GDP-fucose protein O-fucosyltransferase 1 Tags: Protein.GDP-fucose protein O-fucosyltransferase 1 (POFUT1) is an enzyme responsible for adding fucose sugars in O linkage to serine or threonine residues between the second and third conserved cysteines in EGF-like repeats on the Notch protein. arm q band 11 chromosome 20 EC number 2.4.1.221 EntrezGene 23509 HGNCid 14988 OMIM id 607491 RefSeq NM_172236 symbol POFUT1 UniProt Q9H488 Learn more... Loading...