Leucine encephalin has to be drawn and also N-terminal and C-terminal has to be identified. Concept introduction: Many amino acids are linked together through amide bonds to form a biologically large molecule known to be proteins. Amino functional group is ( − N H 2 ) and carboxyl functional group is ( − C O O H ) and a R group is considered as side chain, when all these are bonded to same carbon atom.s Endorphins are neurotransmitters. Enkephalins are biologically active part of endorphins. N-terminal amino acids are those with free − N H 3 + group at the end of the protein. C-terminal amino acids are those with − C O O − group at the end of the protein.

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Chapter 18, Problem 18.63AP

Interpretation Introduction

Interpretation:

Leucine encephalin has to be drawn and also N-terminal and C-terminal has to be identified.

Concept introduction:

Many amino acids are linked together through amide bonds to form a biologically large molecule known to be proteins.

Amino functional group is (−NH2) and carboxyl functional group is (−COOH) and a R group is considered as side chain, when all these are bonded to same carbon atom.s

Endorphins are neurotransmitters.

Enkephalins are biologically active part of endorphins.

N-terminal amino acids are those with free −NH3+ group at the end of the protein.

C-terminal amino acids are those with −COO− group at the end of the protein.

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