EC - Luteolin-7-O-diglucuronide 4'-O-glucuronosyltransferase

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DE   Luteolin-7-O-diglucuronide 4'-O-glucuronosyltransferase.
CA   UDP-alpha-D-glucuronate + luteolin 7-O-(beta-D-glucuronosyl-(1->2)-beta-
CA   D-glucuronide) = UDP + luteolin 7-O-(beta-D-glucuronosyl-(1->2)-beta-D-
CA   glucuronide)-4'-O-beta-D-glucuronide.
CC   -!- The enzyme participates in the biosynthesis of luteolin
CC       triglucuronide, the major flavone found in the photosynthetically-
CC       active mesophyll of the primary leaves of Secale cereale (rye).