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JEE Main · 2020 · 05 Sep 2020 · Shift 1 · Biomolecules

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The number of chiral carbon(s) present in peptide, lie-Arg-Pro, is ____

Answer: 4

Solution

Count the stereocentres residue by residue. Isoleucine carries two, its -carbon and the methine carbon of its side chain; arginine contributes one at its -carbon; and proline contributes one at its -carbon, the ring itself adding none. Altogether chiral carbons.

JEE Main · 2020 · 05 Sep 2020 · Shift 1 · Integer answer

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