1 / 12

Proteins

Proteins. Aim : What are the building blocks of proteins? . Building Blocks: Amino Acids. = Central Carbon. Amino Acids. Valine. Alanine. Q: How are these amino acids similar? How do they differ?. Glycine. What are proteins?. Proteins ALWAYS contain the following atoms:

erik
Télécharger la présentation

Proteins

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Proteins

  2. Aim: What are the building blocks of proteins?

  3. Building Blocks: Amino Acids = Central Carbon

  4. Amino Acids Valine Alanine Q: How are these amino acids similar? How do they differ? Glycine

  5. What are proteins? • Proteins ALWAYS contain the following atoms: • Nitrogen (N) • Carbon (C) • Hydrogen (H) • Oxygen (O) Note: sometimes they also contain sulfur & phosphorus • Many kinds of proteins exist, each with different properties.

  6. Why do we need them? • Found throughout living organisms. • Structural parts of cells and body tissues (bone, hair, muscle, & cartilage). • Proteins are found in Hormones (chemical messengers that control body functions). • Ex: Insulin- a hormone that regulates glucose levels • In Antibodies (our defense against disease). • Enzymes- “special” proteins that allow complex chemical reactions to occur faster.

  7. 20 Different Amino Acids Amino Acid Structure: ONLY Side chains (R) differ

  8. Dehydration Synthesis H2O Removed To link amino acids together.

  9. Dehydration Synthesis (Another look)

  10. Hydrolysis Water is added (hydro-) which breaks the peptide bond (-lyse)

  11. Hydrolysis To BREAK the peptide Bond. H2O added Q: What are the reactants? What are the products?

  12. Proteins • RNA- contains the information to make proteins. Q: What kind of organic compound is RNA? • The order of amino acids in a polypeptide chain determines the type of protein that is formed. • Different amino acid sequences = different proteins Note: amino acids are NOT really square, circular, etc. The different shapes are used to represent different amino acids.

More Related