. "\"The chemical reactions and pathways resulting in the formation of compounds derived from amino acids, organic acids containing one or more amino substituents.\" [CHEBI:25359, GOC:ai]" . . "cellular modified amino acid biosynthetic process" . "amino acid derivative biosynthetic process" . "cellular amino acid derivative anabolism" . "cellular amino acid derivative biosynthesis" . "cellular amino acid derivative biosynthetic process" . "cellular amino acid derivative formation" . "cellular amino acid derivative synthesis" . "cellular modified amino acid anabolism" . "cellular modified amino acid biosynthesis" . "cellular modified amino acid formation" . "cellular modified amino acid synthesis" . . .