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2-Chloromercuri 4,6-dinitrophenol inhibited photosystem I mediated photochemical reactions of Euphorbia hirta chloroplasts. The compound inhibited cyclic photophosphorylation and NADP reduction (in the presence of dichlorophenol indophenol and ascorbate couple) at concentrations as low as 10?6m. At higher concentrations (above 10?4m), however, it affected all NADP reductions but still showed negligible effect on ferricyanide reduction or noncyclic photophosphorylation. The compound may be used as an inhibitor of cyclic photophosphorylation. 相似文献
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The action of 2:4-dinitrophenol on oxidative phosphorylation 总被引:18,自引:13,他引:5
JUDAH JD 《The Biochemical journal》1951,49(3):271-285
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Among various metabolic inhibitors tested, only 2, 4-dinitrophenol inhibited the growth of Bordetella pertussis in chick tracheal organ culture at concentrations nontoxic both for bacterial organisms and for ciliary motility of the tracheal fragments. Although this effect of 2, 4-dinitrophenol was reversible in its early stage, longer treatment with this inhibitor resulted in an irreversible inhibition of bacterial growth due to secondary damage of the tracheal fragments. From these observations, it was postulated that the energy required for bacterial growth might be derived from cellular metabolism sensitive to inhibition with 2, 4-dinitrophenol. 相似文献
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