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. 1980 Nov;77(11):6670–6672. doi: 10.1073/pnas.77.11.6670

Regulatory coupling of nitrate and sulfate assimilation pathways in cultured tobacco cells

Ziva Reuveny *,†, Donald K Dougall *, Philip M Trinity ‡
PMCID: PMC350349  PMID: 16592917

Abstract

When cultured tobacco cells are provided growth-limiting concentrations of sulfur as sulfate, the rate of development of nitrate reductase (NADH:nitrate oxidoreductase, EC 1.6.6.1) is proportional to the initial sulfate concentration. When the cells are provided growth-limiting concentrations of nitrogen as nitrate, the rate of derepression of ATP sulfurylase (ATP:sulfate adenylyltransferase, EC 2.7.7.4) is proportional to the initial nitrate concentration. These results are taken to be indicative of a reciprocal regulatory coupling between the nitrate and sulfate assimilation pathways.

Keywords: nitrate reductase (NADH), sulfate adenylyltransferase, ATP sulfurylase, positive feedback regulation, nitrogen and sulfur metabolism

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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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