. "\"Catalysis of the reaction: S-adenosyl-L-methionine + ethanolamine phosphate = S-adenosyl-L-homocysteine + N-methylethanolamine phosphate.\" [EC:2.1.1.103]" . . "phosphoethanolamine N-methyltransferase activity" . "phosphoethanolamine methyltransferase activity" . "S-adenosyl-L-methionine:ethanolamine-phosphate N-methyltransferase activity" . "EC:2.1.1.103" . "KEGG:R02037" . "MetaCyc:2.1.1.103-RXN" . "RHEA:20366" . "RHEA:20368" . . .