| Abstrakt: |
The cytochromes of the bacteriumStreptomyces erythreus have been investigated. Membrane-bounda-, b-, andc-type cytochromes were found together with a green pigment, which was found in both a soluble and membrane-bound form. Cells containing the green pigment exhibited cyanide-insensitive oxygen uptake. The CO-binding pigments included cytochromea3, ab-type cytochrome, cytochrome P450, and the green pigment. Photodissociation spectra at various low temperatures, in the presence or absence of oxygen, revealed cytochromeaa3 to be the predominant cytochrome terminal oxidase. The green pigment was capable of electron transport; the relationship of the pigment to the remainder of the electron transport chain remains to be ascertained. |
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