Function
Involved in the production of glycogen and alpha-glucan via the TreS-Pep2 branch involved in the biosynthesis of maltose-1-phosphate (M1P), and probably in the osmoprotection via the biosynthesis of trehalose (Ref.4, PubMed:27513637). Catalyzes the transfer of glucose from UDP-glucose (UDP-Glc) to glucose-6-phosphate (Glc-6-P) to form trehalose-6-phosphate (Ref.4). ADP-Glc, CDP-Glc, GDP-Glc and TDP-Glc are also glucosyl donors, however, when the pyrimidine sugar nucleotides (CDP-Glc, TDP-Glc and UDP-Glc) are used as substrates, there is an absolute requirement for a high molecular weight polyanion for activity (Ref.4).
Sequence
MSPESGHETISGTSDFVVVANRLPVDLERLPDGTTRWKRSPGGLVTALEPLLRKRRGSWIGWAGVADSDEEPIVQDGLQLHPVRLSADDVAKYYEGFSNATLWPLYHDLIVKPEYHREWWDRYVEVNRRFAEATARAAAEGATVWIQDYQLQLVPKMLRMLRPDVTIGFFLHIPFPPVELFMQMPWRTEIVEGLLGADLVGFHLPGGAQNFLVLSRRLVGANTSRASIGVRSRFGEVQVGFRTVKVGAFPISIDSAELDGKARNRAIRQRARQIRAELGNPRKIMLGVDRLDYTKGIDVRLRALSELLEEKRIKRDDTVLVQLATPSRERVESYIAMREDIERQVGHINGEYGEVGHPIVHYLHRPIPRDELIAFFVAADVMLVTPLRDGMNLVAKEYVACRSDLGGALVLSEFTGAAAELRQAYLVNPHDLEGVKDKIEAAVNQNPEEGKRRMRALRRQVLAHDVDRWARSFLDALAATGETGDSGVTGESTPAPESDSGSF