amino-acid residue
modified amino-acid residue
An organic group that results from covalent modification or chemical alteration to the side chain or backbone atoms of an amino acid residue or derivative thereof, where such alteration maintains the integrity of the amino acid chain containing the residue.
Category=external. Note: This entity is distinct from MOD:00000 "protein modification" in that the latter includes proteolytic cleavages. [PRO:DAN, PRO:JSG]
PR:000025513
modified amino acid chain residue
modified protein residue
protein
unmodified amino-acid residue