC 3.2.1.108).

UniProtKB Entries (1)

P00722
BGAL_ECOLI
Escherichia coli K-12
Beta-galactosidase

PDB Structure

PDB 4DUX
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Structural explanation for allolactose (lac operon inducer) synthesis by lacZ beta-galactosidase and the evolutionary relationship between allolactose synthesis and the lac repressor.
Wheatley, R.W., Lo, S., Jancewicz, L.J., Dugdale, M.L., Huber, R.E.
J.Biol.Chem.
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