Catalysis of the reaction: S-adenosyl-L-methionine + [protein]-L-leucine = S-adenosyl-L-homocysteine + [protein]-L-leucine methyl ester. This modification occurs only at the oxygen atoms of the free alpha carboxyl group of a leucine residue at the C-terminus of the protein.
Synonyms:
exact_synonym:
protein-leucine O-methyltransferase activity
narrow_synonym:
protein phosphatase methyltransferase activity
xref:
reactome:R-HSA-8856945 "PP2A methylation by LCMT1"