I-Collagen yeyona nto ibalulekileyo yokwakha emzimbeni kwaye yenza malunga ne-30% yeeprotheyini emizimbeni yethu. I-Collagen yiprotheni engundoqo yesakhiwo eqinisekisa ukubambisana, ukuqina kunye nokuhlaziywa kwazo zonke izicubu zethu ezidibeneyo, ezibandakanya ulusu, i-tendon, i-ligaments, i-cartilage kunye namathambo. Ngokwenyani, icollagen yomelele kwaye ibhetyebhetye kwaye 'yiglu' egcina yonke into kunye. Yomeleza izakhiwo zomzimba ezahlukeneyo kunye nokuthembeka kolusu lwethu. Kukho iintlobo ezininzi ze-collagen emzimbeni wethu, kodwa i-80 ukuya kwi-90 ekhulwini yazo i-Type I, II okanye i-III, kwaye uninzi luyi-Type I collagen. Uhlobo I-collagen fibrils lunamandla amakhulu okuqina. Oku kuthetha ukuba zinokolulwa ngaphandle kokwaphuka.