Studies of Glutamate Dehydrogenase.

Describes reaction of glutamate dehydrogenase with glyoxal and NaB[sup 3]H[sub 4] and the labelled protein digested with trypsin. Isolation and identification of radio peptides in the primary structure of the enzyme; Small amounts of radioactivity contained in many peptides; Unspecific reactions with glyoxal; Identification of lysine-27 as the residue reacting with glyoxal; Conclusion that lysine residues.