Iningi lamaprotheni asebenzayo emzimbeni atholakala ku-collagen, ebaluleke kakhulu esikhumbeni, emisipha nasemathanjeni. I-Glycine, i-proline, i-hydroxyproline, namanye ama-amino acid maningi emzimbeni womuntu. Kuyadingeka ekukhuleni kwezicubu ezixhumeneyo njengesikhumba, imithambo yegazi, amathambo, imisipha, amazinyo, noqwanga kubantu nasezilwaneni.