Zeaxanthin glucosyltransferase

Zeaxanthin glucosyltransferase (EC 2.4.1.276, crtX (gene)) is an enzyme with systematic name UDP-glucose:zeaxanthin beta-D-glucosyltransferase.^[1] This enzyme catalyses the following chemical reaction

2 UDP-glucose + zeaxanthin ${\displaystyle \rightleftharpoons }$ 2 UDP + zeaxanthin bis(beta-D-glucoside)

The reaction proceeds in two steps with the monoglucoside as an intermediate.