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Protein Structure and Classification
Jun 11, 2024
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Protein Structure and Classification
Introduction
Discussion on amino acids transitioning into proteins.
Focus on three-dimensional structure of proteins.
Overview of classifying proteins and forming secondary structures.
Classification of Proteins
Simple Proteins
Composed entirely of amino acids.
Conjugated Proteins
Contain additional groups like metal ions, co-factors (vitamins), lipids, or carbohydrates.
Example: Hemoglobin with heme prosthetic groups.
Fibrous Proteins
Long strands or sheets of polypeptides.
Hydrophobic and water-insoluble.
Strong and flexible.
Examples: Keratin (in fingernails), Collagen (in nose and ears).
Globular Proteins
Spherical or globular in shape.
Generally water-soluble; found in cytosol or outside cells.
Contain several secondary structure elements.
Functional variety: enzymes, regulatory proteins, etc.
Example: Catalase (enzyme), Hemoglobin.
Functions of Proteins
Enzymes
: Catalyze reactions; names end in
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