Based on what you know about fibrous protein structure and sequence,what type of fibrous protein is this sequence most likely to from (You can assume that the protein is longer than what is shown and is repeating as shown,also note the polarity of each amino acid. )?
Val - Cys - Lys - Val - Cys - Ala - Cys - Val - Cys - Lys - Val - Cys - Ala - Cys
A)"$\alpha$ keratin"
B)"β keratin"
C)"collagen"
D)"pleated collagen"
E)"This sequence cannot be from any of the structural proteins."

Question

Quizplus · Accepted Answer

The sequence is rich in cysteine residues, which form disulfide bonds, characteristic of alpha-keratin, a type of fibrous protein found in hair, nails, and skin. This sequence's repeating nature and cysteine content are indicative of alpha-keratin's structure.

Based on What You Know About Fibrous Protein Structure and Sequence,what