 Glutaminopine ("N"2-(D-1,3-dicarboxypropyl) derivative of glutamine) is a member of the nopaline family isolated from crown gall tumors.Heliopine (also named vitopine) ("N"2 -(1-carboxyethyl)glutamine) was obtained from crown gall tumors.Histopine ("N"-(D-1-carboxyethyl)histidine) is a member of the octopine family found in crown gall tumors.