signal transduction 5 Flashcards
form FA
glycogen
pyruvate
Glucose infiltration throught the cell
Glucose comes through the cell
through transporter Glut 4
TF insulin on insulin receptor will trigger Glucoses to travel through Glucose transporter 4
T
cysteine
on 2 alpha subunits of insulin receptor on ext
constituitive tetramer
insulin receptor(2 alpha and 2 beta subunits)
tf the insulin receptor has disulfide bond between
the alpha subunits and between the beta subunits
F
alpha-alpha
alpha beta

after insulin binds its receptor
conf change and autophos occurs of the receptor
beta subunit of insulin receptor
tyrosine kinase domain
tf PTB domain is attracted to act insulin receptor before SH2 of PI-3K
T
Insulin receptor substrate
has pth and ph domains on it
PI 3k has 2 SH groups on it that bind to
PH domain of Irs
conf change on IRS
phos by RTK
PI3k ataching to it
tf PIP3 is broken to PIP2
F PIP2 is converted to PIP2
by PI3k
pdk1 and pkb
have ph domains and are attracted to PM after PIP3 is made
Pdk1 conf change and act on membrane
triiggers Pkb
ito move to PM and to be act and phos
Glut 4 pushed to membrane
allows glucose to come into membrane
Reduced insulin sensitivity characterized by elevated insulin in blood
Diabetes type 2
Mixed, mostly serous
submandibular
parotid
serous
Sublingual
Mixed, mostly mucous
symp nerves
protein secretion
NE(from symp nerves) binding to receptor
trigger Camp to secrete proteins
PS nerves
water/ions secretion
Ach bind to receptor trigger
Ca to be secreted
tf Symp and PS nerves are antagonistic
F
act togethr
in acinar cells
Muscarinic ach receptors(gpcr)
fluid secretion
beta adrenergic (gpcr)
binds NE and part of prtoein secretion
alpha subunit act phospholipase C
Fluid secretion
GPCR
puts ATP on G proteins(alpa subunit)
converts PIP2 to DAG and IP3
phospholipase C
role of ip3 in the fluid secretion
bind ip3 receptors of ER and releases Ca
Activation of ion pumps/channels
Formation of osmotic gradient
Ca in fluid secretion model
AC
involved in proteins secretion pathway to convert ATP to Camp and finally make pka
Exocytosis of preformed protein-containing vesicles Synthesis/packaging of new vesicles
pka in protein secretion model
Salivary gland dysfunction
Xerostomia