Searching for Enyzme Commission number 3.2.1.23 (Beta-galactosidase.) by Reannotation, by TIGRFam, by KEGG ortholog group, by SEED annotation, or by best hit in MetaCyc

Match by KEGG's EC number for 3.2.1.23

Gene ID	Gene Name	KO	KO Description	Genome	Fitness
b0344	lacZ	K01190	beta-galactosidase	Escherichia coli BW25113	sig.
b3076	ebgA	K12111	evolved beta-galactosidase subunit alpha	Escherichia coli BW25113	insig.

Or search for '3.2.1.23' in Escherichia coli BW25113 using Curated BLAST