Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
|
The ____________ predicts a proteins ___________ |
Conformation predicts function |
|
|
What are the 4 major classes of proteins? |
Fibrous, transmembrane, globular, DNA binding proteins |
|
|
Side chains of proteins must be _______ with its environment |
Compatible with its environment |
|
|
How are the backbone of proteins held together? Between what groups does this occur? |
Peptide bonds, via carboxyl and amino groups on the protein |
|
|
What is an alpha helix? |
It is a common secondary structure |
|
|
How is this confirmation maintained? (between which groups) |
Hydrogen bonds between the oxygen of a carbonyl group and the H of an amino group 4 carbons down |
|
|
Which amino acid would NOT be found in an alpha helix? why? |
proline, because it is the "helix breaker" |
|
|
Describe the shape of an alpha helix. Why is this shape important? |
All the backbone structures are in the center with the R groups radiating out, this keeps the alpha helix stable |
|
|
What are beta sheets? |
They are a secondary structure |
|
|
Beta sheets can either run ______ or ________ |
Parallel or Antiparallel |
|
|
Beta sheets can also form beta barrels, what is the function of such barrels? |
Transport hydrophobic substances, form pores in membranes |
|
|
Which is more rigid, an alpha helix or beta sheet? |
Beta Sheets |
|
|
What predicts the secondary and tertiary structures of a protein? |
The primary structure |
|
|
Define Tertiary Structure |
It is the irregular 3D folding pattern of the molecule |
|
|
Define Native Conformation |
The 3-dimensional form a protein should take for it to function properly |
|
|
What level does denaturation affect the protein? |
Tertiary and Secondary |
