PHOTOACOUSTIC CALORIMETRIC STUDY OF THE CONVERSION OF RHODOPSIN AND ISORHODOPSIN TO LUMIRHODOPSIN

被引:39
作者
MARR, K [1 ]
PETERS, KS [1 ]
机构
[1] UNIV COLORADO,DEPT CHEM & BIOCHEM,BOULDER,CO 80309
关键词
D O I
10.1021/bi00219a013
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
The enthalpy and volume changes for the conversion of rhodopsin and isorhodopsin to lumirhodopsin have been investigated by time-resolved photoacoustic calorimetry. The conversion of rhodopsin to lumirhodopsin is endothermic by 3.9 +/- 5.9 kcal/mol and is accompanied by an increase in volume of 29.1 +/- 0.8 mL/mol. The lumirhodopsins produced from rhodopsin and isorhodopsin are energetically equivalent.
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页码:1254 / 1258
页数:5
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