Regulation of sulfate transport and synthesis of sulfur-containing amino acids.
Recent research indicates that several sulfate transporters - exhibiting different tissue specificities and modes of expression - may play distinct roles in sulfate uptake within specific tissues and in long-distance sulfate translocation. The transcription levels of particular genes and feedback inhibition of serine acetyltransferase play major roles in regulating sulfur assimilation and cysteine synthesis. O-acetylserine and glutathione presumably act within the cysteine synthesis pathway as derepressor and repressor, respectively. A unique autoregulatory mechanism that stabilizes mRNA levels has recently been proposed for the regulation of methionine synthesis.[1]References
- Regulation of sulfate transport and synthesis of sulfur-containing amino acids. Saito, K. Curr. Opin. Plant Biol. (2000) [Pubmed]
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