1.9 Proteins: Structures Flashcards
The primary, secondary, tertiary, and quaternary structures of proteins The different types of bonds found within each structure
1
Q
What is the primary structure of a protein?
A
The sequence of amino acids
2
Q
What type of bonds are present in the primary structure of a protein?
A
Peptide bonds
3
Q
What is the secondary structure of a protein?
A
The formation of hydrogen bonds between amino groups to form either an Alpha helix or beta pleated sheet
4
Q
What type of bonds are present in the secondary structure of a protein?
A
Hydrogen bonds
5
Q
What is the tertiary structure of a protein?
A
The unique complex 3D structure of the protein
6
Q
What type of bonds are present in the tertiary structure of a protein?
A
- Hydrogen bonds
- Ionic bonds
- Disulfide bridges
- Hydrophobic and hydrophilic interactions
7
Q
What is the quaternary structure of a protein?
A
- Interactions between two or more polypeptide chains (same bonds as tertiary)
- It can also involve the addition of non-protein prosthetic groups
8
Q
What type of bonds are present in the quaternary structure of a protein?
A
- Hydrogen bonds
- Ionic bonds
- Disulfide bridges
- Hydrophobic/hydrophillic interactions
9
Q
Do all proteins have a quaternary structure?
A
No
