What are examples of fibrous structural proteins?

one of protein classes, it contain polypeptide chains that are organized approximately parallel along a single axis.

Fibrous protein was a long fibers(large sheets), insoluble in water, also insoluble in dilute salt solutions, it strong, and important in nature.

• such as eg is keratin : hair and wool

and

• collagen of connective tissues : cartilage , skin and so on