BACTERIOCHLOROPHYLL-A CATION RADICAL IN SOLUTION AND IN REACTION CENTERS OF RHODOPSEUDOMONAS-SPHAEROIDES - RESONANCE RAMAN-SCATTERING

被引：31

作者：

LUTZ, M

KLEO, J

机构：

[1] Service de Biophysique, Département de Biologie, Centre d'Etudes Nucléaires de Saclay, 91190 Gif-sur-Yvette

来源：

BIOCHIMICA ET BIOPHYSICA ACTA | 1979年 / 546卷 / 02期

关键词：

(Rhodopseudomonas sphaeroides); Bacteriochlorophyll a; Raman spectroscopy; Reaction center;

D O I：

10.1016/0005-2728(79)90054-9

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Resonance Raman spectra of the π-cation of bacterio-chlorophyll a in solution at 30 K are reported and discussed. Outer C{A figure is presented}C bonds of the pyrroles and the methine bridges are weakened by the ionization, while C{A figure is presented}N and Mg-N bonds remain essentially unaffected. Resonance Raman spectra of reaction centers suggest that the positive charge on P-870+ should be localized on a single bacteriochlorophyll molecule by the lifetime of the scattering process (≈ 10-13 s). © 1979.

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页码：365 / 369

页数：5

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