Protein Information

Name cytochrome P450 (protein family or complex)
Synonyms cytochrome P450; cytochrome P 450; CYP450; CYP 450

Compound Information

Name flurprimidol
CAS α-(1-methylethyl)-α-[4-(trifluoromethoxy)phenyl]-5-pyrimidinemethanol

Reference List

PubMed Abstract RScore(About this table)
15012200 Rademacher W: GROWTH RETARDANTS: Effects on Gibberellin Biosynthesis and Other Metabolic Pathways. Annu Rev Plant Physiol Plant Mol Biol. 2000 Jun;51:501-531.

To date, four different types of such inhibitors are known: (a) Onium compounds, such as chlormequat chloride, mepiquat chloride, chlorphonium, and AMO-1618, which block the cyclases copalyl-diphosphate synthase and ent-kaurene synthase involved in the early steps of GA metabolism. (b) Compounds with an N-containing heterocycle, e.g. ancymidol, flurprimidol, tetcyclacis, paclobutrazol, uniconazole-P, and inabenfide.
These retardants block cytochrome P450-dependent monooxygenases, thereby inhibiting oxidation of ent-kaurene into ent-kaurenoic acid. (c) Structural mimics of 2-oxoglutaric acid, which is the co-substrate of dioxygenases that catalyze late steps of GA formation.
1(0,0,0,1) Details
12231743 Jennings JC, Coolbaugh RC, Nakata DA, West CA: Characterization and Solubilization of Kaurenoic Acid Hydroxylase from Gibberella fujikuroi. Plant Physiol. 1993 Mar;101(3):925-930.

Flavin adenine dinucleotide and the chloride salts of several monovalent cations stimulated the conversion of ent-kaurenoic acid to these products, whereas CO and a number of known inhibitors of cytochrome P-450-dependent reactions, including paclobutrazol, tetcyclacis, BAS 111.W, flurprimidol, triarimol, metyrapone, and 1-phenylimida-zole, significantly reduced kaurenoic acid hydroxylase activity.
32(0,1,1,2) Details