Ihe ka ọtụtụ protein nwere polymer linear nke e wuru site na usoro nke ihe dị ka 20 dị iche iche L-α-amino acids. All proteinogenic amino acids nwere ihe owuwu nkịtị, gụnyere α-carbon nke a na-ejikọta otu amino, otu carboxyl, na agbụ agbụ na-agbanwe agbanwe. Naanị proline dị iche site na usoro a bụ isi n'ihi na ọ nwere mgbanaka na-adịghị ahụkebe na N-end amine group, nke na-amanye CO<unk>NH amide fraction n'ime ihe a na-agbanwe agbanwe. Ngwongwo nke amino acid ndị a na-agbanwe agbanwe, nke a kọwara na ndepụta nke amino acid ndị a na-agbanwe agbanwe, nwere ọtụtụ ihe dị iche iche nke usoro kemịkal na ihe onwunwe; ọ bụ mmetụta jikọtara nke amino acid niile dị na protein nke na-ekpebi usoro atọ ya na mmeghachi omume kemịkal ya. Ajụjụ: Ego ole dị iche iche nke amino acid na-eme ka protein dị?
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