Enzyme-Coupled Receptors Flashcards
1
Q
What are the 3 major classes of cell-surface receptor proteins?
A
Ion-channel-coupled
G-protein-coupled
Enzyme-coupled
2
Q
What kinds of ligands can diffuse through the cell membrane?
A
steroids, or any hydrophobic molecule
3
Q
What is phosphorylation?
A
The process of a protein being _activated” by attaching a phosphate group to it, covalently bonded.
4
Q
What kind of protein dephosphorylates?
A
phosphatase
5
Q
What are the most common second messengers?
A
cyclic AMP, Calcium,
6
Q
On a kinase, what group is the phosphate attached to when activated?
A
hydroxyl group
7
Q
What are the three amino acids that can be phosphorylated?
A
serine, threonine, and tyrosine
8
Q
A
