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Electron Transport and Oxidative Phosphorylation

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Figure 20.9<br />

Typical visible<br />

absorption spectra of<br />

cytochromes. (a)<br />

Cytochrome c, reduced<br />

spectrum; (b)<br />

cytochrome c, oxidized<br />

spectrum; (c) the<br />

difference spectrum: (a)<br />

minus (b); (d) beef heart<br />

mitochondrial particles:<br />

room temperature<br />

difference (reduced<br />

minus oxidized)<br />

spectrum; (e) beef heart<br />

submitochondrial<br />

particles: same as (d)<br />

but at 77 K. α- <strong>and</strong> β-<br />

b<strong>and</strong>s are labeled, <strong>and</strong><br />

in (d) <strong>and</strong> (e) the b<strong>and</strong>s<br />

for cytochromes a, b <strong>and</strong><br />

c are indicated.<br />

Garrett <strong>and</strong> Grisham, Biochemistry, Third Edition

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