Function
Processive glucosyltransferase involved in the biosynthesis of both the bilayer- and non-bilayer-forming membrane glucolipids. Is able to successively transfer two glucosyl residues to diacylglycerol (DAG), thereby catalyzing the formation of beta-monoglucosyl-DAG (3-O-(beta-D-glucopyranosyl)-1,2-diacyl-sn-glycerol) and beta-diglucosyl-DAG (3-O-(beta-D-glucopyranosyl-beta-(1->6)-D-glucopyranosyl)-1,2-diacyl-sn-glycerol). Beta-diglucosyl-DAG is the predominant glycolipid found in Bacillales and is also used as a membrane anchor for lipoteichoic acid (LTA). In vitro, UgtP can also use cholesterol, cholesterolglucoside and the fluorescent substrate 6-(N-7-nitrobenz-2-oxa-1,3-diazol-4-yl)-amino-caproyl-sphingosine (NBD-ceramide) as sugar acceptors, but it can only use UDP-glucose as sugar donor.
Sequence
MVTQNKKILIITGSFGNGHMQVTQSIVNQLNDMNLDHLSVIEHDLFMEAHPILTSICKKWYINSFKYFRNMYKGFYYSRPDKLDKCFYKYYGLNKLINLLIKEKPDLILLTFPTPVMSVLTEQFNINIPVATVMTDYRLHKNWITPYSTRYYVATKETKQDFIDVGIDPSTVKVTGIPIDNKFETPINQKQWLIDNNLDPDKQTILMSAGAFGVSKGFDTMITDILAKSANAQVVMICGKSKELKRSLTAKFKSNENVLILGYTKHMNEWMASSQLMITKPGGITITEGFARCIPMIFLNPAPGQELENALYFEEKGFGKIADTPEEAIKIVASLTNGNEQLTNMISTMEQDKIKYATQTICRDLLDLIGHSSQPQEIYGKVPLYARFFVK