GALNT2

Polypeptide N-acetylgalactosaminyltransferase 2
PDB rendering based on 2ffu.
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 2FFU​, 2FFV​, 4D0T​, 4D0Z​, 4D11​, 5AJN​, 5AJO​, 5AJP​
Identifiers
Symbols	GALNT2 ; GalNAc-T2
External IDs	OMIM: 602274 MGI: 894694 HomoloGene: 3297 GeneCards: GALNT2 Gene
EC number	2.4.1.41
Gene ontology Molecular function • polypeptide N-acetylgalactosaminyltransferase activity • protein binding • manganese ion binding • carbohydrate binding Cellular component • Golgi membrane • Golgi apparatus • Golgi stack • membrane • integral component of Golgi membrane • Golgi cisterna membrane • perinuclear region of cytoplasm • extracellular exosome Biological process • immunoglobulin biosynthetic process • protein O-linked glycosylation • O-glycan processing • protein O-linked glycosylation via serine • protein O-linked glycosylation via threonine • post-translational protein modification • cellular protein metabolic process Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	2590	108148
Ensembl	ENSG00000143641	ENSMUSG00000089704
UniProt	Q10471	Q6PB93
RefSeq (mRNA)	NM_001291866	NM_139272
RefSeq (protein)	NP_001278795	NP_644678
Location (UCSC)	Chr 1: 230.06 – 230.28 Mb	Chr 8: 124.23 – 124.35 Mb
PubMed search

Polypeptide N-acetylgalactosaminyltransferase 2 is an enzyme that in humans is encoded by the GALNT2 gene.^[1][2][3]

This gene encodes polypeptide N-acetylgalactosaminyltransferase 2, a member of the GalNAc-transferases family. This family transfers an N-acetyl galactosamine to the hydroxyl group of a serine or threonine residue in the first step of O-linked oligosaccharide biosynthesis. The localization site of this particular enzyme is preponderantly the trans-Golgi.^[4] Individual GalNAc-transferases have distinct activities and initiation of O-glycosylation in a cell is regulated by a repertoire of GalNAc-transferases.^[3]

References

1. Bennett EP, Weghuis DO, Merkx G, van Kessel AG, Eiberg H, Clausen H (Jul 1998). "Genomic organization and chromosomal localization of three members of the UDP-N-acetylgalactosamine: polypeptide N-acetylgalactosaminyltransferase family". Glycobiology 8 (6): 547–55. doi:10.1093/glycob/8.6.547. PMID 9592121.
2. White T, Bennett EP, Takio K, Sorensen T, Bonding N, Clausen H (Dec 1995). "Purification and cDNA cloning of a human UDP-N-acetyl-alpha-D-galactosamine:polypeptide N-acetylgalactosaminyltransferase". J Biol Chem 270 (41): 24156–65. doi:10.1074/jbc.270.41.24156. PMID 7592619.
3. "Entrez Gene: GALNT2 UDP-N-acetyl-alpha-D-galactosamine:polypeptide N-acetylgalactosaminyltransferase 2 (GalNAc-T2)".
4. "African Swine Fever Virus Causes Microtubule-Dependent Dispersal of trans-Golgi Network" (PDF).

Further reading

• Bennett EP, Hassan H, Clausen H (1996). "cDNA cloning and expression of a novel human UDP-N-acetyl-alpha-D-galactosamine. Polypeptide N-acetylgalactosaminyltransferase, GalNAc-t3.". J. Biol. Chem. 271 (29): 17006–12. doi:10.1074/jbc.271.29.17006. PMID 8663203.
• Wandall HH, Hassan H, Mirgorodskaya E; et al. (1997). "Substrate specificities of three members of the human UDP-N-acetyl-alpha-D-galactosamine:Polypeptide N-acetylgalactosaminyltransferase family, GalNAc-T1, -T2, and -T3.". J. Biol. Chem. 272 (38): 23503–14. doi:10.1074/jbc.272.38.23503. PMID 9295285.
• Müller S, Goletz S, Packer N; et al. (1997). "Localization of O-glycosylation sites on glycopeptide fragments from lactation-associated MUC1. All putative sites within the tandem repeat are glycosylation targets in vivo.". J. Biol. Chem. 272 (40): 24780–93. doi:10.1074/jbc.272.40.24780. PMID 9312074.
• Röttger S, White J, Wandall HH; et al. (1998). "Localization of three human polypeptide GalNAc-transferases in HeLa cells suggests initiation of O-linked glycosylation throughout the Golgi apparatus.". J. Cell. Sci. 111 (1): 45–60. PMID 9394011.
• Mattu TS, Pleass RJ, Willis AC; et al. (1998). "The glycosylation and structure of human serum IgA1, Fab, and Fc regions and the role of N-glycosylation on Fc alpha receptor interactions.". J. Biol. Chem. 273 (4): 2260–72. doi:10.1074/jbc.273.4.2260. PMID 9442070.
• Iwasaki H, Zhang Y, Tachibana K; et al. (2003). "Initiation of O-glycan synthesis in IgA1 hinge region is determined by a single enzyme, UDP-N-acetyl-alpha-D-galactosamine:polypeptide N-acetylgalactosaminyltransferase 2.". J. Biol. Chem. 278 (8): 5613–21. doi:10.1074/jbc.M211097200. PMID 12438318.
• 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.
• Marcos NT, Cruz A, Silva F; et al. (2003). "Polypeptide GalNAc-transferases, ST6GalNAc-transferase I, and ST3Gal-transferase I expression in gastric carcinoma cell lines". J. Histochem. Cytochem. 51 (6): 761–71. doi:10.1177/002215540305100607. PMID 12754287.
• Kinarsky L, Suryanarayanan G, Prakash O; et al. (2004). "Conformational studies on the MUC1 tandem repeat glycopeptides: implication for the enzymatic O-glycosylation of the mucin protein core". Glycobiology 13 (12): 929–39. doi:10.1093/glycob/cwg109. PMID 12925576.
• Ota T, Suzuki Y, Nishikawa T; et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
• 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.
• Gregory SG, Barlow KF, McLay KE; et al. (2006). "The DNA sequence and biological annotation of human chromosome 1". Nature 441 (7091): 315–21. doi:10.1038/nature04727. PMID 16710414.