FUT5 ( alpha -1, 3-fucosyltransferase 5; also Fuc-TV) is a 43 kDa member of the glycosyltransferase 10 family. It is responsible for the terminal step in the synthesis of Lex, sialyl‑Lex, and Lea antigens. This is accomplished by the transfer of fucose to preexisting LacNAc or sialyl-LacNAc structures. Human FUT5 is 374 amino acids (aa) in length. It is a type II transmembrane Golgi glycoprotein with a C-terminal lumenal domain (aa’s 35-374). The catalytic domain spans aa’s 77-374, while the acceptor-binding motif includes aa’s 120-126. FUT5 is the product of a single exon gene. Thus, there are no splice variants. FUT5 only occurs in primates; there is no rodent ortholog.
| Uniprot | |
| Product By Gene ID | 2525 |
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