Term Name:	L-histidine N(alpha)-methyltransferase activity
Synonyms:	histidine methyltransferase activity, histidine N-methyltransferase activity, S-adenosyl-L-methionine:L-histidine alpha-N-methyltransferase activity, S-adenosyl-L-methionine:L-histidine Nalpha-methyltransferase activity
Definition:	Catalysis of the reaction: L-histidine + 3 S-adenosyl-L-methionine <=> 3 H(+) + hercynine + 3 S-adenosyl-L-homocysteine. This reaction is the addition of three methyl groups to L-histidine to form N-alpha,N-alpha,N-alpha-trimethyl-L-histidine (also known as hercynine).
Ontology:	GO: Molecular Function [GO:0052706]    QuickGO    AmiGO