BGAL_YERPA
ID BGAL_YERPA Reviewed; 1060 AA.
AC Q1C6T8;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 11-JUL-2006, sequence version 1.
DT 03-AUG-2022, entry version 95.
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}; OrderedLocusNames=YPA_1868;
OS Yersinia pestis bv. Antiqua (strain Antiqua).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Yersiniaceae; Yersinia.
OX NCBI_TaxID=360102;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Antiqua;
RX PubMed=16740952; DOI=10.1128/jb.00124-06;
RA Chain P.S.G., Hu P., Malfatti S.A., Radnedge L., Larimer F., Vergez L.M.,
RA Worsham P., Chu M.C., Andersen G.L.;
RT "Complete genome sequence of Yersinia pestis strains Antiqua and Nepal516:
RT evidence of gene reduction in an emerging pathogen.";
RL J. Bacteriol. 188:4453-4463(2006).
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;
CC Evidence={ECO:0000255|HAMAP-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;
CC Evidence={ECO:0000255|HAMAP-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}.
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DR EMBL; CP000308; ABG13834.1; -; Genomic_DNA.
DR RefSeq; WP_002214048.1; NZ_CP009906.1.
DR AlphaFoldDB; Q1C6T8; -.
DR SMR; Q1C6T8; -.
DR CAZy; GH2; Glycoside Hydrolase Family 2.
DR EnsemblBacteria; ABG13834; ABG13834; YPA_1868.
DR GeneID; 57976920; -.
DR KEGG; ypa:YPA_1868; -.
DR OMA; SNWQLQG; -.
DR Proteomes; UP000001971; Chromosome.
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:0016052; P:carbohydrate catabolic process; IEA:UniProt.
DR Gene3D; 2.60.40.10; -; 2.
DR Gene3D; 2.70.98.10; -; 1.
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 Pfam; PF02929; Bgal_small_N; 1.
DR Pfam; PF16353; DUF4981; 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 PRINTS; PR00132; GLHYDRLASE2.
DR SMART; SM01038; Bgal_small_N; 1.
DR SUPFAM; SSF49303; SSF49303; 2.
DR SUPFAM; SSF49785; SSF49785; 1.
DR SUPFAM; SSF51445; SSF51445; 1.
DR SUPFAM; SSF74650; SSF74650; 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..1060
FT /note="Beta-galactosidase"
FT /id="PRO_0000367018"
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 1035
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 1060 AA; 122625 MW; 1142D7FC68E46697 CRC64;
MTSQEKVPLQ 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 QHDLQLQQDE
QHIKVTYQQQ CWQFSRQTGR LAQWWVADKP MLLRPLQDQF VRAPLDNDIG ISEATHIDPN
AWVERWKKAG MYQLQQRCLS LHVDHLSHSV QISAEYGYEF EQEPLLHSHW VYRFDRHGRM
TIDVNVRIAT SLPAPARIGM CCQLADISPT VEWLGLGPHE NYPDRQLAAQ YGHWSLPLEQ
MHTAYIFPSE NGLRCNTHTL NYGRWTLTGD FHFGISRYST QQLMVTSHQH LLEPEEGTWL
NIDGFHMGVG GDDSWSPSVH IDDILTRETY QYQICWQYKV
