Which of the Following is Not a Fibrous Protein

Question

Which of the following is not a fibrous protein?
A) actin
B) collagen
C) keratin
D) None, they are all fibrous proteins.

Accepted Answer

Fibrous proteins are proteins that have a long, thread-like structure. They are typically strong and insoluble in water. Actin, collagen, and keratin are all fibrous proteins.