We have determined the complete amino acid sequence (54 residues) of the light chain of the mitogenic, glucose- and mannose-specific lectin from the seeds of Lathyrus odoratus. The covalent structure was elucidated by Edman degradation on the whole chain as well as on fragments derived from cleaving the chain with BNPS-skatole and of peptides derived after tryptic digestion of the citraconylated chain. The amino acid sequence revealed a high homology to the light chains of lectins from Pisum sativum and Lens culinaris.
