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. 1983 May;72(1):151–155. doi: 10.1104/pp.72.1.151

Glyceollin: A Site-Specific Inhibitor of Electron Transport in Isolated Soybean Mitochondria 1

Rick Boydston 1,2, Jack D Paxton 1,2, David E Koeppe 1,2
PMCID: PMC1066185  PMID: 16662949

Abstract

The glyceollin inhibition of electron transport by isolated soybean and corn mitochondria was similar to that of rotenone, acting at site I between the internal NADH dehydrogenase and coenzyme Q. Coupled state 3 malate oxidation was inhibited by glyceollin and rotenone with apparent Ki values of about 15 and 5 micromolar, respectively. Carbonylcyanide m-chlorophenyl hydrazone uncoupled state 4 malate oxidation was also inhibited by glyceollin and rotenone, but uncoupled succinate and exogenous NADH state 4 oxidation was only slightly inhibited by both compounds. Glyceollin also inhibited ferricyanide reduction with malate as the electron donor, with an apparent Ki of 5.4 micromolar, but failed to inhibit such reduction with succinate or externally added NADH as electron donors. Glyceollin did not inhibit state 4 oxidation of malate, succinate, or exogenous NADH. Glyceollin did not act as a classical uncoupler or as an inhibitor of oxidative phosphorylation.

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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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