A terapeptide has − COOH group on alanine. This produces glycine (Gly), valine (Val). Phenyl alamine (Phe) and alanine (Ala) on complete hydrolysis. For this tetrapeptide, the number of possible sequences (primary structures) with − NH 2 group attached to a chiral center is.

Question

A terapeptide has − COOH group on alanine. This produces glycine (Gly), valine (Val). Phenyl alamine (Phe) and alanine (Ala) on complete hydrolysis. For this tetrapeptide, the number of possible sequences (primary structures) with − NH 2 group attached to a chiral center is.,

MARKS App · Accepted Answer

6 Combinations as last amino acid will be Alanine as it has free - C O O H group. Let's represent Alanine as A then the combinations feasible are: D C B A , D B C A , C D B A , B D C A , C B D A , B C D A . But glycine ia achiral thus tetrapeptide with − NH 2 group attached to chiral center is 4.

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