7_27 Lecture 1 Proteins 1.txt

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Author:
jcellis
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164703
Filename:
7_27 Lecture 1 Proteins 1.txt
Updated:
2012-08-01 14:34:43
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HUCM
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Microbiology
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    • author "Joshua Ellis"
    • tags "HUCM"
    • description ""
    • fileName "7/27 Lecture 1 Proteins 1"
    • freezingBlueDBID -1.0
    • What are the four key Non-Covalent Molecular Interactions
    • Ionic Interactions (salt bridge)
    • Hydrogen Bonding
    • The Hydrophobic effect
    • Van der Waals forces
  1. What is a "salt bridge"? What does it do?
    • Forms between residues of opposite charge in proteins.
    • Allows charged residues to be present within proteins and helps stabilize structure.

    also: further apart the weaker they are.
  2. What is the ionic energy equation?
    E=kq1q2/D(r)^2

    • E=energy
    • k= constant
    • q1 and q2 = charged particle strength
    • D= Dialectric constant (characteristic of the medium)
    • r= distance
  3. What atoms hydrogen bond? Why?
    • N,O, or F.
    • Due to high polarity of X-H bond.
  4. What is the Hydrophobic effect? How does it work?
    In which groups of non polar molecules stick together when surround by polar solution. Induces order into a system, lowering entropy, and thus energy.

    ex: proteins with hydrophobic cores.
  5. What is Van der Waals Force?
    Between uncharged but POLARIZABLE groups.

    Evdw = -A/r^6 +B/r^12 ???????do i have to know this?

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