Crocetin glucosyltransferase

Crocetin glucosyltransferase (, crocetin GTase, UGTCs2) is an enzyme with systematic name UDP-glucose:crocetin 8-O-D-glucosyltransferase. This enzyme catalyses the following chemical reaction


 * (1) UDP-glucose + crocetin $$\rightleftharpoons$$ UDP + beta-D-glucosyl crocetin
 * (2) UDP-glucose + beta-D-glucosyl crocetin $$\rightleftharpoons$$ UDP + bis(beta-D-glucosyl) crocetin
 * (3) UDP-glucose + beta-D-gentiobiosyl crocetin $$\rightleftharpoons$$ UDP + beta-D-gentiobiosyl beta-D-glucosyl crocetin

In Crocus sativus this enzyme esterifies a free carboxyl group of crocetin or crocetin glycosyl ester.