Biochem Phys Flashcards
link between glycolysis and TCA cycle
Pyruvate Dehydrogenase
nuclear localization signal?
3
marks a protein to enter the nucleus made of proline, lysine and arginine
vimentin
Associate w?
intermediate filament in connective tissue
sarcomas
desmin
associate w?
intermediate filament in muscle
associate w/ myosarcoma- leiomyosarcomas and rhadbomyosarcoma
cytokeratin
associate w/
intermediate filament in epithelial cells
Associate w/ carcinoma
GFAP
associate w/
intermediate filament in glial cells
Associate w/ astrocytoma and gliobastoma
Neurofilaments
associate w/
intermediate filament in neurons
Associate w/ neuroblastoma and primitive neuroectoderma tumors
Nuclear lamina ABC
associate w?
intermediate filaments making up the nuclear envelope
associate w/ mutations -> progeria (old age)
and muscular dstrophy
Microfilaments function?
actin and myosin
- cellular motility
Microtubule function
movement - cilia, flagella and mitotic spindle
Intermediate filaments function
cellular skeleton - differs w/ each ell used to ID cancer etiology
retrograde movement on microtubule
dynein
anterograde movement on microtubule
kinesin
Tyrosine Kinase receptor Examples and how composition (4)
PDG- single pass - transmembrane
Growth factor receptors - single pass trash membrane
Insuling and IGF -1 -
-2alpha bound extras cell and 2 beta w/ tyrosine activity
Improper clathrin and adapt in leads to
inability for receptor binding lwading to endocytosis-> can’t bring in
- recycled
Phosphatydalinositol?
enzyme that acts on it?
cell membrane phospholipid that leads to AA
Phosolipase A2
Drug blocking leukotrien production and MOZ
Zilueton
blocks lipoxygenase
Of the leukotriene receptor antagonist, which is best to give to a kid
Montelukast
Not as much Zafirlukast
Action of Leukotrienes (2)
Chemotaxis of PMN- LTB4
Increases bronchial tone - LTC4 and LTD4
Action of prostacyclin (4)
PGI2 Decreases uterine contraction Decreases platelet aggregation Decreases brachial tone Decreases vascular tone
Action of prostaglandins (4)
PGE2 and PGF2A Increases uterine contraction Increases gastric mucosa production Decreases vascular tone (KEEEEPS open) Decreases bronchial tone
Action of thromboxane (3)
TxA2 Increases platelet aggregation increases bronchial tone Increases vascular tone (opposite of PGI2)
APAP - acetaminophen’s action vs other COX inhibitors
Inactivated peripherally thus no anti inflammatory or anti platelet action
BCL-2
major anti apoptotic regulator of Mitochondrial permeability