BIOLOGY
STRUCTURE OF PROTEINS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The peptide bond is planar and has two states: trans, ≈ 180°, and cis, ≈ 0°. In the trans configuration, the two alpha carbon atoms of the connected amino acids are on the opposite sides of the peptide bond, whereas in cis configuration they are on the same side of the peptide bond.
Detailed explanation-2: -Solution : Due to resonance, C-N bond length in proteins is smaller than usual bond length of ‘C-N‘ bond. Therefore, option (a) is incorrect.
Detailed explanation-3: -A peptide bond has a rigid planar structure due to resonance. This resonance involves the sharing of electrons between the double bonds present in the carbonyl group and the peptide bond between carbon and nitrogen, which is a single bond.
Detailed explanation-4: -Answer and Explanation: The right option is C. It is a covalent bond formed via a condensation reaction.