B3GAT3

Beta-1,3-glucuronyltransferase 3 (glucuronosyltransferase I)
PDB rendering based on 1fgg.
Available structures PDB 1FGG, 1KWS, 3CU0
Identifiers
Symbols	B3GAT3; GLCATI; GlcAT-I
External IDs	OMIM: 606374 MGI: 1919977 HomoloGene: 56554 GeneCards: B3GAT3 Gene
EC number	2.4.1.135
Gene Ontology Molecular function • galactosylgalactosylxylosylprotein 3-beta-glucuronosyltransferase activity • transferase activity • manganese ion binding • metal ion binding Cellular component • Golgi membrane • Golgi apparatus • membrane • integral to membrane Biological process • glycosaminoglycan biosynthetic process Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	26229	72727
Ensembl	ENSG00000149541	ENSMUSG00000071649
UniProt	O94766	Q3UJY2
RefSeq (mRNA)	NM_012200	NM_024256.2
RefSeq (protein)	NP_036332	NP_077218.1
Location (UCSC)	Chr 11: 62.38 – 62.39 Mb	Chr 19: 8.99 – 9 Mb
PubMed search	[1]	[2]

Galactosylgalactosylxylosylprotein 3-beta-glucuronosyltransferase 3 is an enzyme that in humans is encoded by the B3GAT3 gene.

The protein encoded by this gene is a member of the glucuronyltransferase gene family, enzymes that exhibit strict acceptor specificity, recognizing nonreducing terminal sugars and their anomeric linkages. This gene product catalyzes the formation of the glycosaminoglycan-protein linkage by way of a glucuronyl transfer reaction in the final step of the biosynthesis of the linkage region of proteoglycans.

Further reading

• Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network.". Nature 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514. 
• Venkatesan N, Barré L, Benani A, et al. (2005). "Stimulation of proteoglycan synthesis by glucuronosyltransferase-I gene delivery: A strategy to promote cartilage repair". Proc. Natl. Acad. Sci. U.S.A. 101 (52): 18087–92. doi:10.1073/pnas.0404504102. PMC 535800. PMID 15601778. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=535800. 
• Gulberti S, Lattard V, Fondeur M, et al. (2005). "Phosphorylation and sulfation of oligosaccharide substrates critically influence the activity of human beta1,4-galactosyltransferase 7 (GalT-I) and beta1,3-glucuronosyltransferase I (GlcAT-I) involved in the biosynthesis of the glycosaminoglycan-protein linkage region of proteoglycans". J. Biol. Chem. 280 (2): 1417–25. doi:10.1074/jbc.M411552200. PMID 15522873. 
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The Status, Quality, and Expansion of the NIH Full-Length cDNA Project: The Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=528928. 
• Gulberti S, Fournel-Gigleux S, Mulliert G, et al. (2003). "The functional glycosyltransferase signature sequence of the human beta 1,3-glucuronosyltransferase is a XDD motif". J. Biol. Chem. 278 (34): 32219–26. doi:10.1074/jbc.M207899200. PMID 12794088. 
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=139241. 
• Kitagawa H, Taoka M, Tone Y, Sugahara K (2001). "Human glycosaminoglycan glucuronyltransferase I gene and a related processed pseudogene: genomic structure, chromosomal mapping and characterization". Biochem. J. 358 (Pt 3): 539–46. doi:10.1042/0264-6021:3580539. PMC 1222090. PMID 11535117. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1222090. 
• Pedersen LC, Tsuchida K, Kitagawa H, et al. (2000). "Heparan/chondroitin sulfate biosynthesis. Structure and mechanism of human glucuronyltransferase I". J. Biol. Chem. 275 (44): 34580–5. doi:10.1074/jbc.M007399200. PMID 10946001. 
• Ouzzine M, Gulberti S, Netter P, et al. (2000). "Structure/function of the human Ga1beta1,3-glucuronosyltransferase. Dimerization and functional activity are mediated by two crucial cysteine residues". J. Biol. Chem. 275 (36): 28254–60. doi:10.1074/jbc.M002182200. PMID 10842173. 
• Tone Y, Kitagawa H, Imiya K, et al. (1999). "Characterization of recombinant human glucuronyltransferase I involved in the biosynthesis of the glycosaminoglycan-protein linkage region of proteoglycans". FEBS Lett. 459 (3): 415–20. doi:10.1016/S0014-5793(99)01287-9. PMID 10526176. 
• Herman T, Horvitz HR (1999). "Three proteins involved in Caenorhabditis elegans vulval invagination are similar to components of a glycosylation pathway". Proc. Natl. Acad. Sci. U.S.A. 96 (3): 974–9. doi:10.1073/pnas.96.3.974. PMC 15335. PMID 9927678. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=15335.