Any opine whose structure is based on the condensation of an amino acid with a carbohydrate or a keto-acid.
| Member | Definition | Role |
|---|
| alanopine | An amino dicarboxylic acid that is 2,2'-iminodiacetic acid substituted by methyl groups at positions 2 and 2'. | 2,2'-iminodipropanoic acid |
| chrysopine | A spiroketal and delta-lactone resulting from the formal condensation of the carboxy group of L-glutamine with the anomeric hydroxy group of D-fructose and substitution of the 1-hydroxy group of the fructose by the alpha-amino group of the glutamine. It is found in crown gall tumours induced in chrysanthemums by Agrobacterium tumefaciens. | chrysopine |
| mannopine | A hexitol derivative that is D-mannitol in which the hydroxy group at position 1 is replaced by the alpha-amino group of L-glutamine. It is produced in crown gall tumours induced in a wide range of dicotyledenous plants by Agrobacterium tumefaciens. | mannopine |
| nopaline | An amino acid opine resulting from the formal reductive condensation of the amino group of L-arginine with the keto group of 2-oxopentanedioic acid. | D-nopaline |
| octopine | The (1R)-1-carboxyethyl derivative of L-arginine. It is a metabolite released by plant tumours. | D-octopine dizwitterion; D-octopine |
| saccharopine | The N(6)-(1,3-dicarboxypropan-1-yl) derivative of L-lysine. | L-saccharopine |