. "The formation of a fluorescent protein chromophore cross-link from the alpha-carboxyl carbon of residue n, a lysine, to the alpha-amino nitrogen of residue n+2, a glycine, and a dehydration to form a double bond to the alpha-amino nitrogen of residue n+1. This cross-linking is coupled with a dehydrogenation of residue n+1 to form a double bond between the alpha and beta carbons." . . . . "peptide cross-linking via L-lysine 5-imidazolinone glycine" . "biosynthesis of protein-protein cross-link via L-lysine 5-imidazolinone glycine" . "biosynthetic process of protein-protein cross-link via L-lysine 5-imidazolinone glycine" . .