Epinephrine B-Adrenergic receptor α В Figure 13.04 Biochemistry, Third Edition 2015 W.H. Freeman and Company ATP Adenylate cyclase Protein kinase A Cyclic AMP ↓ Protein kinase A 1. What type of receptor is this? 2. Is it a integral protein, peripheral protein, GPI linked protein? 3. What are the characteristics of membrane proteins? 4. Which Ga protein activates adenylyl cyclase? 5. Which form of the Ga protein is active (GTP bound or GDP bound)? 6. When does Ga re-associate with the beta and gamma G proteins? 7. What is the secondary messenger produced from the activation of adenylyl cyclase? Proliferation Migration

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Chapter27: Medications That Affect The Nervous System
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Problem 23RQ
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Epinephrine
α
GDP
B
B-Adrenergic
receptor
Figure 13.04
Biochemistry, Third Edition
2015 W.H. Freeman and Company
Y
KOMA
Adenylate
cyclase
GTP
ATP
Protein
kinase A
Cyclic
AMP
↓
W
Protein
kinase A
1. What type of receptor is this?
2.
Is it a integral protein, peripheral
protein, GPI linked protein?
3. What are the characteristics of
membrane proteins?
4. Which Ga protein activates
adenylyl cyclase?
5.
Which form of the Ga protein is
active (GTP bound or GDP
bound)?
6. When does Ga re-associate with
the beta and gamma G proteins?
7. What is the secondary messenger
produced from the activation of
adenylyl cyclase?
Proliferation
Migration
Transcribed Image Text:Epinephrine α GDP B B-Adrenergic receptor Figure 13.04 Biochemistry, Third Edition 2015 W.H. Freeman and Company Y KOMA Adenylate cyclase GTP ATP Protein kinase A Cyclic AMP ↓ W Protein kinase A 1. What type of receptor is this? 2. Is it a integral protein, peripheral protein, GPI linked protein? 3. What are the characteristics of membrane proteins? 4. Which Ga protein activates adenylyl cyclase? 5. Which form of the Ga protein is active (GTP bound or GDP bound)? 6. When does Ga re-associate with the beta and gamma G proteins? 7. What is the secondary messenger produced from the activation of adenylyl cyclase? Proliferation Migration
1. Which G protein activates
Phospholipase C (PLC)?
2. What phospholipid does
PLC cleave to produce
second messengers?
3. What are the properties
of these 2 second
messengers?
4. Which second messenger
opens a ligand gated ion
channel in the ER?
5. Which hydrophobic
second messenger
activates protein kinase
C?
6. Which hydrophilic second
messenger activates
protein kinase C by
increasing cytosolic Ca2+
levels which allows Ca2+
to bind to PKC?
Kinases
PI 3-kinase
2
Phosphatidylinositol
(PI)
PI 4,5-bis-phosphate
(PI-4,5-bisP)
PLC
Plasma
membrane
domains
0000
Diacylglycerol
(DAG)
Inositol 1,4,5-tris-phosphate
(IP₂)
Second messengers
PI 3,4,5-tris-phosphate
(PI-3,4,5-trisP)
Docking site for
pleckstrin homology
H
Cell membrane
PIP 2
Phospholipase C
cleavage
IP 3
ER membrane
ay
Calcium
ion
Calcium
ion
Figure 13.12
Biochemistry, Third Edition
2015 W.H. Freeman and Company
Diacylglycerol (DAG)
DAGI
TAKMINMA
Protein kinase C
IP3
receptor
Cytoplasm
MINIM
Transcribed Image Text:1. Which G protein activates Phospholipase C (PLC)? 2. What phospholipid does PLC cleave to produce second messengers? 3. What are the properties of these 2 second messengers? 4. Which second messenger opens a ligand gated ion channel in the ER? 5. Which hydrophobic second messenger activates protein kinase C? 6. Which hydrophilic second messenger activates protein kinase C by increasing cytosolic Ca2+ levels which allows Ca2+ to bind to PKC? Kinases PI 3-kinase 2 Phosphatidylinositol (PI) PI 4,5-bis-phosphate (PI-4,5-bisP) PLC Plasma membrane domains 0000 Diacylglycerol (DAG) Inositol 1,4,5-tris-phosphate (IP₂) Second messengers PI 3,4,5-tris-phosphate (PI-3,4,5-trisP) Docking site for pleckstrin homology H Cell membrane PIP 2 Phospholipase C cleavage IP 3 ER membrane ay Calcium ion Calcium ion Figure 13.12 Biochemistry, Third Edition 2015 W.H. Freeman and Company Diacylglycerol (DAG) DAGI TAKMINMA Protein kinase C IP3 receptor Cytoplasm MINIM
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