Bonding responsible for the sheet formation in β-sheets is to be identified. Concept introduction: Many amino acids are linked together through amide bonds to form a biologically large molecule known to be proteins. Amine 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. Secondary structure of protein is the repeating structural patterns ( α-helix and β-sheets ) formed by hydrogen bonding between backbone atoms of the neighboring segments of protein. β-sheets is the secondary structure in which adjacent protein in same or different molecules held together by hydrogen bonds alone the backbone giving rise to a flat sheet like structure. Hydrogen bonding is an electrostatic attraction between hydrogen and an electronegative atom.

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Chapter 18.7, Problem 18.24P

(a)

Interpretation Introduction

Interpretation:

Bonding responsible for the sheet formation in β-sheets is to be identified.

Concept introduction:

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

Amine 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.

Secondary structure of protein is the repeating structural patterns (α-helix and β-sheets) formed by hydrogen bonding between backbone atoms of the neighboring segments of protein.

β-sheets is the secondary structure in which adjacent protein in same or different molecules held together by hydrogen bonds alone the backbone giving rise to a flat sheet like structure.

Hydrogen bonding is an electrostatic attraction between hydrogen and an electronegative atom.

(b)

Interpretation Introduction

Interpretation:

The atoms responsible for hydrogen bonding are 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.

Secondary structure of protein is the repeating structural patterns (α-helix and β-sheets) formed by hydrogen bonding between backbone atoms of the neighboring segments of protein.

β-sheets is the secondary structure in which adjacent protein in same or different molecules held together by hydrogen bonds alone the backbone giving rise to a flat sheet like structure.

Hydrogen bonding is an electrostatic attraction between hydrogen and an electronegative atom.

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