We discussed three general classes of fibrous proteins kerat

We discussed three general classes of fibrous proteins: keratins, collagens and silk fibroins. There are other proteins that form fibers also, especially some amyloidogenic proteins. In Prion 2(3), 112 and J. Biol. Chem. 280(4), 2481, the nature of several fibrous amyloids is discussed. How are amyloid fibers different from other fibrous proteins?

Solution

A fibrous protein possess elongated shape and provide structural support for cells and tissue. Eg. Keratin, Collagen.

Amyloid fibers are peptide or proteins aggregates formed under certain disease conditions. Eg. Amyloid fiber flaques found in Alzimer disease patients and involved in neuro degeneration