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. 1991 Nov;41(2):169-74.
doi: 10.1016/0301-4622(91)80016-k.

Inhibition of photophosphorylation and electron transport by N,N-dimethylformamide

C B Pe Na-Valdivia  1 , L Rodriguez-Flores, M T de Gómez-Puyou, B Lotina-Hennsen
Affiliations

Inhibition of photophosphorylation and electron transport by N,N-dimethylformamide

C B Pe Na-Valdivia et al. Biophys Chem. 1991 Nov.

Abstract

The basal electron transport of pea chloroplasts was inhibited by 78% by 7% (v/v) N,N-dimethylformamide; the inhibition was partially reversed by NH4Cl. N,N-Dimethylformamide also inhibited the Pi-ATP exchange, ATP synthesis and to a smaller extent Mg2+-ATPase activity. Light induced proton uptake was not affected by up to 30% (v/v) N,N-dimethylformamide. Uncoupled electron transport in photosystem II was inhibited to a larger extent by N,N-dimethylformamide than in photosystem I. These results indicate that N,N-dimethylformamide acts as an inhibitor of energy transfer and electron transport.

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