Comparison of carotenoid and bacteriochlorophyll calibrations of the membrane potential in chromatophores of Rhodopseudomonas capsulata

FEBS Letters

Sybesma, Christiaan¹  Symons, Marc¹ 

[1] Laboratorium voor Biofysica, Vrije Universiteit Brüssel, Pleinlaan 2, 1050 Brüssel, Belgium

关键词: Carotenoid absorbance change;    Bacteriochlorophyll change;    Membrane potential;    Diffusion potential;    Photosynthesis;    DAD;    diaminodurene;   

DOI  :  10.1016/0014-5793(84)80621-3

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

An extensive comparison of bacteriochlorophyll and carotenoid absorbance changes shows that, under optimal conditions, these two intrinsic probes yield essentially the same value for the light-induced membrane potential. The bacteriochlorophyll changes appear to be more sensitive to ageing than the carotenoids. The effect of prolonged sonication on the diffusion potential-induced bacteriochlorophyll and the carotenoid changes suggests that this treatment decreases the effective thickness of the membrane.

【 授权许可】

Unknown