Protein
Poly(ribitol-phosphate) beta-N-acetylglucosaminyltransferase TarS
Organism
Staphylococcus aureus (strain MW2)
Function
Attaches beta-O-GlcNAc (beta-O-N-acetyl-D-glucosamine) residues to the C4 position of poly(RboP)-wall teichoic acids (WTAs). Prefers UDP-GlcNAc as a donor substrate and is specific for poly(ribitol phosphate) WTAs. Can also use UDP-Glc and UDP-GalNAc, but not UDP-galactose or UDP-glucuronic acid. Mediates beta-lactam resistance in methicillin resistant Staphylococcus aureus (MRSA) strains.
Similarity
Belongs to the glycosyltransferase 2 family.
Sequence
MMKFSVIVPTYNSEKYITELLNSLAKQDFPKTEFEVVVVDDCSTDQTLQIVEKYRNKLNLKVSQLETNSGGPGKPRNVALKQAEGEFVLFVDSDDYINKETLKDAAAFIDEHHSDVLLIKMKGVNGRGVPQSMFKETAPEVTLLNSRIIYTLSPTKIYRTTLLKDNDIYFPEELKSAEDQLFTMKAYLNANRISVLSDKAYYYATKREGEHMSSAYVSPEDFYEVMRLIAVEILNADLEEAHKDQILAEFLNRHFSFSRTNGFSLKVKLEDQPQWINALGDFIQAVPERVDALVMSKLRPLLHYARAKDIDNYRTVEESYRQGQYYRFDIVDGKLNIQFNEGEPYFEGIDIAKPKVKMTAFKFDNHKIVTELTLNEFMIGEGHYDVRLKLHSRNKKHTMYVPLSVNANKQYRFNIMLEDIKAYLPKEKIWDVFLEVQIGTEVFEVRVGNQRNKYAYTAETSALIHLNNDFYRLTPYFTKDFNNISLYFTAITLTDSISLKLKGKNKIILTGLDRGYVFEEGMASVVLKDDMIMGMLSQTSENEVEILLSKDIKKRDFKNIVKLNTAHMTYSLK