Pe peide na-arụ peptide na-arụ ọrụ na obere molecule, a na-enweta ya site na protein pea site na mgbagwoju anya enzyme bio-complex. Pepeide pea nwere ụdị amino asatọ nke bara uru maka mmadụ. Ngwaahịa pea nwere ike izute FDA iji nweta amino acid bara uru.
