6533b854fe1ef96bd12af526
RESEARCH PRODUCT
Competitive interaction of three peroxidizing herbicides with the binding of 3H acifluorfen to corn etioplast membranes
René ScallaMichel MatringeRené MornetRina VarsanoNoël Magninsubject
Niacinamide0106 biological sciencesOxidoreductases Acting on CH-CH Group DonorsStereochemistryBiophysics[SDV.BC]Life Sciences [q-bio]/Cellular BiologyAcifluorfenBinding CompetitiveZea mays01 natural sciencesBiochemistry03 medical and health scienceschemistry.chemical_compoundEtioplastStructural BiologyDiphenyletherGeneticsBinding site[SDV.BC] Life Sciences [q-bio]/Cellular BiologyMolecular BiologyComputingMilieux_MISCELLANEOUS030304 developmental biologychemistry.chemical_classificationOxadiazoles0303 health sciencesBinding SitesTrifluoromethylHerbicidesCell MembraneCell BiologyPlantsBindingProtoporphyrinogen IXProtoporphyrinogen oxidaseEnzymeMembranechemistryDiuronNitrobenzoatesPyrazolesProtoporphyrinogen oxidaseHerbicideOxidoreductases010606 plant biology & botanydescription
AbstractThe specific binding of the herbicide acifluorfen 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid to corn etioplast membranes is competitively inhibited by protoporphyrinogen IX, the substrate of protoporphyrinogen oxidase. Three other peroxidizing molecules, oxadiazon [5-ter-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2-one], LS 82556 [(S)3-N-(methylbenzyl)carbamoyl-5-propionyl-2,6-lutidine], and M&B 39279 [5-amino-4-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazol], also compete with acifluorfen for its binding site. The four herbicides thus bind to the same site, or to closely located sites, on the enzyme protoporphyrinogen oxidase.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-10-15 |