doi: 10.1111/j.1432-1033.1978.tb20960.x.
Circular-dichroism studies of the cytochrome b-c1 complex of Saccharomyces cerevisiae
- PMID: 214303
- DOI: 10.1111/j.1432-1033.1978.tb20960.x
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Circular-dichroism studies of the cytochrome b-c1 complex of Saccharomyces cerevisiae
Eur J Biochem.
.
Free article
Abstract
1. Circular dichroism studies on the Soret region of the cytochrome b-c1 complex of yeast reveal a change in the dichroism of cytochrome c1 depending on the redox state of cytochrome b, indicating a conformational interaction between both cytochromes. 2. This interaction is not influenced by binding of the inhibitor antimycin A to the complex, so that the interaction does not appear to be involved in the mechanism of electron transport through the complex. 3. Antimycin A binding causes a complex set of changes in the CD spectrum of the complex, which can be attributed to a severe and specific distortion of the environment of the chromophore of cytochrome b.
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