IUBMB Enzyme Nomenclature


Accepted name: [phosphatase 2A protein]-leucine-carboxy methyltransferase

Reaction: S-adenosyl-L-methionine + [phosphatase 2A protein]-leucine = S-adenosyl-L-homocysteine + [phosphatase 2A protein]-leucine methyl ester

Other name(s): leucine carboxy methyltransferase-1; LCMT1

Systematic name: S-adenosyl-L-methionine:[phosphatase 2A protein]-leucine O-methyltransferase

Comments: Methylates the C-terminal leucine of phosphatase 2A. A key regulator of protein phosphatase 2A. The methyl ester is hydrolysed by EC (protein phosphatase methylesterase-1). Occurs mainly in the cytoplasm, Golgi region and late endosomes.

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


1. De Baere, I., Derua, R., Janssens, V., Van Hoof, C., Waelkens, E., Merlevede, W. and Goris, J. Purification of porcine brain protein phosphatase 2A leucine carboxyl methyltransferase and cloning of the human homologue. Biochemistry 38 (1999) 16539-16547. [PMID: 10600115]

2. Tsai, M.L., Cronin, N. and Djordjevic, S. The structure of human leucine carboxyl methyltransferase 1 that regulates protein phosphatase PP2A. Acta Crystallogr. D Biol. Crystallogr. 67 (2011) 14-24. [PMID: 21206058]

[EC created 2011]

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