The domain within your query sequence starts at position 84 and ends at position 243; the E-value for the Glyco_hydro_42 domain shown below is 6.6e-18.

IHYFRVPREYWRDRLLKLKACGLNTLTTYVPWNLHEPERGKFDFSGNLDLEAFIQLAAKI
GLWVILRPGPYICSEIDLGGLPSWLLQDPDMKLRTTYHGFTKAVDLYFDHLMSRVVPLQY
KHGGPIIAVQVENEYGSYNKDRAYMPYIKKALEDRGIIEM

Glyco_hydro_42

Glyco_hydro_42
PFAM accession number:PF02449
Interpro abstract (IPR013529):

O-Glycosyl hydrolases ( EC 3.2.1. ) are a widespread group of enzymes that hydrolyse the glycosidic bond between two or more carbohydrates, or between a carbohydrate and a non-carbohydrate moiety. A classification system for glycosyl hydrolases, based on sequence similarity, has led to the definition of 85 different families [ (PUBMED:7624375) (PUBMED:8535779) ]. This classification is available on the CAZy (CArbohydrate-Active EnZymes) website.

This group of beta-galactosidase enzymes ( EC 3.2.1.23 ) belong to the glycosyl hydrolase 42 family . The enzyme catalyses the hydrolysis of terminal, non-reducing terminal beta-D-galactosidase residues.

GO process:carbohydrate metabolic process (GO:0005975)
GO component:beta-galactosidase complex (GO:0009341)
GO function:beta-galactosidase activity (GO:0004565)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry Glyco_hydro_42