Biochemistry 2

• Membrane-Bound Receptors


  Signal through second messengers
• Nuclear Receptors


  Regulate gene expression
• Ligand Binding


  Hormones bind to specific sites on receptors
• Insulin


  Stimulates glucose uptake and storage
• Glucagon


  Stimulates glucose release from storage sites
• Cortisol


  Regulates energy production during stress
• Epinephrine


  Increases metabolic rate during physical activity