A MONOMERIC BACTERIOCHLOROPHYLL TRIPLET-STATE ((3)B) IN REACTION CENTERS OF RHODOBACTER-SPHAEROIDES R26, STUDIED BY ABSORPTION-DETECTED MAGNETIC-RESONANCE

被引：9

作者：

ANGERHOFER, A

AUST, V

机构：

[1] 3. Physikalisches Institut, Universität Stuttgart, W-7000 Stuttgart 80

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY | 1993年 / 20卷 / 2-3期

关键词：

PHOTOSYNTHESIS; REACTION CENTER; TRIPLET STATE; BACTERIOCHLOROPHYLL; ABSORPTION-DETECTED MAGNETIC RESONANCE;

D O I：

10.1016/1011-1344(93)80141-U

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：

Using absorption-detected magnetic resonance, a new triplet state was observed in reaction centres of Rhodobacter sphaeroides R26 at 7 K. Its zero-field splitting parameters Absolute value of D = 220.5 X 10(-4) cm-1 and Absolute value of E = 65.4 X 10(-4) cm-1, its spin polarization and its microwave-induced absorption spectrum indicate that it belongs to one of the accessory monomeric bacteriochlorophyll molecules and that it is populated through the same excitation path as the primary donor triplet P-3(870), via the radical pair [P-3(870) +H-].

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页码：127 / 132

页数：6

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