Chapter 21.1, Problem 4RQ

Interpretation Introduction

Interpretation:

Difference between the primary, secondary, and tertiary structure of proteins needs to be explained.

Concept introduction:

Proteins are made up of different types of amino acids. The structure of proteins differentiated based on the attached amino groups. The sequence of amino acid in a protein is called its primary structure, and by the dihedral angles of the peptide bonds determines the secondary structure of proteins the tertiary structure is formed by the folding of the proteins chains.

Answer to Problem 4RQ

Protein structure is defined as a polymer of amino acids, different amino acid joined together with peptides bonds. The sequences of the amino acid chain and their folding manner are differentiated the different structures of proteins.

Explanation of Solution

Based on the arrangement of the amino acids chain and the peptide bonds there is some difference between the different structure of proteins-

Primary structure	Secondary structure	Tertiary structure
The primary structure of the proteins is the simple structure.	The secondary structure of proteins is complex in structure.	This is the highly complex structure of the proteins.
They are found in a particular sequence of amino acids.	The amino acid chain is present in a folded manner.	This structure is formed due to the folding of the secondary structure.
Covalent, peptide bonds connect the amino acids to maintains the primary structure of proteins.	The chain interaction due to the carboxylic and amine groups.	There is the hydrogen bond, electrostatic forces, disulfide linkages stabilized the structure.
They are found in a linear manner of amino acid.	The structure complex due to the regular folding of the back bonding of the peptides bonds.	They form two major types of proteins fibrous and globular proteins.