Question

Which of the following statements is false?

(a) Primary structure of a protein determines how it folds up into a unique three dimensional structure

(b) Secondary structure of a protein determines how it folds up into a unique three dimensional structure

(c) Three dimensional structure of a protein determines the function of a protein

(d) Amino acid sequence is absolutely invariant for a particular protein

This question was addressed to me during an online interview.

My doubt is from The Covalent Structure of Proteins in portion Amino Acids, Peptides and Proteins of Biochemistry

Answer 1

The correct choice is (b) Secondary structure of a protein determines how it folds up into a unique three dimensional structure

The best I can explain: Primary structure of a protein determines how it folds up into a unique three dimensional structure, which in turn determines the function of a protein.