IUBMB Enzyme Nomenclature


Accepted name: [trehalose-6-phosphate synthase]-L-cysteine S-methyltransferase

Reaction: S-adenosyl-L-methionine + [trehalose-6-phosphate synthase]-L-cysteine = S-adenosyl-L-homocysteine + [trehalose-6-phosphate synthase]-S-methyl-L-cysteine

Systematic name: S-adenosyl-L-methionine:[trehalose-6-phosphate synthase]-L-cysteine S-methyltransferase

Comments: The enzyme, characterized from the yeast Saccharomyces cerevisiae, enhances the activity of EC, trehalose-6-phosphate synthase, resulting in elevating the levels of trehalose in the cell and contributing to stationary phase survival. In vitro the enzyme performs S-methylation of L-cysteine residues of various protein substrates.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Sengupta, S., Banerjee, S., Lahiri, S., Dutta, T., Dhar, T.K. and Ghosh, A.K. Purification, characterization, sequencing and molecular cloning of a novel cysteine methyltransferase that regulates trehalose-6-phosphate synthase from Saccharomyces cerevisiae. Biochim. Biophys. Acta 1840 (2014) 1861-1871. [PMID: 24412193]

[EC created 2015]

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