title: Amaranthin in feather cockscombs is synthesized via glucuronylation at the cyclo-DOPA glucoside step in the betacyanin biosynthetic pathway.
abstract: Uridine 5'-diphosphate (UDP)-glucuronic acid: cyclo-DOPA 5-glucoside glucuronosyltransferase activity was detected in a crude extract prepared from the purple flowers of feather cockscombs. This suggests that the glucuronic acid moiety of amaranthin and its derivatives may be introduced at the cyclo-DOPA glucoside step, but not at the betanidin glucoside step.
authors.affiliation: Department of Biotechnology, Faculty of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan.
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Sasaki
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Abe
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Wada
authors.forename: Takatoshi
authors.initials: T
authors.lastname: Koda
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Goda
authors.forename: Taiji
authors.initials: T
authors.lastname: Adachi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Ozeki
mesh_terms: D050859:Betacyanins / Q000378:metabolism*; D034762:Celosia / Q000201:enzymology / Q000378:metabolism*; D004295:Dihydroxyphenylalanine / Q000378:metabolism*; D005960:Glucosides / Q000378:metabolism; D020723:Glucuronic Acid / Q000378:metabolism*; D014453:Glucuronosyltransferase / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D050859:Betacyanins; D005960:Glucosides; C494225:cyclo-dopa; C494261:amaranthin betacyanin; D004295:Dihydroxyphenylalanine; D020723:Glucuronic Acid; D014453:Glucuronosyltransferase