ID BGAL_YERPY Reviewed; 1066 AA. AC B1JI86; DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot. DT 29-APR-2008, sequence version 1. DT 27-MAR-2024, entry version 81. DE RecName: Full=Beta-galactosidase {ECO:0000255|HAMAP-Rule:MF_01687}; DE Short=Beta-gal {ECO:0000255|HAMAP-Rule:MF_01687}; DE EC=3.2.1.23 {ECO:0000255|HAMAP-Rule:MF_01687}; DE AltName: Full=Lactase {ECO:0000255|HAMAP-Rule:MF_01687}; GN Name=lacZ {ECO:0000255|HAMAP-Rule:MF_01687}; GN OrderedLocusNames=YPK_1739; OS Yersinia pseudotuberculosis serotype O:3 (strain YPIII). OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales; OC Yersiniaceae; Yersinia. OX NCBI_TaxID=502800; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=YPIII; RG US DOE Joint Genome Institute; RA Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H., RA Bruce D., Goodwin L., Pitluck S., Munk A.C., Brettin T., Detter J.C., RA Han C., Tapia R., Schmutz J., Larimer F., Land M., Hauser L., RA Challacombe J.F., Green L., Lindler L.E., Nikolich M.P., Richardson P.; RT "Complete sequence of Yersinia pseudotuberculosis YPIII."; RL Submitted (FEB-2008) to the EMBL/GenBank/DDBJ databases. CC -!- CATALYTIC ACTIVITY: CC Reaction=Hydrolysis of terminal non-reducing beta-D-galactose residues CC in beta-D-galactosides.; EC=3.2.1.23; Evidence={ECO:0000255|HAMAP- CC Rule:MF_01687}; CC -!- COFACTOR: CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000255|HAMAP- CC Rule:MF_01687}; CC Note=Binds 2 magnesium ions per monomer. {ECO:0000255|HAMAP- CC Rule:MF_01687}; CC -!- COFACTOR: CC Name=Na(+); Xref=ChEBI:CHEBI:29101; Evidence={ECO:0000255|HAMAP- CC Rule:MF_01687}; CC Note=Binds 1 sodium ion per monomer. {ECO:0000255|HAMAP-Rule:MF_01687}; CC -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_01687}. CC -!- SIMILARITY: Belongs to the glycosyl hydrolase 2 family. CC {ECO:0000255|HAMAP-Rule:MF_01687}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; CP000950; ACA68032.1; -; Genomic_DNA. DR RefSeq; WP_011192578.1; NZ_CP009792.1. DR AlphaFoldDB; B1JI86; -. DR SMR; B1JI86; -. DR CAZy; GH2; Glycoside Hydrolase Family 2. DR GeneID; 66841154; -. DR KEGG; ypy:YPK_1739; -. DR PATRIC; fig|502800.11.peg.2403; -. DR GO; GO:0009341; C:beta-galactosidase complex; IEA:InterPro. DR GO; GO:0004565; F:beta-galactosidase activity; IEA:UniProtKB-EC. DR GO; GO:0030246; F:carbohydrate binding; IEA:InterPro. DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule. DR GO; GO:0005975; P:carbohydrate metabolic process; IEA:InterPro. DR GO; GO:1901575; P:organic substance catabolic process; IEA:UniProt. DR Gene3D; 2.70.98.10; -; 1. DR Gene3D; 2.60.120.260; Galactose-binding domain-like; 1. DR Gene3D; 3.20.20.80; Glycosidases; 1. DR Gene3D; 2.60.40.10; Immunoglobulins; 2. DR HAMAP; MF_01687; Beta_gal; 1. DR InterPro; IPR004199; B-gal_small/dom_5. DR InterPro; IPR036156; Beta-gal/glucu_dom_sf. DR InterPro; IPR011013; Gal_mutarotase_sf_dom. DR InterPro; IPR008979; Galactose-bd-like_sf. DR InterPro; IPR014718; GH-type_carb-bd. DR InterPro; IPR006101; Glyco_hydro_2. DR InterPro; IPR023232; Glyco_hydro_2_AS. DR InterPro; IPR023933; Glyco_hydro_2_beta_Galsidase. DR InterPro; IPR006103; Glyco_hydro_2_cat. DR InterPro; IPR023230; Glyco_hydro_2_CS. DR InterPro; IPR006102; Glyco_hydro_2_Ig-like. DR InterPro; IPR006104; Glyco_hydro_2_N. DR InterPro; IPR017853; Glycoside_hydrolase_SF. DR InterPro; IPR013783; Ig-like_fold. DR InterPro; IPR032312; LacZ_4. DR PANTHER; PTHR46323; BETA-GALACTOSIDASE; 1. DR PANTHER; PTHR46323:SF2; BETA-GALACTOSIDASE; 1. DR Pfam; PF02929; Bgal_small_N; 1. DR Pfam; PF00703; Glyco_hydro_2; 1. DR Pfam; PF02836; Glyco_hydro_2_C; 1. DR Pfam; PF02837; Glyco_hydro_2_N; 1. DR Pfam; PF16353; LacZ_4; 1. DR PRINTS; PR00132; GLHYDRLASE2. DR SMART; SM01038; Bgal_small_N; 1. DR SUPFAM; SSF51445; (Trans)glycosidases; 1. DR SUPFAM; SSF49303; beta-Galactosidase/glucuronidase domain; 2. DR SUPFAM; SSF74650; Galactose mutarotase-like; 1. DR SUPFAM; SSF49785; Galactose-binding domain-like; 1. DR PROSITE; PS00719; GLYCOSYL_HYDROL_F2_1; 1. DR PROSITE; PS00608; GLYCOSYL_HYDROL_F2_2; 1. PE 3: Inferred from homology; KW Glycosidase; Hydrolase; Magnesium; Metal-binding; Sodium. FT CHAIN 1..1066 FT /note="Beta-galactosidase" FT /id="PRO_0000367023" FT ACT_SITE 477 FT /note="Proton donor" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT ACT_SITE 553 FT /note="Nucleophile" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 110 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 209 FT /ligand="Na(+)" FT /ligand_id="ChEBI:CHEBI:29101" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 209 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 432 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 434 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 477 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 477 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 553..556 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 613 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 617 FT /ligand="Na(+)" FT /ligand_id="ChEBI:CHEBI:29101" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 620 FT /ligand="Na(+)" FT /ligand_id="ChEBI:CHEBI:29101" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 620 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT BINDING 1041 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT SITE 373 FT /note="Transition state stabilizer" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" FT SITE 407 FT /note="Transition state stabilizer" FT /evidence="ECO:0000255|HAMAP-Rule:MF_01687" SQ SEQUENCE 1066 AA; 123480 MW; 6BF435A8129D49D4 CRC64; MTSQEKVPFQ VQLSLPQILS RRDWENPQIT QYHRLEAHPP FHSWRDVESA QKDRPSPQQQ TLNGLWSFSY FTQPEAVPEH WVRCDLAEAK PLPVPANWQL HGYDAPIYTN IQYPIPVNPP RVPDLNPTGC YSRDFTLEPS WLASGKTRII FDGVSSAFYL WCNGQWVGYS QDSRLPAEFD LTPYLQAGSN RIAVLVLRWS DGSYLEDQDM WRMSGIFRDV KLLHKPEIHL RDIHIMTHLS PEFTSANLEV MAAVNIPSLQ LNDPQVTGSY QLRVQLWLAD KLVASLQQPL GTQAIDERGP YTDRTQLVLR IDQPLLWSAE QPTLYRAVVS LLNHQQELIE AEAYDVGFRQ VAIHQGLLKI NGKAVLIRGV NRHEHHPQTG QAIDEESLLQ DILLMKQHNF NAVRCSHYPN HPLWYRLCDR YGLYVVDEAN IETHGMQPMS RLSDDPSWFS AFSERVTRMV QRDRNHPCII IWSLGNESGH GATHDALYRW IKTNDPTRPV QYEGGGANTL ATDILCPMYA RVDEDQPFPA VPKWSIKKWI GLPNESRPLI LCEYAHAMGN SFGGFARYWQ AFRQYPRLQG GFIWDWVDQS LTHHNDHGQP YWAYGGDFGD TPNDRQFCMN GLVFPDRSPH PSLYEAQCAQ QFFQFSLLST TPLVINITSE YLFRESDNEQ LYWRIMLEGE SVLEGSQPLN LSPESSQCYR LAEKLPTLNK PGQLWLNVEI RQPKETPWSP AQHRSAWHQW RLPQPLFSPS SDLTNATAHY APQLQHNLQL QHNRQLQHDL QLQQDEQHIK VTYQQQCWQF SRQTGRLDQW WVADKPMLLR PLQDQFVRAP LDNDIGISEA THIDPNAWVE RWKKAGMYQL QQRCLSLHVD HLSHSVQISA EYGYEFEQEP LLHSHWVYRF DRHGRMTIDV NVRIATSLPA PARIGMCCQL ADISPTVEWL GLGPHENYPD RQLAAQYGHW SLPLEQMHTA YIFPSENGLR CNTHTLNYGR WTLTGDFHFG ISRYSTQQLM VTSHQHLLEP EEGTWLNIDG FHMGVGGDDS WSPSVHIDDI LTRETYQYQI CWQYKV //