Zeaxanthin glucosyltransferase (, crtX (gene)) is an enzyme with systematic name UDP-glucose:zeaxanthin beta-D-glucosyltransferase. This enzyme catalyses the following chemical reaction
2 UDP-glucose + zeaxanthin 2 UDP + zeaxanthin bis(beta-D-glucoside)
The reaction proceeds in two steps with the monoglucoside as an intermediate.
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