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Protein Exhibition

Protein Exhibition. By: Dr. K. THARMARAJ. Structure of an Amino Acid. Examples of Different Amino Acids. Cysteine. Serine. Structure of an Amino Acid. Amino acids have an amino group and a carboxyl group Both groups are covalently bonded to the center carbon atom, called the alpha carbon.

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Protein Exhibition

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  1. Protein Exhibition By: Dr. K. THARMARAJ

  2. Structure of an Amino Acid

  3. Examples of Different Amino Acids Cysteine Serine

  4. Structure of an Amino Acid • Amino acids have an amino group and a carboxyl group • Both groups are covalently bonded to the center carbon atom, called the alpha carbon. • Bonded to the alpha carbon is a hydrogen atom and a chemical group called the ‘R group’. • The amino acid type differs depending on the structure of the R group.

  5. Peptide Bond

  6. Peptide Bond • When two amino acids join and go through a condensation reaction. • Water molecule removed as carboxyl-group carbon atom bonds to the amino-group nitrogen, of its neighbor. • Resulting covalent linkage is called a peptide bond.

  7. Condensation Reactions • A chemical reaction in which two molecules become covalently bonded to each other through the loss of a molecule, usually water. • When a bond forms between two monomers (amino acids), making a Dipeptide, each monomer contributes to the lost water molecule. • Cells must expend energy to carry out dehydration synthesis. • This process results in the formation of a Peptide bond, which can be joined with other bonds that will eventually contribute to the formation of a larger molecule (Polypeptide chain or Protein).

  8. Polypeptides

  9. Polypeptides • Chain of amino acids • Range from a few to a thousand or more monomers • Each has a unique sequence of amino acids and has a unique 3-dimensional shape in a protein • Function of the protein depends on its ability to recognize and bind to its substrate

  10. Function of Proteins • *Functions of proteins can be interchangeable with functions of polypeptides

  11. Sources of Protein (food)

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