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Which of the following amino acid side chains can form hydrogen bonds with each other?


Which of the following amino acid side chains can form hydrogen bonds with each other? 

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Isoleucine Leucine Glutamic acid Aspartic acid Lysine Asparagine 

  • Arg & Leu 

  • Val & Asn 

  • Asn & Ser 

  • Ser & Val 

  • Val & lle

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Answer #1

Correct option is : Asn and Ser ( Asparagine and serine)

[All the other pairs of amino acids have 1 hydrophobic nonpolar amino acids, which do not form hydrogen bond-like Leu, Val, or Ile. But Asn and Ser are polar and can form hydrogen bonds with each other. ]

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