B.) use the three-letter and one-letter abbreviations of amino acids to give the

Question

B.) use the three-letter and one-letter abbreviations of amino acids to give the middle acid or in the tripeptide.(second picture) C.) what is the name of the tripeptide? 6. Answer the questions for the tripeptide that is shown below: (9 points) CHE CH CH CH HO CH O H CH, O H CH, O H3N C-N -O H a. What is the N-terminal amino acid? What is the C-terminal amino acid? b. Use the three-letter and one-letter abbreviations of amino acids to give the amino acid order in the tripeptide. c. What is the name of the tripeptide?

Explanation / Answer

A peptide is represented from N-terminus to C-terminus from left to right.

(a) The N - terminus amino acid i.e left side amino acid is,

CH3CH(OH)CH(NH2)COOH = Threonine, Thr, T

And the C-terminus acid i.e right side amino acid is,

H2NCH(CH2C6H5)COOH = Phenyl alanine, Phe, F

(b) The middle amino acid is,

H2NCH(CH2CH(CH3)2)COOH = Leucine, Leu, L

The name of tripeptide is,

Three letter name: Thr-Phe-Leu

One letter name: T - F - L

(c) Threonylphenylalanylleucine

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