Proline restricts backbone conformation and lacks the usual backbone amide hydrogen for the helix’s hydrogen-bond pattern. In the middle of a regular α helix it therefore often introduces a kink or break. Select A; the other residues do not impose this distinctive proline constraint.
More Biochemistry: Biomolecules, biological membranes, channels and pumps, molecular motors, action potential and transport questions
GATE 2019 BT Q56– An uncharged solute has a 1.6-fold concentration difference across a membrane. Find energy…
GATE 2024 BT Q24– An element that is present in a nucleotide but not in a nucleoside is .
GATE 2025 BT Q18– Correctly match the following Monosaccharides with their respective Epimers.…
GATE 2025 BT Q24– Which of the following show(s) optical activity at 100 mM concentration in water?
GATE 2025 BT Q38– An octapeptide composed of these L-amino acids – Lys, Thr, Ser, Met, Arg, Trp, Tyr, Glu –…
GATE 2025 BT Q56– Which of the following amino acids contain(s) two chiral carbons?