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

Question

Except for glycine, which is achiral, all the amino acids present in proteins (A) Are chiral, but racemic (B) Have the L configuration at their α carbon (C) Have the R configuration at their α carbon (D) Have the S configuration at their α carbon

Tardigrade Admin · Accepted Answer

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 NH2-CH2-COOH L-amino acid <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/c-j4mksruzgpckdxdf.jpg" />

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

Are chiral, but racemic

Have the L configuration at their $α$ carbon

Have the R configuration at their $α$ carbon

Have the S configuration at their $α$ carbon

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 $N H_{2} - C H_{2} - COO H$
L-amino acid

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

Are chiral, but racemic

Have the L configuration at their α carbon

Have the R configuration at their α carbon

Have the S configuration at their α carbon

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 NH2​−CH2​−COOH L-amino acid

Have the L configuration at their $α$ carbon

Have the R configuration at their $α$ carbon

Have the S configuration at their $α$ carbon

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 $N H_{2} - C H_{2} - COO H$
L-amino acid