Question

Which of the following is a false statement?

(a) α-Keratin is α helical

(b) Collagen is α helical

(c) Hemoglobin has a quaternary structure

(d) α-Keratin is β pleated structure

I had been asked this question at a job interview.

My question comes from Protein Secondary Structure topic in section Three Dimensional Structure Of Proteins and Protein Function of Biochemistry

Answer 1

Right answer is (d) α-Keratin is β pleated structure

Easy explanation: Fibrous structural protein, α-Keratin is α helical.