Polypeptide Chain Synthesis: A Paper Simulation Actitivy

Proteins Are organic polymers. Polymers are composed of monomers. A monomer is a repeating structural unit What is the repeating structural unit for a protein? The amino acid Proteins

Basic Amino Acid Structure Amino group R group Carboxyl group

The Twenty Amino Acids with the R group of each highlighted

Polypeptide Synthesis Involves two amino acids. Involves a dehydration synthesis. Involves a chemical reaction that occurs between two specific areas of the amino acid. Requires an –OH group and an –H from another –OH group Polypeptide Synthesis

Think about these questions: What is a polypeptide chain? What two functional groups are involved in polypeptide synthesis? How can water form during the synthesis of a polypeptide chain?

Is this a complete protein? No Proteins are many chained structures. Are organic polymers composed of monomers called amino acids. How many amino acids are in this chain? Strands of amino acids are called polypeptide chains. Where are the peptide bonds? Is this a complete protein? No

The complete protein is the picture with two polypeptide chains. Amino Acids Polypeptide Chain Protein with two Polypeptide chains The complete protein is the picture with two polypeptide chains.

What determines a specific protein? The sequence of amino acids determines the specific protein Question 10 on the lab wants you to write the sequence of amino acids from the paper chain Phe-met-tryp-ala Use the (4) amino acids to make a protein Tryp–phe–ala-met Make another one: Phe-tryp-met-ala What determines a specific protein?

Video for Protein Function Functions of Proteins