The question of the intermediate state P+Chl‐in bacterial photosynthesis

FEBS Letters

Holten, Dewey¹  Parson, William W.¹  Kirmaier, Christine¹ 

[1] Department of Chemistry, Washington University, St. Louis, MO 63130 USA

关键词: Bacterial photosynthesis;    Reaction center;    Early intermediate;    Bacteriochlorophyll;    Bacteriopheophytin;    Quinone;   

DOI  :  10.1016/0014-5793(85)80744-4

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

In bacterial photosynthesis it has been proposed that an electron is transferred from the excited singlet state (P∗) of theprimary electron donor first to a bacteriochlorophyll (BChl) molecule, generating a P⁺Chl charge-transfer state, and that BChl^-subsequently (4–7 ps) transfers an electron to a bacteriopheophytin molecule. Here we review the evidence for and against the intermediacy of P⁺BChl^- and present picosecond transient absorption and kinetic data that bear on this point. We conclude that there is no convincing evidence that P⁺BChl is a kinetically or spectrally resolved intermediary state in the charge separation process.

【 授权许可】

Unknown