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. 1982 Oct;152(1):151–156. doi: 10.1128/jb.152.1.151-156.1982

Reduction of exogenous cytochrome c by Neurospora crassa conidia: effects of superoxide dismutase and blue light.

U Takahama, M Shimizu-Takahama, T Egashira
PMCID: PMC221386  PMID: 6288655

Abstract

The reduction of externally added cytochrome c by Neurospora crassa conidia was observed. The reduction was stimulated by antimycin A and suppressed partially by superoxide dismutase. When conidia were treated with diethyldithiocarbamate, which inactivated endogenous superoxide dismutase, the cytochrome c reduction was stimulated. Blue light also stimulated the cytochrome c reduction. Azide, which inhibits photochemical reactions mediated by flavins, suppressed the blue light effect. Superoxide dismutase partially suppressed the cytochrome c reduction in the light. The results suggest that O2(-) participates in the cytochrome c reduction by conidia and the flavins or flavoproteins are candidates for the receptor pigment of blue light to stimulate the cytochrome c reduction. It was also suggested that the redox component(s), which could directly transfer its reducing equivalents to exogenous cytochrome c, was present at the surface of conidia.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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