Singlet and triplet absorption spectra of carotenoids bound in the reaction centers of Rhodopseudomonas sphaeroides R26

FEBS Letters

Bowman, M.K.²  Kolaczkowski, S.¹  Taremi, Shahriar¹  Chadwick, Barry W.¹  Frank, Harry A.¹ 

[1] Department of Chemistry, Box U-60, 215 Glenbrook Road, University of Connecticut, Storrs, CT 06268 USA;Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA

关键词: Carotenoid;    Absorption spectrum;    Singlet state;    Triplet state;    (Rps. sphaeroides);   

DOI  :  10.1016/0014-5793(86)80734-7

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The singlet and triplet state absorption spectra are reported for two carotenoids, methoxyneurosporene and spheroidene, incorporated into the reaction center protein of the photosynthetic bacterial carotenoidless mutant Rhodopseudomonas sphaeroides R26. The spectra for the two different carotenoid molecules are identical suggesting a strong interaction between the protein and the different chromophores. Combined effects of electrochromic band shifts and carotenoid structural changes are invoked to account for the spectral observations.

【 授权许可】

Unknown