Session 6- Receptors in cell signalling Flashcards
1
Q
What is a ligand?
A
A small molecule that binds specifically to a receptor site
2
Q
What is a receptor?
A
A molecule that recognises specifically one or a family of ligands and responds by regulating cellular processes
3
Q
What are some similarities between binding at receptor sites and enzymes?
A
Specificity
Conformal change
No chemical modification (if at enzyme regulatory site)
4
Q
What are some differences between binding at receptor sites and enzymes?
A
Affinity of ligand is usually higher at receptor
Ligand bound to active site is chemically modified
