Which of the following is not correct about the α-Helices?
(a) An α-helix has a main chain backbone conformation that resembles a corkscrew
(b) Nearly all known α-helices are right handed, exhibiting a leftward spiral form
(c) Nearly all known α-helices are right handed, exhibiting a rightward spiral form
(d) In right handed helix, there are 3.6 amino acids per helical turn
I have been asked this question during an internship interview.
My question is from Protein Structure Basics topic in section Structural Bioinformatics of Bioinformatics