The interaction of mucidin with anaerobically grown cells of Paracoccus denitrificans |
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Authors: | Igor Ku
era Pavla Boublíkov Vladimír Dadk |
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Institution: | Department of Biochemistry, University J.E. Purkyně, Kotlá?ská 2, 611 37 Brno Czechoslovakia |
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Abstract: | Mucidin similar to antimycin inhibits the electron flow to cytochrome c and the enzyme activities dependent on cytochrome c reduction in the cells of Paracoccus denitrificans, but it does not inhibit the electron flow to nitrate reductase and cytochrome o. Unlike antimycin mucidin does not permit a residual electron flow through the cytochrome bc1 region. In the presence of antimycin the electron flow to nitrate is lower than in using mucidin in contrast with a higher extent of cytochrome b reduction. This result is in contradiction to the participation of the constitutive cytochrome b as an electron donor in the nitrate reduction. |
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Keywords: | Mucidin Strobilurin A Nitrate reduction Electron transport Cytochrome b (P denitrificans) |
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