Abstract
Gaschromatographic analysis shows that whole cells of Paracoccus denitrificans produce dinitrogen in the absence and nitrous oxide in the presence of thiocyanate during nitrate reduction. NADH nitrate reductase activity in vesicles is much more sensitive to thiocyanate than either NADH oxidase activity in vesicles or reduction of nitrate by endogenous substrates in whole cells. NADH nitrate reductase activity is not inhibited and NADH oxidase activity is partially inhibited by antimycin A in vesicles. Production of nitrous oxide from nitrate in cells is completely inhibited by the simultaneous presence of thiocyanate and Triton X-100. Carbonylcyanide m-chlorophenylhydrazone does not cause a lag phase in reduction of nitrate by NADH in vesicles, in contrast to the situation in cells.
| Original language | English |
|---|---|
| Pages (from-to) | 455-460 |
| Number of pages | 6 |
| Journal | FEMS Microbiology Letters |
| Volume | 20 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1983 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation
Keywords
- Denitrification
- electron transport inhibitor
- membrane vesicles
- nitrate uptake
- Paracoccus denitrificans
- uncoupler
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