Crocetin glucosyltransferase

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Crocetin glucosyltransferase
Identifiers
EC no. 2.4.1.271
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Crocetin glucosyltransferase (EC 2.4.1.271, crocetin GTase, UGTCs2) is an enzyme with systematic name UDP-glucose:crocetin 8-O-D-glucosyltransferase. [1] [2] This enzyme catalyses the following chemical reaction

(1) UDP-glucose + crocetin UDP + beta-D-glucosyl crocetin
(2) UDP-glucose + beta-D-glucosyl crocetin UDP + bis(beta-D-glucosyl) crocetin
(3) UDP-glucose + beta-D-gentiobiosyl crocetin UDP + beta-D-gentiobiosyl beta-D-glucosyl crocetin

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

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References

  1. ↑ Côté F, Cormier F, Dufresne C, Willemot C (2000). "Properties of a glucosyltransferase involved in crocin synthesis". Plant Sci. 153: 55–63. doi:10.1016/S0168-9452(99)00248-4.
  2. ↑ Moraga AR, Nohales PF, Pérez JA, Gómez-Gómez L (October 2004). "Glucosylation of the saffron apocarotenoid crocetin by a glucosyltransferase isolated from Crocus sativus stigmas". Planta. 219 (6): 955–66. doi:10.1007/s00425-004-1299-1. PMID   15605174.
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