Ch. 12 - BiosignalingWorksheetSee all chapters
All Chapters
Ch. 1 - Introduction to Biochemistry
Ch. 2 - Water
Ch. 3 - Amino Acids
Ch. 4 - Protein Structure
Ch. 5 - Protein Techniques
Ch. 6 - Enzymes and Enzyme Kinetics
Ch. 7 - Enzyme Inhibition and Regulation
Ch. 8 - Protein Function
Ch. 9 - Carbohydrates
Ch. 10 - Lipids
Ch. 11 - Biological Membranes and Transport
Ch. 12 - Biosignaling
Clutch Review 1: Nucleic Acids, Lipids, & Membranes
Clutch Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway
Clutch Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism
Clutch Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation
Introduction to Biosignaling
G protein-Coupled Receptors
Stimulatory Adenylate Cyclase GPCR Signaling
Inhibitory Adenylate Cyclase GPCR Signaling
Drugs & Toxins Affecting GPCR Signaling
Recap of Adenylate Cyclase GPCR Signaling
Phosphoinositide GPCR Signaling
PSP Secondary Messengers & PKC
Recap of Phosphoinositide Signaling
Receptor Tyrosine Kinases
Insulin Receptor
Insulin Signaling on Glucose Metabolism
Recap Of Insulin Signaling in Glucose Metabolism
Insulin Signaling as a Growth Factor
Recap of Insulin Signaling As A Growth Factor
Recap of Insulin Signaling
Jak-Stat Signaling
Lipid Hormone Signaling
Summary of Biosignaling
Signaling Defects & Cancer

Concept #1: Drugs & Toxins Affecting GPCR Signaling

Example #1: What is the effect of these toxins on the intracellular concentration of cAMP?

Practice: Cholera toxin increases the cellular cAMP levels by:

Practice: Pertussis toxin is produced by Bordetella pertussis, the bacterium that causes whooping cough. Pertussis toxin catalyzes the addition of ADP-ribose to Gi which ‘locks’ it in the GDP-bound state. If the uninhibited, toxin free GPCR pathway normally results in decreased glycogen synthesis, then what would be the effect of pertussis toxin?

Concept #2: Agonists vs. Antagonists

Practice: Caffeine is a molecule that binds to ______________ receptors, inhibiting their response.

Practice: Caffeine is a(n) __________ of adenosine that blocks its receptors from activation.