Ọtụtụ nwere mmasị na ebe ndị anaghị eri anụ na ndị anaghị eri anụ na-enweta protein nke anụ ahụ anyị chọrọ, ma ọ bụ karịa, amino acid sitere na emepụta protein. Protein ke oriri na osisi bụ nnọọ nkịtị.
Nke a bụ ndepụta nke nri osisi nwere protein:
Nke a abụghị ndepụta ngwaahịa zuru oke.
Nwere ike ịgụtakwu gbasara mkpa ahụ maka protein na isi mmalite osisi ya ebe a.