Protein
Putative polypeptide N-acetylgalactosaminyltransferase 9
Organism
Drosophila melanogaster
Function
Isoform B: N-acetylgalactosaminyltransferase which preferentially O-glycosylates positively charge substrates. O-glycosylates mucin-like protein Sgs3 in the salivary gland. By regulating the O-glycosylation of secretory cargo proteins, plays a role in the morphology and maturation of salivary gland secretory granules.
Similarity
Belongs to the glycosyltransferase 2 family. GalNAc-T subfamily.
Sequence
MAFIWRRRSTTIVKLVAFALAIWFCIAFLVYTDDTRRRAAQEGAGASGAGSAPGVGGGAGGLGDPIALALRNEPAGEDFGINGNVIGGGGQKQAHDEADIPPTVGKHKADLQAERMRKKAAEQPKKKPQEDSKKVIDPPANFEENPGELGKPVRLPKEMSDEMKKAVDDGWTKNAFNQYVSDLISVHRTLPDPRDAWCKDEARYLTNLPKTDVIICFHNEAWTVLLRTVHSVLDRSPEHLIGKIILVDDYSDMPHLKRQLEDYFAAYPKVQIIRGQKREGLIRARILGANHAKSPVLTYLDSHCECTEGWLEPLLDRIARNSTTVVCPVIDVISDETLEYHYRDSGGVNVGGFDWNLQFSWHPVPERERKRHNSTAEPVYSPTMAGGLFSIDREFFDRLGTYDSGFDIWGGENLELSFKTWMCGGTLEIVPCSHVGHIFRKRSPYKWRSGVNVLKKNSVRLAEVWMDEYSQYYYHRIGNDKGDWGDVSDRRKLRNDLKCKSFKWYLDNIYPELFIPGDSVAHGEIRNLGYGGRTCLDAPAGKKHQKKAVGTYPCHRQGGNQYWMLSKAGEIRRDDSCLDYAGKDVTLFGCHGGKGNQFWTYRENTKQLHHGTSGKCLAISESKDKLLMEECSASLSRQQWTLENYDSSKL