GMS 6552 Exam 1 with !| !| !| !| !|
verified detailed solutions !| !|
Molecular Drug Targets - Correct answer ✔Receptors-45%
!| !| !| !| !| !|
Enzymes-28%
Hormones-11%
Unknown-7%
Ion Channels-5%
!|
DNA-4%
Channel-Linked (Ionotropic) Receptors - Correct answer ✔Produce
!| !| !| !| !| !| !|
cellular effects in milliseconds
!| !| !|
Nicotinic ACh receptor !| !|
GPCRs - Correct answer ✔Effects happen in seconds
!| !| !| !| !| !| !|
Muscarinic ACh receptor !| !|
Kinase-linked receptors - Correct answer ✔Effects happen in minutes
!| !| !| !| !| !| !| !|
Insulin receptor
!|
Receptors linked to gene transcription - Correct answer ✔Effects happen
!| !| !| !| !| !| !| !| !| !|
in hours
!|
,Estrogen receptor !|
Heterotrimeric G proteins - Correct answer ✔alpha, beta and gamma !| !| !| !| !| !| !| !| !| !|
subunits
GPCR Components - Correct answer ✔More than 800 receptors
!| !| !| !| !| !| !| !|
7 transmembrane domains
!| !|
N and C termini
!| !| !|
Conformationally flexible !|
Constitutively active !|
GPCR Ligands - Correct answer ✔Hormones, neurotransmitters,
!| !| !| !| !| !| !|
chemokine, ions, amino acids, peptides !| !| !| !|
G-proteins - Correct answer ✔a-20 !| !| !| !|
Gas- increases AC !| !|
Gai - decreases AC
!| !| !|
Gaq - increases PLC
!| !| !|
b(6)y(12)
Why use G proteins - Correct answer ✔Means of amplifying the signal
!| !| !| !| !| !| !| !| !| !| !|
G proteins can regulate more than one effector
!| !| !| !| !| !| !|
, PKA - Correct answer ✔Phosphorylase Kinase (glycogen breakdown)
!| !| !| !| !| !| !|
CREB (gene transcription)
!| !|
L-type Ca channels (heart contraction)
!| !| !| !|
Pyruvate Kinase (glycolysis) !| !|
Hormone Sensitive Lipase (triglyceride breakdown)
!| !| !| !|
Kinase-linked receptor signaling - Correct answer ✔No second messenger
!| !| !| !| !| !| !| !|
Protein kinase-linked receptors - Correct answer ✔Receptors associated
!| !| !| !| !| !| !| !|
with cytosolic kinases
!| !|
Receptor tyrosine kinases !| !|
Receptor serine/threonine kinases
!| !|
Receptors associated with cytosolic kinases - Correct answer ✔Ligands:
!| !| !| !| !| !| !| !|
Prolactin
GH
Interferons
Cytokines
Receptor tyrosine kinases - Correct answer ✔Receptor tyrosine kinases
!| !| !| !| !| !| !| !| !|
(RTKs) consist of an extracellular ligand
!| !| !| !| !|
binding and dimerization domain, a single hydrophobic
!| !| !| !| !| !|
transmembrane a-helix and a cytosolic domain with intrinsic
!| !| !| !| !| !| !|
verified detailed solutions !| !|
Molecular Drug Targets - Correct answer ✔Receptors-45%
!| !| !| !| !| !|
Enzymes-28%
Hormones-11%
Unknown-7%
Ion Channels-5%
!|
DNA-4%
Channel-Linked (Ionotropic) Receptors - Correct answer ✔Produce
!| !| !| !| !| !| !|
cellular effects in milliseconds
!| !| !|
Nicotinic ACh receptor !| !|
GPCRs - Correct answer ✔Effects happen in seconds
!| !| !| !| !| !| !|
Muscarinic ACh receptor !| !|
Kinase-linked receptors - Correct answer ✔Effects happen in minutes
!| !| !| !| !| !| !| !|
Insulin receptor
!|
Receptors linked to gene transcription - Correct answer ✔Effects happen
!| !| !| !| !| !| !| !| !| !|
in hours
!|
,Estrogen receptor !|
Heterotrimeric G proteins - Correct answer ✔alpha, beta and gamma !| !| !| !| !| !| !| !| !| !|
subunits
GPCR Components - Correct answer ✔More than 800 receptors
!| !| !| !| !| !| !| !|
7 transmembrane domains
!| !|
N and C termini
!| !| !|
Conformationally flexible !|
Constitutively active !|
GPCR Ligands - Correct answer ✔Hormones, neurotransmitters,
!| !| !| !| !| !| !|
chemokine, ions, amino acids, peptides !| !| !| !|
G-proteins - Correct answer ✔a-20 !| !| !| !|
Gas- increases AC !| !|
Gai - decreases AC
!| !| !|
Gaq - increases PLC
!| !| !|
b(6)y(12)
Why use G proteins - Correct answer ✔Means of amplifying the signal
!| !| !| !| !| !| !| !| !| !| !|
G proteins can regulate more than one effector
!| !| !| !| !| !| !|
, PKA - Correct answer ✔Phosphorylase Kinase (glycogen breakdown)
!| !| !| !| !| !| !|
CREB (gene transcription)
!| !|
L-type Ca channels (heart contraction)
!| !| !| !|
Pyruvate Kinase (glycolysis) !| !|
Hormone Sensitive Lipase (triglyceride breakdown)
!| !| !| !|
Kinase-linked receptor signaling - Correct answer ✔No second messenger
!| !| !| !| !| !| !| !|
Protein kinase-linked receptors - Correct answer ✔Receptors associated
!| !| !| !| !| !| !| !|
with cytosolic kinases
!| !|
Receptor tyrosine kinases !| !|
Receptor serine/threonine kinases
!| !|
Receptors associated with cytosolic kinases - Correct answer ✔Ligands:
!| !| !| !| !| !| !| !|
Prolactin
GH
Interferons
Cytokines
Receptor tyrosine kinases - Correct answer ✔Receptor tyrosine kinases
!| !| !| !| !| !| !| !| !|
(RTKs) consist of an extracellular ligand
!| !| !| !| !|
binding and dimerization domain, a single hydrophobic
!| !| !| !| !| !|
transmembrane a-helix and a cytosolic domain with intrinsic
!| !| !| !| !| !| !|