ID B4GT3_CRIGR Reviewed; 395 AA.
AC Q80WN8; G3HU17;
DT 21-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 27-MAR-2024, entry version 102.
DE RecName: Full=Beta-1,4-galactosyltransferase 3;
DE Short=Beta-1,4-GalTase 3;
DE Short=Beta4Gal-T3;
DE Short=b4Gal-T3;
DE EC=2.4.1.- {ECO:0000250|UniProtKB:O60512};
DE AltName: Full=Beta-N-acetylglucosaminyl-glycolipid beta-1,4-galactosyltransferase;
DE AltName: Full=Beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase;
DE EC=2.4.1.38 {ECO:0000250|UniProtKB:O60512};
DE AltName: Full=N-acetyllactosamine synthase;
DE EC=2.4.1.90 {ECO:0000250|UniProtKB:O60512};
DE AltName: Full=Nal synthase;
DE AltName: Full=Neolactotriaosylceramide beta-1,4-galactosyltransferase;
DE EC=2.4.1.275;
DE AltName: Full=UDP-Gal:beta-GlcNAc beta-1,4-galactosyltransferase 3;
DE AltName: Full=UDP-galactose:beta-N-acetylglucosamine beta-1,4-galactosyltransferase 3;
GN Name=B4GALT3;
OS Cricetulus griseus (Chinese hamster) (Cricetulus barabensis griseus).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea;
OC Cricetidae; Cricetinae; Cricetulus.
OX NCBI_TaxID=10029;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC TISSUE=Ovary;
RX PubMed=14567696; DOI=10.1021/bi0353068;
RA Lee J., Park S.-H., Sundaram S., Raju T.S., Shaper N.L., Stanley P.;
RT "A mutation causing a reduced level of expression of six beta4-
RT galactosyltransferase genes is the basis of the Lec19 CHO glycosylation
RT mutant.";
RL Biochemistry 42:12349-12357(2003).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=21804562; DOI=10.1038/nbt.1932;
RA Xu X., Nagarajan H., Lewis N.E., Pan S., Cai Z., Liu X., Chen W., Xie M.,
RA Wang W., Hammond S., Andersen M.R., Neff N., Passarelli B., Koh W.,
RA Fan H.C., Wang J., Gui Y., Lee K.H., Betenbaugh M.J., Quake S.R.,
RA Famili I., Palsson B.O., Wang J.;
RT "The genomic sequence of the Chinese hamster ovary (CHO)-K1 cell line.";
RL Nat. Biotechnol. 29:735-741(2011).
RN [3]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=23929341; DOI=10.1038/nbt.2645;
RA Brinkrolf K., Rupp O., Laux H., Kollin F., Ernst W., Linke B., Kofler R.,
RA Romand S., Hesse F., Budach W.E., Galosy S., Muller D., Noll T.,
RA Wienberg J., Jostock T., Leonard M., Grillari J., Tauch A., Goesmann A.,
RA Helk B., Mott J.E., Puhler A., Borth N.;
RT "Chinese hamster genome sequenced from sorted chromosomes.";
RL Nat. Biotechnol. 31:694-695(2013).
CC -!- FUNCTION: Responsible for the synthesis of complex-type N-linked
CC oligosaccharides in many glycoproteins as well as the carbohydrate
CC moieties of glycolipids. {ECO:0000250|UniProtKB:O60512}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=an N-acetyl-beta-D-glucosaminyl derivative + UDP-alpha-D-
CC galactose = a beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl
CC derivative + H(+) + UDP; Xref=Rhea:RHEA:22932, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:58223, ChEBI:CHEBI:61631, ChEBI:CHEBI:66914,
CC ChEBI:CHEBI:133507; EC=2.4.1.38;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:22933;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=N-acetyl-D-glucosamine + UDP-alpha-D-galactose = beta-D-
CC galactosyl-(1->4)-N-acetyl-D-glucosamine + H(+) + UDP;
CC Xref=Rhea:RHEA:17745, ChEBI:CHEBI:15378, ChEBI:CHEBI:58223,
CC ChEBI:CHEBI:60152, ChEBI:CHEBI:66914, ChEBI:CHEBI:506227;
CC EC=2.4.1.90; Evidence={ECO:0000250|UniProtKB:O60512};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:17746;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-beta-D-Glc-(1<->1)-
CC Cer(d18:1(4E)) + UDP-alpha-D-galactose = a neolactoside
CC nLc4Cer(d18:1(4E)) + H(+) + UDP; Xref=Rhea:RHEA:31499,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:17006, ChEBI:CHEBI:17103,
CC ChEBI:CHEBI:58223, ChEBI:CHEBI:66914; EC=2.4.1.275;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:31500;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=beta-D-glucosylceramide + UDP-alpha-D-galactose = a beta-D-
CC galactosyl-(1->4)-beta-D-glucosyl-(1<->1)-ceramide + H(+) + UDP;
CC Xref=Rhea:RHEA:62552, ChEBI:CHEBI:15378, ChEBI:CHEBI:58223,
CC ChEBI:CHEBI:66914, ChEBI:CHEBI:79208, ChEBI:CHEBI:83264;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:62553;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a neolactoside IV(3)-beta-GlcNAc-nLc4Cer + UDP-alpha-D-
CC galactose = beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-
CC beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-beta-D-Glc-(1<->1')-Cer + H(+)
CC + UDP; Xref=Rhea:RHEA:62548, ChEBI:CHEBI:15378, ChEBI:CHEBI:58223,
CC ChEBI:CHEBI:66914, ChEBI:CHEBI:90357, ChEBI:CHEBI:144378;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:62549;
CC Evidence={ECO:0000250|UniProtKB:O60512};
CC -!- COFACTOR:
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035; Evidence={ECO:0000250};
CC -!- PATHWAY: Protein modification; protein glycosylation.
CC {ECO:0000250|UniProtKB:O60512}.
CC -!- SUBCELLULAR LOCATION: Golgi apparatus, Golgi stack membrane
CC {ECO:0000250}; Single-pass type II membrane protein {ECO:0000250}.
CC Note=Trans cisternae of Golgi stack. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the glycosyltransferase 7 family. {ECO:0000305}.
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DR EMBL; AY117537; AAM77196.1; -; mRNA.
DR EMBL; JH000722; EGW08561.1; -; Genomic_DNA.
DR EMBL; KE676296; ERE74030.1; -; Genomic_DNA.
DR RefSeq; NP_001233706.1; NM_001246777.2.
DR RefSeq; XP_007645568.1; XM_007647378.2.
DR RefSeq; XP_007645569.1; XM_007647379.2.
DR RefSeq; XP_007645570.1; XM_007647380.2.
DR RefSeq; XP_007645571.1; XM_007647381.1.
DR RefSeq; XP_007645572.1; XM_007647382.2.
DR AlphaFoldDB; Q80WN8; -.
DR SMR; Q80WN8; -.
DR CAZy; GT7; Glycosyltransferase Family 7.
DR GlyCosmos; Q80WN8; 3 sites, No reported glycans.
DR PaxDb; 10029-NP_001233706-1; -.
DR Ensembl; ENSCGRT00000002360; ENSCGRP00000002306; ENSCGRG00000001697.
DR Ensembl; ENSCGRT00001031762.1; ENSCGRP00001027515.1; ENSCGRG00001024503.1.
DR Ensembl; ENSCGRT00015028454; ENSCGRP00015023207; ENSCGRG00015017584.
DR GeneID; 100689346; -.
DR KEGG; cge:100689346; -.
DR CTD; 8703; -.
DR eggNOG; KOG3916; Eukaryota.
DR GeneTree; ENSGT00940000158549; -.
DR InParanoid; G3HU17; -.
DR OMA; CDPGGPR; -.
DR OrthoDB; 306273at2759; -.
DR UniPathway; UPA00378; -.
DR Proteomes; UP000001075; Unassembled WGS sequence.
DR Proteomes; UP000030759; Unassembled WGS sequence.
DR Proteomes; UP000694386; Unplaced.
DR Proteomes; UP001108280; Chromosome 5.
DR GO; GO:0005829; C:cytosol; IEA:Ensembl.
DR GO; GO:0032580; C:Golgi cisterna membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0003831; F:beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0003945; F:N-acetyllactosamine synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0005975; P:carbohydrate metabolic process; IEA:InterPro.
DR GO; GO:0006682; P:galactosylceramide biosynthetic process; IEA:Ensembl.
DR GO; GO:0006486; P:protein glycosylation; IEA:UniProtKB-UniPathway.
DR CDD; cd00899; b4GalT; 1.
DR InterPro; IPR003859; Galactosyl_T.
DR InterPro; IPR027791; Galactosyl_T_C.
DR InterPro; IPR027995; Galactosyl_T_N.
DR InterPro; IPR029044; Nucleotide-diphossugar_trans.
DR PANTHER; PTHR19300; BETA-1,4-GALACTOSYLTRANSFERASE; 1.
DR PANTHER; PTHR19300:SF33; BETA-1,4-GALACTOSYLTRANSFERASE 3; 1.
DR Pfam; PF02709; Glyco_transf_7C; 1.
DR Pfam; PF13733; Glyco_transf_7N; 1.
DR PRINTS; PR02050; B14GALTRFASE.
DR SUPFAM; SSF53448; Nucleotide-diphospho-sugar transferases; 1.
PE 2: Evidence at transcript level;
KW Disulfide bond; Glycoprotein; Glycosyltransferase; Golgi apparatus;
KW Lipid metabolism; Manganese; Membrane; Metal-binding; Reference proteome;
KW Signal-anchor; Transferase; Transmembrane; Transmembrane helix.
FT CHAIN 1..395
FT /note="Beta-1,4-galactosyltransferase 3"
FT /id="PRO_0000080536"
FT TOPO_DOM 1..10
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT TRANSMEM 11..31
FT /note="Helical; Signal-anchor for type II membrane protein"
FT /evidence="ECO:0000255"
FT TOPO_DOM 32..395
FT /note="Lumenal"
FT /evidence="ECO:0000255"
FT REGION 341..395
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 132..136
FT /ligand="UDP-alpha-D-galactose"
FT /ligand_id="ChEBI:CHEBI:66914"
FT /evidence="ECO:0000250"
FT BINDING 171..173
FT /ligand="UDP-alpha-D-galactose"
FT /ligand_id="ChEBI:CHEBI:66914"
FT /evidence="ECO:0000250"
FT BINDING 198..199
FT /ligand="UDP-alpha-D-galactose"
FT /ligand_id="ChEBI:CHEBI:66914"
FT /evidence="ECO:0000250"
FT BINDING 199
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000250"
FT BINDING 228
FT /ligand="UDP-alpha-D-galactose"
FT /ligand_id="ChEBI:CHEBI:66914"
FT /evidence="ECO:0000250"
FT BINDING 260
FT /ligand="UDP-alpha-D-galactose"
FT /ligand_id="ChEBI:CHEBI:66914"
FT /evidence="ECO:0000250"
FT BINDING 262..265
FT /ligand="N-acetyl-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:506227"
FT /evidence="ECO:0000250"
FT BINDING 293..295
FT /ligand="UDP-alpha-D-galactose"
FT /ligand_id="ChEBI:CHEBI:66914"
FT /evidence="ECO:0000250"
FT BINDING 293
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /evidence="ECO:0000250"
FT BINDING 305
FT /ligand="N-acetyl-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:506227"
FT /evidence="ECO:0000250"
FT CARBOHYD 57
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT CARBOHYD 339
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT CARBOHYD 387
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT DISULFID 79..121
FT /evidence="ECO:0000250"
FT DISULFID 192..211
FT /evidence="ECO:0000250"
SQ SEQUENCE 395 AA; 44060 MW; 7FB9760DC6329680 CRC64;
MLRRLLERPC TLALLVGSQL AVMMYLSLGG FRSLSALFGR DQGPTFDYSH PRDVYSNLSH
LPGAPVAAGA SPAEALPFCP ERSPFLVGPV SVSFSPVPSL AEIVERNPRV EPGGRYRPAG
CEARSRTAII VPHRAREHHL RLLLYHLHPF LQRQQLAYGI YVIHQAGNGM FNRAKLLNVG
VREALRDEEW DCLFLHDVDL LPENDHNLYV CDPRGPRHVA VAMNKFGYSL PYPQYFGGVS
ALTPDQYLKM NGFPNEYWGW GGEDDDIATR VRLAGMKISR PPTSVGHYKM VKHRGDKGNE
ENPHRFDLLV RTQNSWTQDG MNSLTYQLLA KELGPLYTNI TADIGTDPRG PRAPSGPRYP
PGSSQAFRQE MLQRRPPARP GPLPTANHTA PHGSH
//
