Term Name:	S-methylmethionine metabolic process
Synonyms:	S-methylmethionine metabolism
Definition:	The chemical reactions and pathways involving S-methyl-methionine (SMM). SMM can be converted to methionine by donating a methyl group to homocysteine, and concurrent operation of this reaction and that mediated by MMT sets up the SMM cycle.
Ontology:	GO: Biological Process [GO:0033477]    QuickGO    AmiGO