PPT-16.3 Proteins: Primary Structure

A peptide bond is an amide bond that forms when the COO group of one amino acid reacts with the NH 3 group of the next amino acid The linking of two or more amino acids by peptide bonds forms a . 2. Proteins. Proteins are polymers made of monomers called amino acids. All proteins are made of 20 different amino acids linked in different orders. Proteins are used to build cells, act as hormones & enzymes, and do much of the work in a cell. P. art . 3. Proteins. Proteins!. Functions of Proteins. Structural . support. Storage. Transport. Cellular . communications. Movement. Defense . against foreign . substances. Proteins. Monomer: amino acids. The 20 different amino acids. 7.5.1: Explain the four levels of protein structure, indicating the significance of each level.. Peptide bonds link the amino acids together . Polypeptide with five amino acids. . The 20 different amino acids. 7.5.1: Explain the four levels of protein structure, indicating the significance of each level.. Peptide bonds link the amino acids together . Polypeptide with five amino acids. . The 411. Proteins account for more than 50% of the dry mass of most cells. Protein functions include structural support, storage, transport, cellular communications, movement, and defense against foreign substances. Levels of Protein Structure. Primary 1º Structure. The primary structure is simply the sequence of amino acids in a protein.. Chains of amino acids are written from the amino terminus (N-terminus) to the carboxyl terminus (C-terminus).. Proteins account for more than 50% of the dry mass of most cells. Protein functions include structural support, storage, transport, cellular communications, movement, and defense against foreign substances. Proteins. The Role of Enzymes. Success criteria. By the end of this lesson we will be able to:. State what elements are found in proteins. Describe what is meant by primary, secondary and tertiary structure of proteins.. Part II: Proteins & Nucleic Acids. The FOUR Classes of Large Biomolecules. All living things are made up of four classes of large biological molecules: . Carbohydrates . Lipids. Protein. N. ucleic Acids. The Structure and Function of Macromolecules Part II: Proteins & Nucleic Acids The FOUR Classes of Large Biomolecules All living things are made up of four classes of large biological molecules: Each amino acid (aa) shares a common structure; i.e. an amine (NH. 2. ) group, an acid group (COOH), and a central carbon atom bonded to hydrogen and to a side chain (R).. The side chains qualify aas as acidic, basic, neutral, aromatic, and sulphur-containing amino acids.. Dr. . Shaimaa. . Munther. . Learning Outcomes - Proteins. Define the levels of protein conformation and to indicate the role of weak interactions.. Illustrate how protein structure relates to protein function using examples.. Proteins are biopolymers, made of the 20 L- . α. -amino acids linked by peptide bonds.. Polypeptide backbone is a repeating sequence of. . N-C-C-N-C-C…. The side chain or R group is not a part of the backbone or the peptide bond.. A. . Peptides. are compounds, formed of less . than . 50 . amino acids . linked together by peptide bonds.. 1.. . Dipeptide. (2 amino acids and one peptide bond).. 2.. . Tripeptide. (3 amino acids and two peptide bonds)..