STUDY OF CYTOCHROMES C3 FROM DESULFOVIBRIO-VULGARIS (HILDENBOROUGH) AND DESULFOVIBRIO-DESULFURICANS (NORWAY) BY DIFFERENTIAL PULSE POLAROGRAPHY AND SPECTROELECTROCHEMICAL METHOD

被引:51
作者
BIANCO, P [1 ]
HALADJIAN, J [1 ]
机构
[1] UNIV PROVENCE, CHIM & ELECTROCHIM COMPLEXES LAB, F-13331 MARSEILLE 3, FRANCE
关键词
(Desulfovibrio); Cytochrome c[!sub]3[!/sub; Differential pulse polarography;
D O I
10.1016/0005-2728(79)90116-6
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
Cytochromes c3 from D. vulgaris (Hildenborough strain) and D. desulfuricans (Norway strain) were studied by differential pulse polarography and spectroelectrochemical method. Both cytochromes exhibit 2 reduction potential values Eh .apprxeq. -0.25 and -0.34 V (D. vulgaris), Eh .apprxeq. -0.16 and -0.34 V (D. desulfuricans). Titrations by dithionite and controlled potential electrolysis coupled with polarography and spectrophotometry suggest that in both cases electronic exchanges are rapid.
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页码:86 / 93
页数:8
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