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Identification
HMDB Protein ID HMDBP01032
Secondary Accession Numbers
  • 6320
Name Beta-1,4-galactosyltransferase 3
Synonyms
  1. Beta-1,4-GalTase 3
  2. Beta-N-acetylglucosaminyl-glycolipid beta-1,4-galactosyltransferase
  3. Beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase
  4. Beta4Gal-T3
  5. N-acetyllactosamine synthase
  6. Nal synthase
  7. UDP-Gal:beta-GlcNAc beta-1,4-galactosyltransferase 3
  8. UDP-galactose:beta-N-acetylglucosamine beta-1,4-galactosyltransferase 3
  9. b4Gal-T3
Gene Name B4GALT3
Protein Type Unknown
Biological Properties
General Function Involved in transferase activity, transferring glycosyl groups
Specific Function Responsible for the synthesis of complex-type N-linked oligosaccharides in many glycoproteins as well as the carbohydrate moieties of glycolipids.
Pathways
  • Glycosaminoglycan biosynthesis - keratan sulfate
  • Glycosphingolipid biosynthesis - lacto and neolacto series
  • N-Glycan biosynthesis
  • Other types of O-glycan biosynthesis
  • protein glycosylation
Reactions
Uridine diphosphategalactose + N-acetyl-beta-D-glucosaminylglycopeptide → Uridine 5'-diphosphate + beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminylglycopeptide details
Uridine diphosphategalactose + N-Acetyl-D-glucosamine → Uridine 5'-diphosphate + N-Acetyllactosamine details
UDP-D-galactose + Lc3Cer → UDP + Paragloboside details
UDP-D-galactose + → UDP + details
UDP-D-galactose + nLc5Cer → UDP + nLc6Cer details
UDP-D-galactose + → UDP + details
GO Classification
Biological Process
keratan sulfate biosynthetic process
post-translational protein modification
protein N-linked glycosylation via asparagine
Cellular Component
Golgi cisterna membrane
integral to membrane
Golgi membrane
Function
catalytic activity
transferase activity
transferase activity, transferring glycosyl groups
Molecular Function
beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase activity
N-acetyllactosamine synthase activity
metal ion binding
galactosyltransferase activity
Process
metabolic process
primary metabolic process
carbohydrate metabolic process
Cellular Location
  1. Single-pass type II membrane protein
  2. Golgi apparatus
  3. Golgi stack membrane
Gene Properties
Chromosome Location 1
Locus 1q21-q23
SNPs B4GALT3
Gene Sequence
>1182 bp
ATGTTGCGGAGGCTGCTGGAGCGGCCTTGCACGCTGGCCCTGCTTGTGGGCTCCCAGCTG
GCTGTCATGATGTACCTGTCACTGGGGGGCTTCCGAAGTCTCAGTGCCCTATTTGGCCGA
GATCAGGGACCGACATTTGACTATTCTCACCCTCGTGATGTCTACAGTAACCTCAGTCAC
CTGCCTGGGGCCCCAGGGGGTCCTCCAGCTCCTCAAGGTCTGCCCTACTGTCCAGAACGA
TCTCCTCTCTTAGTGGGTCCTGTGTCGGTGTCCTTTAGCCCAGTGCCATCACTGGCAGAG
ATTGTGGAGCGGAATCCCCGGGTAGAACCAGGGGGCCGGTACCGCCCTGCAGGTTGTGAG
CCCCGCTCCCGAACAGCCATCATTGTGCCTCATCGTGCCCGGGAGCACCACCTGCGCCTG
CTGCTCTACCACCTGCACCCCTTCTTGCAGCGCCAGCAGCTTGCTTATGGCATCTATGTC
ATCCACCAGGCTGGAAATGGAACATTTAACAGGGCAAAACTGTTGAACGTTGGGGTGCGA
GAGGCCCTGCGTGATGAAGAGTGGGACTGCCTGTTCTTGCACGATGTGGACCTCTTGCCA
GAAAATGACCACAATCTGTATGTGTGTGACCCCCGGGGACCCCGCCATGTTGCCGTTGCT
ATGAACAAGTTTGGATACAGCCTCCCGTACCCCCAGTACTTCGGAGGAGTCTCAGCACTT
ACTCCTGACCAGTACCTGAAGATGAATGGCTTCCCCAATGAATACTGGGGCTGGGGTGGT
GAGGATGACGACATTGCTACCAGGGTGCGCCTGGCTGGGATGAAGATCTCTCGGCCCCCC
ACATCTGTAGGACACTATAAGATGGTGAAGCACCGAGGAGATAAGGGCAATGAGGAAAAT
CCCCACAGATTTGACCTCCTGGTCCGTACCCAGAATTCCTGGACGCAAGATGGGATGAAC
TCACTGACATACCAGTTGCTGGCTCGAGAGCTGGGGCCTCTTTATACCAACATCACAGCA
GACATTGGGACTGACCCTCGGGGTCCTCGGGCTCCTTCTGGGCCACGTTACCCACCTGGT
TCCTCCCAAGCCTTCCGTCAAGAGATGCTGCAACGCCGGCCCCCAGCCAGGCCTGGGCCT
CTATCTACTGCCAACCACACAGCCCTCCGAGGTTCACACTGA
Protein Properties
Number of Residues 393
Molecular Weight 43927.63
Theoretical pI 9.25
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>Beta-1,4-galactosyltransferase 3
MLRRLLERPCTLALLVGSQLAVMMYLSLGGFRSLSALFGRDQGPTFDYSHPRDVYSNLSH
LPGAPGGPPAPQGLPYCPERSPLLVGPVSVSFSPVPSLAEIVERNPRVEPGGRYRPAGCE
PRSRTAIIVPHRAREHHLRLLLYHLHPFLQRQQLAYGIYVIHQAGNGTFNRAKLLNVGVR
EALRDEEWDCLFLHDVDLLPENDHNLYVCDPRGPRHVAVAMNKFGYSLPYPQYFGGVSAL
TPDQYLKMNGFPNEYWGWGGEDDDIATRVRLAGMKISRPPTSVGHYKMVKHRGDKGNEEN
PHRFDLLVRTQNSWTQDGMNSLTYQLLARELGPLYTNITADIGTDPRGPRAPSGPRYPPG
SSQAFRQEMLQRRPPARPGPLSTANHTALRGSH
GenBank ID Protein 2982510
UniProtKB/Swiss-Prot ID O60512
UniProtKB/Swiss-Prot Entry Name B4GT3_HUMAN
PDB IDs Not Available
GenBank Gene ID Y12509
GeneCard ID B4GALT3
GenAtlas ID B4GALT3
HGNC ID HGNC:926
References
General References
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  5. Lo NW, Shaper JH, Pevsner J, Shaper NL: The expanding beta 4-galactosyltransferase gene family: messages from the databanks. Glycobiology. 1998 May;8(5):517-26. [PubMed:9597550 ]
  6. Guo S, Sato T, Shirane K, Furukawa K: Galactosylation of N-linked oligosaccharides by human beta-1,4-galactosyltransferases I, II, III, IV, V, and VI expressed in Sf-9 cells. Glycobiology. 2001 Oct;11(10):813-20. [PubMed:11588157 ]
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