RESONANCE RAMAN STUDIES ON THE STRUCTURE OF BACTERIOCHLOROPHYLL-C IN CHLOROSOMES FROM CHLOROFLEXUS-AURANTIACUS

被引：42

作者：

NOZAWA, T ^{[1
]}

NOGUCHI, T ^{[1
]}

TASUMI, M ^{[1
]}

机构：

[1] UNIV TOKYO,FAC SCI,DEPT CHEM,BUNKYO KU,TOKYO 113,JAPAN

来源：

JOURNAL OF BIOCHEMISTRY | 1990年 / 108卷 / 05期

关键词：

D O I：

10.1093/oxfordjournals.jbchem.a123274

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 chlorosomes isolated from the thermophilic green photosyn-thetic bacterium Chloroflexus aurantiacus have been obtained with several excitation wavelengths from 441.6 to 514.5 nm. Resonance Raman spectra of bacteriochlorophyll (BChl) c isolated from C. aurantiacus cells have also been observed. The C=C stretching frequencies of BChl c in the chlorosomes were found to be at 1,556 (strong) and 1,544 (shoulder) cm-1, which correspond to those expected for the 5-coordinated BChl c. The C-9 carbonyl resonance Raman frequency was found at 1,642 cm-1, indicating that this group is either hydrogen-bonded to an Mg-coordinated hydroxyl group or coordinated to the Mg ion. © 1990 Copyright, 1990 by the Journal of Biochemistry.

引用

页码：737 / 740

页数：4

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