N 2-(1-carboxyethyl)methionine. A ‘pseudo-opine’ in octopine-type crown-gall tumours

1985/12/01 by J L Firmin, J. L. Firmin, I M Stewart +3
Biochemistry, Genetics and Molecular Biology · Health Professions · #Biochemical and Molecular Research #Oral and gingival health research #Polyamine Metabolism and Applications

paper · doi:10.1042/bj2320431

openalex publication_date 1985/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29

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.

Citations

• Stable incorporation of plasmid DNA into higher plant cells: the molecular basis of crown gall tumorigenesis

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