title: N2-(1-carboxyethyl)methionine. A 'pseudo-opine' in octopine-type crown-gall tumours.
abstract: A novel methionine-containing plasmid-determined compound, N2-(1-carboxyethyl)methionine (NCEM) has been identified in crown-gall tumours induced by octopine-type strains of Agrobacterium tumefaciens. NCEM is probably synthesized by octopine synthase. Cell-free preparations from octopine-type strains of A. tumefaciens can degrade NCEM; however, the bacterium cannot transport the compound into the cell, although these strains can take up and degrade the octopine family of opines.
mesh_terms: D001120:Arginine / Q000031:analogs & derivatives / Q000378:metabolism; D004590:Electrophoresis, Paper; D008715:Methionine / Q000031:analogs & derivatives* / Q000302:isolation & purification / Q000378:metabolism; D010957:Plasmids; D012231:Rhizobium / Q000378:metabolism*
chemical_list: C008666:nopaline; C005394:octopine; D001120:Arginine; C047162:N(2)-(1-carboxyethyl)methionine; D008715:Methionine