Introduction to Proteins
•What are some foods with proteins?
PROTEINSOne or more polypeptides, which are polymers of amino acids Functions:
1. Support 2. Enzymes 3. Transport 4. Defense5. Hormones 6. Motion
Amino Acids
20 Amino Acids
What is Phenylalanine? Is it bad for you?
• Coke Can, Yogurt, Mints
Phenylketonuria (PKU)Amino acid called phenylalanine
Does eating turkey make you sleepy?
• Tryptophan- Amino Acid
Peptides • Check out foldable
• Peptide bond
• Between C and N - Polarity
Protein Definitions
• Peptide
• Polypeptide– Avg. human _____
• Protein
– Hemoglobin
Protein Structure
• Primary Structure-• Secondary Structure-– Alpha helix– Beta sheet– (hydrogen bonds -dots)
• Tertiary Structure • Quaternary Structure
R Group
• Nonpolar • Polar • Ionized • Protein Folding Lab
Tests for Proteins
• Biurets Test
are
Hydrogen Bonds in Protein Secondary Structure:
Denaturation of Proteins (pH & Heat)
• Review Hydrogen Bonds: http://www.youtube.com/watch?v=LK7ERiCy5b8
- Hair Straightener: - http://www.youtube.com/watch?v=Zf-
g4k7ZIjA
Keratin ( Hair Protein)
NUCLEIC ACIDS
Polymers of Nucleotides• DNA • RNA
• ATP
Nucleotides
• 3 parts 1. 2. 3.
DNA vs. RNA Pentose Sugar
- DNA- - RNA-
Nitrogen Base - DNA - RNA
Monomer Polymer ( DNA, RNA)
Sugar Phosphate Backbone
ATP
• Adenosine Triphosphate
1. 2. 3.
ATP ADP