Peptide ni ibinyabuzima biri hagati ya aside amine na proteyine. Ifite uburemere buke bwa poroteyine, ariko uburemere bwa molekile nini kuruta aside amine. Ni agace ka poroteyine. Nukuvuga ko, kuva hejuru ya bibiri cyangwa bigera kuri mirongo ya aminide acide peptide ihuza polymerisiyumu muri peptide, hanyuma ikava kuri peptide nyinshi hamwe numunyururu wuruhande polymerisation muri proteine. Acide ya amino ntishobora kwitwa peptide, igomba kuba irenze aside amine acide ihujwe nuruvange rwa peptide kugirango bita peptide; Aminide acide nyinshi ivanze hamwe ntabwo yitwa peptide; Acide Amino igomba guhuzwa na peptide, igakora "urunigi rwa aside amine", "umugozi wa aside amine", umugozi wa acide amine urashobora kwitwa peptide. .