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Types of Proteins and Protein Folding

🧬 TYPES OF PROTEINS & PROTEIN FOLDING (UP TO QUATERNARY STRUCTURE) This lesson covers the main types of proteins and explains protein folding up to quaternary structure, making it perfect for exam revision and clear understanding. 🧪 What you’ll learn: 🔹 Types of Proteins Globular proteins – compact, spherical, and soluble (e.g., enzymes, haemoglobin) Fibrous proteins – long, strong, and insoluble (e.g., collagen, keratin) Membrane proteins – found in cell membranes (channels, carriers, receptors) 🔹 Protein Folding (Levels of Structure) Primary structure – sequence of amino acids linked by peptide bonds Secondary structure – alpha helix and beta-pleated sheet formed by hydrogen bonds Tertiary structure – 3D shape formed by interactions (hydrogen bonds, ionic bonds, disulfide bridges) Quaternary structure – arrangement of multiple polypeptide chains into one functional protein 🎯 Why this video is important: Focused on key exam content Simplifies protein structure and function Helps you connect folding to protein roles 📌 Perfect for: ✔ A-level biology students ✔ Exam revision ✔ Quick concept understanding 👍 Like | 💬 Comment | 🔔 Subscribe for more biology content #Proteins #ProteinStructure #ProteinFolding #BiologyRevision #ALevelBiology