Home/GT Families/GT27/GALNT18
GALNT18
Homo sapiens · Polypeptide N-acetylgalactosaminyltransferase 18 (EC 2.4.1.41)
GT27Model organism · annotation ≥ 4Fold GT-ARetaining
External resources
Identification and annotation
| CAZy family | GT27 · CAZy entry |
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| Gene symbol | GALNT18 |
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| Synonyms / alternate names | - GALNTL4
- Polypeptide GalNAc transferase 18
- Polypeptide GalNAc transferase-like protein 4
- Polypeptide N-acetylgalactosaminyltransferase-like protein 4
- Protein-UDP acetylgalactosaminyltransferase-like protein 4
- UDP-GalNAc:polypeptide N-acetylgalactosaminyltransferase-like protein 4
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| UniProt accession | Q6P9A2 |
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| NCBI Gene ID | 374378 |
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| Source species | Homo sapiens |
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| Taxonomic domain | Eukaryota |
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| UniProt annotation level | 5 |
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Function and localisation
| Enzyme function | Polypeptide N-acetylgalactosaminyltransferase 18 (EC 2.4.1.41) |
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| Subcellular location | Golgi apparatus membrane |
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Structure and mechanism
| Fold type | GT-A |
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| Catalytic mechanism | Retaining |
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| Cation dependence | Yes (Mn2+) |
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| Oligomeric state | not curated |
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| PDB structures | not curated |
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Donor and acceptor specificity
| Sugar nucleotide donor | UDP-N-acetyl-alpha-D-galactosamine |
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| Donor CCD code(s) | UD2 |
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| Acceptor substrate(s) | - L-seryl-[protein]
- L-threonyl-[protein]
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| Acceptor CCD / GlycoCT | not curated |
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Protein sequences
Full protein sequence
607 aa
MVCTRKTKTLVSTCVILSGMTNIICLLYVGWVTNYIASVYVRGQEPAPDKKLEEDKGDTLKIIERLDHLENVIKQHIQEAPAKPEEAEAEPFTDSSLFAHWGQELSPEGRRVALKQFQYYGYNAYLSDRLPLDRPLPDLRPSGCRNLSFPDSLPEVSIVFIFVNEALSVLLRSIHSAMERTPPHLLKEIILVDDNSSNEELKEKLTEYVDKVNSQKPGFIKVVRHSKQEGLIRSRVSGWRAATAPVVALFDAHVEFNVGWAEPVLTRIKENRKRIISPSFDNIKYDNFEIEEYPLAAQGFDWELWCRYLNPPKAWWKLENSTAPIRSPALIGCFIVDRQYFQEIGLLDEGMEVYGGENVELGIRVWQCGGSVEVLPCSRIAHIERAHKPYTEDLTAHVRRNALRVAEVWMDEFKSHVYMAWNIPQEDSGIDIGDITARKALRKQLQCKTFRWYLVSVYPEMRMYSDIIAYGVLQNSLKTDLCLDQGPDTENVPIMYICHGMTPQNVYYTSSQQIHVGILSPTVDDDDNRCLVDVNSRPRLIECSYAKAKRMKLHWQFSQGGPIQNRKSKRCLELQENSDLEFGFQLVLQKCSGQHWSITNVLRSLAS
Catalytic domain sequence
154 aa
SIVFIFVNEALSVLLRSIHSAMERTPPHLLKEIILVDDNSSNEELKEKLTEYVDKVNSQKPGFIKVVRHSKQEGLIRSRVSGWRAATAPVVALFDAHVEFNVGWAEPVLTRIKENRKRIISPSFDNIKYDNFEIEEYPLAAQGFDWELWCRYLN
