Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

4. Protein Structure

Peptide Bond

Biochemistry

4. Protein Structure

Peptide Bond

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Amino acids in a protein are held together by which type of bond?

Ionic bond

Hydrogen bond

Disulfide bond

Peptide bond

Previous problemNext problem

Verified step by step guidance

Understand the structure of proteins: Proteins are composed of amino acids linked together in a chain. These amino acids are connected by specific chemical bonds.

Learn about peptide bonds: A peptide bond is a covalent bond formed between the carboxyl group (-COOH) of one amino acid and the amino group (-NH2) of another amino acid during a condensation reaction, which releases a molecule of water.

Differentiate peptide bonds from other types of bonds: Ionic bonds occur between charged particles, hydrogen bonds are weak interactions between polar molecules, and disulfide bonds are covalent bonds between sulfur atoms in cysteine residues. Peptide bonds are unique in linking amino acids in the primary structure of proteins.

Visualize the formation of a peptide bond: The reaction can be represented as:

{R - COOH}_{1} + {R - NH 2}_{2} \to {R - CO - NH}_{1} + {H 2 O}_{1}

Conclude that peptide bonds are responsible for linking amino acids in the primary structure of proteins, forming the backbone of the polypeptide chain.