BGAL_YERP3
ID BGAL_YERP3 Reviewed; 1066 AA.
AC A7FH78;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 11-SEP-2007, sequence version 1.
DT 03-AUG-2022, entry version 83.
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=YpsIP31758_1629;
OS Yersinia pseudotuberculosis serotype O:1b (strain IP 31758).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Yersiniaceae; Yersinia.
OX NCBI_TaxID=349747;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IP 31758;
RX PubMed=17784789; DOI=10.1371/journal.pgen.0030142;
RA Eppinger M., Rosovitz M.J., Fricke W.F., Rasko D.A., Kokorina G.,
RA Fayolle C., Lindler L.E., Carniel E., Ravel J.;
RT "The complete genome sequence of Yersinia pseudotuberculosis IP31758, the
RT causative agent of Far East scarlet-like fever.";
RL PLoS Genet. 3:1508-1523(2007).
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; CP000720; ABS47972.1; -; Genomic_DNA.
DR RefSeq; WP_012104994.1; NC_009708.1.
DR AlphaFoldDB; A7FH78; -.
DR SMR; A7FH78; -.
DR CAZy; GH2; Glycoside Hydrolase Family 2.
DR EnsemblBacteria; ABS47972; ABS47972; YpsIP31758_1629.
DR KEGG; ypi:YpsIP31758_1629; -.
DR HOGENOM; CLU_002346_0_2_6; -.
DR OMA; SNWQLQG; -.
DR Proteomes; UP000002412; 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..1066
FT /note="Beta-galactosidase"
FT /id="PRO_0000367022"
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; 123440 MW; 12645739A7CC53AC 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 VPKWSIKKWV
GLPNESRPLI LCEYAHAMGN SFGGFARYWQ AFRQYPRLQG GFIWDWVDQS LTHHNDHGQP
YWAYGGDFGD TPNDRQFCMN GLVFPDRSPH PSLYEAQCAQ QFFQFSLLST TPLVINITSE
YLFRESDNEQ LYWRIMLEGE SMLEGSQPLN LSPESSQCYR LAEKLPTLNK PGQLWLNVEI
RQPKETPWSP AQHRSAWHQW RLPQPLFSPS SDLTNATAHY APQLQHNLQL QHNRQLQHDL
QLQQDEQHIK VTYQQQCWQF SRQTGRLAQW WVADKPMLLR PLQDQFVRAP LDNDIGISEA
THIDPNAWVE RWKKAGMYQL QQRCLSLHVD HLSHSVQISA EYGYEFEQEP LLHSHWVYRF
DRHGRMTIDV NVRIATSLPA PARIGMCCQL ADISPTVDWL GLGPHENYPD RQLAAQYGHW
SLPLEQMHTA YIFPSENGLR CNTHTLNYGR WTLTGDFHFG ISRYSTQQLM VTSHQHLLEP
EEGTWLNIDG FHMGVGGDDS WSPSVHIDDI LTRETYQYQI CWQYKV
