Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (6): 989-994.doi: 10.1007/s40242-018-8105-2

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Surfactant Effects on the Permeability of Photosynthetic Membrane from Rhodobacter sphaeroides 2.4.1 Probed by Electrochromic Shift of Endogenous Carotenoids

ZHOU Xuan, YU Jie, WANG Peng, ZHANG Jianping   

  1. Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
  • Received:2018-04-04 Online:2018-12-01 Published:2018-06-11
  • Contact: WANG Peng E-mail:wpeng@iccas.ac.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21273282, 21673289, 21673288, 21173265).

Abstract: Four surfactants, sodium cholate(SC), n-dodecyl-β-D-maltopyranoside(DDM), lauryldimethylamine oxide(LDAO) and Triton X-100(TX), which are generally used in photosynthetic pigment-protein complexes preparation, were studied on their interaction with photosynthetic membrane from Rhodobacter sphaeroides 2.4.1 by electrochromic absorption band-shift of endogenous carotenoids and by vesicle size measurements as well. The surfactant critical micelle concentration(cmc) was found to be negatively correlated with the capability of enhancing the permeability of photosynthetic membranes to proton, and more elaborated model of surfactants interacting with membranes was obtained. The electrochromic absorption band-shift measurement might develop into a useful tool to evaluate the effects of surfactants on various membranes.

Key words: Surfactant, Photosynthetic membrane, Electrochromic effect, Carotenoid, Permeability