Page 1: Protein Structure and Functions
The first page details the fundamental aspects of proteins, their classification, and structural organization. Proteins are described as macromolecules composed of amino acid chains joined by peptide bonds.
Definition: Proteins are macromolecules formed by one or more polypeptide chains, united through peptide bonds.
Vocabulary: Peptide bond −COOH+−NH2=CO−NH+H2O is the primary chemical link between amino acids.
The structural levels of proteins are extensively detailed, from primary to quaternary structure, with specific interactions at each level including hydrogen bonds, van der Waals forces, and disulfide bridges.
Highlight: Protein denaturation involves the loss of structure and functionality, though renaturalization may occur under specific conditions.
Example: Hemoglobin serves as a transport protein, while collagen provides structural support.