Identify the intermolecular interaction that most directly stabilizes the α-helical…
CHEMISTRY · Single correct · A Level · Chemistry · Biomolecules · Biomolecules
Problem
Identify the intermolecular interaction that most directly stabilizes the α-helical secondary structure of a polypeptide chain.
(a) London dispersion forces among nonpolar side chains
(b) Hydrogen bonding between backbone C=O and N–H groups
(c) Salt bridges (ionic side-chain interactions) between residues
(d) Covalent disulfide bonds linking distant cysteine residues