2.3.7 - Fibrous Proteins: Structure & Function

Question 1

Describe Fibrous Proteins Structure
(3 Points)

Answer 1

~ Long, insoluble polypeptide chains.

~ Tightly coiled round each other to form a rope shape.

~ Chains are held by many bonds, making the proteins strong.

Question 2

Why Are Fibrous Proteins Insoluble?

Answer 2

Due to a large number of hydrophobic R groups.

Question 3

What Is The Function Of Fibrous Proteins?
(2 Points)

Answer 3

~ Suitable for structural roles as they are strong and insoluble.

~ Often found in supportive tissue.

Question 4

What Is An Example Of A Fibrous Protein?

Answer 4

Collagen.

Question 5

Describe Collagen
(2 Points)

Answer 5

~ Formed from 3 polypeptide chains closely held together by hydrogen bonds.

~ Flexible structural protein forming connective tissues,