MCQEasyJEE Main 2023 · 31 January, Shift 1Proteins (Amino Acids, Structure, Denaturation)

Chemistry Question from JEE Main 2023 · 31 January, Shift 1

A protein 'X' with molecular weight of 70,000u70{,}000 \, \text{u}, on hydrolysis gives amino acids. One of these amino acids is

  • A
    Structural formula showing NH2-CH2-CH(CH3)-CH2CH2COOH, with amino group on terminal carbon and carboxyl group at chain end.
  • B
    Structural formula showing CH3-CH(CH3)-CH2-CH(NH2)-COOH, an alpha-amino acid with amino group on carbon adjacent to carboxyl group.
  • C
    Structural formula showing CH3-CH(CH3)-CH(NH2)-CH2COOH, with amino group not on the alpha carbon relative to carboxyl group.
  • D
    Structural formula showing CH3-C(NH2)(CH3)-CH2-CH2COOH, a substituted amino acid structure with amino group away from the alpha carbon.

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