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General Information



Gene_Symbol Gene_ID Gene_Name Chromosome Alias
B4GALT1 2683 UDP-Gal:betaGlcNAc beta 1,4- galactosyltransferase, polypeptide 1  9beta4Gal-T1 







  • Evidence
  • Gene
  • mRNA
  • CDS
  • Protein
  • PTM
  • Enzyme
  • PPi
  • Pathway
  • Structural
  • Domain
  • Ontology
  • SNP
  • Drug
  • External Links



Evidence Information


Pubmed ID Year Sample Information Techniques Mechanism Fold Change Remark
22927297   2012Cell line : -

Source : -

Sample Type : CRC tumor and Normal tissue

No. of Sample : 130 colorectal adenocarcinomas, 13 adenomas, and in paired normal tissue

Stage : TNM Stage I-IV

Methylation specific PCRMethylation-Glycogene B4GALT1 represent a valuable candidate biomarker of invasive phenotype of colorectal cancer.

B4GALT1 methylation is a frequent and specific event in colorectal cancer and correlates with downregulation of mRNA expression.


Gene Details



Chromosome 9 - NC_000009.12 (33110637..33167358, complement)

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Gene Type protein coding
Gene Family Beta 4-glycosyltransferases
Description This gene is one of seven beta-1,4-galactosyltransferase (beta4GalT) genes. They encode type II membrane-bound glycoproteins that appear to have exclusive specificity for the donor substrate UDP-galactose; all transfer galactose in a beta1,4 linkage to similar acceptor sugars: GlcNAc, Glc, and Xyl. Each beta4GalT has a distinct function in the biosynthesis of different glycoconjugates and saccharide structures. As type II membrane proteins, they have an N-terminal hydrophobic signal sequence that directs the protein to the Golgi apparatus and which then remains uncleaved to function as a transmembrane anchor. By sequence similarity, the beta4GalTs form four groups: beta4GalT1 and beta4GalT2, beta4GalT3 and beta4GalT4, beta4GalT5 and beta4GalT6, and beta4GalT7. This gene is unique among the beta4GalT genes because it encodes an enzyme that participates both in glycoconjugate and lactose biosynthesis. For the first activity, the enzyme adds galactose to N-acetylglucosamine residues that are either monosaccharides or the nonreducing ends of glycoprotein carbohydrate chains. The second activity is restricted to lactating mammary tissues where the enzyme forms a heterodimer with alpha-lactalbumin to catalyze UDP-galactose + D-glucose <=> UDP + lactose. The two enzymatic forms result from alternate transcription initiation sites and post-translational processing. Two transcripts, which differ only at the 5' end, with approximate lengths of 4.1 kb and 3.9 kb encode the same protein. The longer transcript encodes the type II membrane-bound, trans-Golgi resident protein involved in glycoconjugate biosynthesis. The shorter transcript encodes a protein which is cleaved to form the soluble lactose synthase.  
Chromosome 9
Location 9p13
Start 33110637  
End 33167358  
Strand -  
Gene Sequence

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Length 56722  
OMIM ID 137060   
HGNC ID HGNC:924   
Unigene ID Hs.272011   
Ensembl ID ENSG00000086062   
PharmGKB ID -   

mRNA Information


mRNA ID XM_005251440.3
Exon join(33..601,31935..32170,46753..46940,53481..53585, 53773..56722)  
mRNA Sequence

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Length 4214  



CDS Information


   
Location join(190..601,31935..32170,46753..46940,53481..53585, 53773..53905)
CDS Sequence

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CCDS ID -



Protein Information


      
Protein IDNP_001488.2
Protein NameUDP-Gal:betaGlcNAc beta 1,4- galactosyltransferase, polypeptide 1
Molecular Wt. (Da)43789
Protein Sequence

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Length 398  
Uniprot IDP16402
Ensembl Protein ID ENSP00000244534  



Post-translational Modification Information (Source : HPRD)


Residue Type site
SPhosphorylation74
SPhosphorylation64

Enzyme Information


   
EC2.4.1.22
Namelactose synthase
UDP-galactose---glucose galactosyltransferase
N-acetyllactosamine synthase
uridine diphosphogalactose-glucose galactosyltransferase
lactose synthetase
UDP-galactose:D-glucose 4-beta-D-galactotransferase
UDP-galactose:D-glucose 4-beta-D-galactosyltransferase
ClassTransferases; Glycosyltransferases; Hexosyltransferases
SysnameUDP-alpha-D-galactose:D-glucose 4-beta-D-galactosyltransferase  
SubstrateUDP-alpha-D-galactose [CPD:C00052]; D-glucose [CPD:C00031]  
ProductUDP [CPD:C00015]; lactose [CPD:C00243]  
Reaction (IUBMB)



PPi Information


(Click to view network : Source STRING)      View   

                                             
Interactant Gene ID (Source: HPRD) Gene Symbol HPRD ID Ref Seq ID Technique References
985CDC2L2308NP_277073.1in vitro11506180   
7277TUBA4A1851NP_005991.1in vivo7744867   
203068TUBB1852NP_001060.1in vivo7744867   


Pathway Information


                                    
Pathway Name Pathway ID
Galactose metabolism hsa00052
Glycosaminoglycan biosynthesis - keratan sulfate hsa00533
Glycosphingolipid biosynthesis - lacto and neolacto series hsa00601
Metabolic pathways hsa01100
N-Glycan biosynthesis hsa00510
Other types of O-glycan biosynthesis hsa00514


Structure Information


PDB ID2AE7
Resolution2
Method?? X-RAY DIFFRACTION
Chains A, B,  
Molecule Beta-1,4-galactosyltransferase 1  
Model View



Domain Information




ID Location Description
cd00899175-393  b4GalT
cl11394175-393  Glyco_tranf_GTA_type superfamily
pfam13733130-262  Glyco_transf_7N
cl15817130-262  Glyco_transf_7N superfamily
pfam02709267-337  Glyco_transf_7C
cd06420219-325  GT2_Chondriotin_Pol_N
cd00761180-330  Glyco_tranf_GTA_type
TIGR04440177-241  glyco_TIGR04440
pfam10111212-331  Glyco_tranf_2_2
pfam1544942-135  Retinal
PTZ00118162-197  PTZ00118


Ontology Information


   
HPRD ID3889
Molecular ClassEnzyme: Galactosyltransferase
Molecular FunctionMolecular function unknown (GO:0005554)
Biological ProcessCarbohydrate metabolism (GO:0005975)  



SNP Information


View SNP Geneview Report   

Drug Information


Uniprot ID DrugBank ID Name Type
P15291DB00141N-Acetyl-D-glucosamineSmallMoleculeDrug

External Links


                                 
ArrayExpressGO
ICGCGO
Cancer3DGO
COSMICGO
NCGGO
TSGeneGO
Tumor Gene Family of DatabasesGO
CCDBGO
G2SBCGO
Osteosarcoma DatabaseGO
RCDBGO