AC MF_01574; DC Protein; auto TR HAMAP; MF_01574; -; 1; level=0 XX Names: LacG XX ID LACG DE RecName: Full=6-phospho-beta-galactosidase; DE EC=3.2.1.85; DE AltName: Full=Beta-D-phosphogalactoside galactohydrolase; DE Short=PGALase; DE AltName: Full=P-beta-Gal; DE Short=PBG; GN Name=lacG; XX CC -!- CATALYTIC ACTIVITY: CC Reaction=a 6-phospho-beta-D-galactoside + H2O = an alcohol + D- CC galactose 6-phosphate; Xref=Rhea:RHEA:24568, ChEBI:CHEBI:15377, CC ChEBI:CHEBI:30879, ChEBI:CHEBI:58534, ChEBI:CHEBI:91004; EC=3.2.1.85; CC -!- PATHWAY: Carbohydrate metabolism; lactose degradation; D-galactose 6- CC phosphate and beta-D-glucose from lactose 6-phosphate: step 1/1. CC -!- SIMILARITY: Belongs to the glycosyl hydrolase 1 family. XX DR PROSITE; PS00572; GLYCOSYL_HYDROL_F1_1; 1; trigger=no DR PROSITE; PS00653; GLYCOSYL_HYDROL_F1_2; 1; trigger=no DR Pfam; PF00232; Glyco_hydro_1; 1; trigger=no DR PRINTS; PR00131; GLHYDRLASE1; 1; trigger=no DR NCBIfam; TIGR01233; LacG; 1; trigger=no XX KW Glycosidase KW Hydrolase XX GO GO:0033920; F:6-phospho-beta-galactosidase activity GO GO:0005990; P:lactose catabolic process XX FT From: LACG_LACLL (P11546) FT ACT_SITE 160 FT /note="Proton donor" FT Condition: E FT ACT_SITE 375 FT /note="Nucleophile" FT Condition: E FT BINDING 19 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: Q FT BINDING 116 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: H FT BINDING 159 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: N FT BINDING 160 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: E FT BINDING 297 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: [ND] FT BINDING 428 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: [ST] FT BINDING 429 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: W FT BINDING 435 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: K FT BINDING 437 FT /ligand="D-galactose 6-phosphate" FT /ligand_id="ChEBI:CHEBI:91004" FT Condition: Y XX Size: 468-474; Related: None; Template: C7N8L9; P11546; P11175; Scope: Bacteria; Bacillota Bacteria; Fusobacteriota Fusion: Nter: None Cter: None Duplicate: in STRPN, STRR6 Plasmid: in LACLL Comments: None XX # Revision 1.17 2023/06/01 //