Iipepeptide zentlanzi ye-collagenzicatshulwa kwiintlanzi zolwandle. Ayinangcolisi kwaye inencasa elungileyo, kwaye iziphumo zayo zicacile. Ityebile kwisondlo kwaye inyibilika kakhulu emanzini.
I-collagen yenyama enobunzima beemolekyuli ezingaphantsi kwama-800 e-dalton, yi-oligomer peptide, esebenza emzimbeni womntu okanye kolusu kwaye ine-permeability elungileyo kunye nokufunxeka.