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NTA Abhyas NEET2020ChemistryBiomoleculesPractice

Except for glycine, which is achiral, all the amino acids present in proteins

Options

  1. AAre chiral, but recemic
  2. BHave the L configuration at their α carbon
  3. CHave the R configuration at their α carbon
  4. DHave the S configuration at their α carbon

Correct answer

B. Have the L configuration at their α carbon

Step-by-step solution

Amino acids which combine into peptide chains to form the building blocks of a rest array of proteins are all L-stereoisomers (left handed) Glycine N H 2 - C H 2 - C O O H L-amino acid

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