The coupling of ethylene biosynthesis to a transmembrane, electrogenic proton flux

FEBS Letters

John, Philip¹ 

[1] Department of Agricultural Botany, University of Reading, Whiteknights, Reading, RG6 2AS, England

关键词: Ethylene biosynthesis;    ACC;    Membrane potential;    Proton flux;    ACC;    1-aminocyclopropane-1-carboxylic acid;    DNP;    2;    4-dinitrophenol;   

DOI  :  10.1016/0014-5793(83)80366-4

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

It is proposed that the reactions which lead to the generation of ethylene from 1-aminocyclopropane—1-carboxylic acid are arranged asymmetrically in the plasma membrane of plant cells so that ethylene biosynthesis is coupled to an inwardly directed, electrogenic flow of protons. According to this model a membrane potential (outside positive is required for ethylene biosynthesis. This proposed requirement is indicated by previous observations of a marked sensitivity of ethylene biosynthesis to the protonophore 2,4-dinitrophenol, and by its unusually strict dependence on membrane integrity.

【 授权许可】

Unknown