KEGG   ENZYME: 2.4.1.271Help
Entry
EC 2.4.1.271                Enzyme                                 

Name
crocetin glucosyltransferase;
crocetin GTase;
UGTCs2;
UGT75L6;
UDP-glucose:crocetin glucosyltransferase;
UDP-glucose:crocetin 8-O-D-glucosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
UDP-alpha-D-glucose:crocetin 8-O-D-glucosyltransferase
Reaction(IUBMB)
(1) UDP-alpha-D-glucose + crocetin = UDP + beta-D-glucosyl crocetin [RN:R09757];
(2) UDP-alpha-D-glucose + beta-D-glucosyl crocetin = UDP + bis(beta-D-glucosyl) crocetin [RN:R09758];
(3) UDP-alpha-D-glucose + beta-D-gentiobiosyl crocetin = UDP + beta-D-gentiobiosyl beta-D-glucosyl crocetin [RN:R09759]
Reaction(KEGG)
Substrate
UDP-alpha-D-glucose [CPD:C00029];
crocetin [CPD:C08588];
beta-D-glucosyl crocetin [CPD:C19867];
beta-D-gentiobiosyl crocetin [CPD:C19869]
Product
UDP [CPD:C00015];
beta-D-glucosyl crocetin [CPD:C19867];
bis(beta-D-glucosyl) crocetin [CPD:C19868];
beta-D-gentiobiosyl beta-D-glucosyl crocetin [CPD:C17513]
Comment
In the plants Crocus sativus and Gardenia jasminoides this enzyme esterifies a free carboxyl group of crocetin and some crocetin glycosyl esters. The enzyme from Gardenia can also form glucosyl esters with 4-coumarate, caffeate and ferulate [3].
History
EC 2.4.1.271 created 2011
Reference
1
  Authors
Cote, F., Cormier, F., Dufresne, C. and Willemot, C.
  Title
Properties of a glucosyltransferase involved in crocin synthesis.
  Journal
Plant Sci. 153 (2000) 55-63.
Reference
2  [PMID:15605174]
  Authors
Moraga AR, Nohales PF, Perez JA, Gomez-Gomez L
  Title
Glucosylation of the saffron apocarotenoid crocetin by a glucosyltransferase isolated from Crocus sativus stigmas.
  Journal
Planta. 219 (2004) 955-66.
  Sequence
Reference
3  [PMID:22569263]
  Authors
Nagatoshi M, Terasaka K, Owaki M, Sota M, Inukai T, Nagatsu A, Mizukami H
  Title
UGT75L6 and UGT94E5 mediate sequential glucosylation of crocetin to crocin in Gardenia jasminoides.
  Journal
FEBS. Lett. 586 (2012) 1055-61.
  Sequence
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 

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