I-Collagen iyisakhiwo somzimba esibaluleke kakhulu futhi yenza cishe amaprotheni angama-30% emizimbeni yethu. I-Collagen iyiphrotheni eyinhloko yesakhiwo eqinisekisa ukubumbana, ukunwebeka nokuvuselelwa kwazo zonke izicubu zethu ezixhumene, okuhlanganisa isikhumba, imisipha, imigqa, uqwanga namathambo. Empeleni, i-collagen inamandla futhi iyagobeka futhi 'iyisinamathiselo' esibamba yonke into ndawonye. Iqinisa izakhi zomzimba ezihlukahlukene kanye nobuqotho besikhumba sethu. Kunezinhlobo eziningi ezahlukene ze-collagen emizimbeni yethu, kodwa amaphesenti angu-80 kuya kwangu-90 awo angaphansi koHlobo I, II noma III, kanti iningi liwuhlobo lwe-collagen. Uhlobo I-collagen fibril lunamandla amakhulu okudonsa. Lokhu kusho ukuthi zinganwetshwa ngaphandle kokuphulwa.