Term
Carbamoyl phosphate synthetase II reaction |
|
Definition
HCO3 + 2 ATP + Gln → Carbomoyl-P + Glu + 2 ADP + Pi |
|
|
Term
Location of carbamoyl phosphate synthetase I |
|
Definition
|
|
Term
Location of carbamoyl phosphate synthetase II |
|
Definition
|
|
Term
Nitrogen donor for carbamoyl phosphate synthetase I |
|
Definition
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|
Term
Nitrogen donor for carbamoyl phosphate synthetase II |
|
Definition
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|
Term
Dihydroorotase has what cofactors (2) |
|
Definition
|
|
Term
Location of dihydroorotase |
|
Definition
Inner mitochondrial membrane |
|
|
Term
Purine salvage enzyme to make IMP |
|
Definition
|
|
Term
|
Definition
Dihydroorotate dehydrogenase inhibitor |
|
|
Term
|
Definition
1) Rheumatic arthritis, 2) psoriatic arthritis |
|
|
Term
|
Definition
Deficiency in last two steps of OMP synthesis |
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|
Term
Orotic aciduria leads to what (2) |
|
Definition
1) Mental retardation, 2) megaloblastic anemia |
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|
Term
Purine ring origin: atom #1 |
|
Definition
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|
Term
Purine ring origin: atom #2 |
|
Definition
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|
Term
Purine ring origin: atom #3 |
|
Definition
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|
Term
Purine ring origin: atom #4 |
|
Definition
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|
Term
Purine ring origin: atom #5 |
|
Definition
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|
Term
Purine ring origin: atom #6 |
|
Definition
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|
Term
Purine ring origin: atom #7 |
|
Definition
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|
Term
Purine ring origin: atom #8 |
|
Definition
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|
Term
Purine ring origin: atom #9 |
|
Definition
|
|
Term
Origin of atoms in purine rings (5) |
|
Definition
1) Gly, 2) Asp, 3) Gln (x2), 4) N10-formyl-THF (x2), 5) CO2 |
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|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
N-donor for carbamoyl-P synthetase II |
|
Definition
|
|
Term
|
Definition
|
|
Term
N-donor for PRPP → phosphoribosylamine |
|
Definition
|
|
Term
IMP → AMP synthesis: which NTP is used |
|
Definition
|
|
Term
IMP → GMP synthesis: which NTP is used |
|
Definition
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|
Term
Inhibitors of PRPP synthetase (2) |
|
Definition
|
|
Term
Inhibitors of PR synthase (3) |
|
Definition
1) AMP, 2) GMP, 3) IMP [All are products] |
|
|
Term
Lesch-Nyhan syndrome cause |
|
Definition
|
|
Term
Lesch-Nyhan syndrome effects (2) |
|
Definition
1) Self-mutilation, 2) hyperuricemia |
|
|
Term
Familial infantile autism cause |
|
Definition
Deficiency of adenylsuccinate lyase |
|
|
Term
Purine salvage enzyme to make XMP |
|
Definition
|
|
Term
Purine salvage enzyme to make AMP |
|
Definition
|
|
Term
General reaction of HGPRTase and APRTase |
|
Definition
Base + phosphoribosyl → NMP + PPi |
|
|
Term
Purine salvage enzymes (2) |
|
Definition
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|
Term
Deoxyribonucleotide synthesis by what enzyme |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Ribonucleotide reductase general reaction |
|
Definition
ribo-PP + thioredoxin-SH → deoxyribo-PP + thioredoxin |
|
|
Term
What recycles oxidized thioredoxin |
|
Definition
|
|
Term
Thioredoxin reductase uses what reducing source |
|
Definition
|
|
Term
Ribonucleotide reductase: what's "special" about the reaction |
|
Definition
Free radical (through Tyr residue) |
|
|
Term
Ribonucleotide reductase allosteric regulation |
|
Definition
Elaborate: sites for ribo-TP & deoxyribo-TP to ensure balance of all 4 products |
|
|
Term
Ribonucleotide reductase: master off switch |
|
Definition
|
|
Term
Thymidine synthesis by what enzyme |
|
Definition
|
|
Term
Thydiylate synthase general reaction |
|
Definition
dUMP + methylene-THF → TMP + DHF |
|
|
Term
Thydiylate synthase: methyl donor |
|
Definition
|
|
Term
Thydiylate synthase: electron donor |
|
Definition
|
|
Term
What restorese used methylene-THF by thydiylate synthase |
|
Definition
|
|
Term
Inhibitors of dihydrofolate reductase (2) |
|
Definition
1) Methotrexate, 2) 5-fluorouracil |
|
|
Term
Methotrexate ultimately inhibits synthesis of what |
|
Definition
|
|
Term
Methotrexate leads to what condition and how |
|
Definition
Macrocytic anemia by blocking Met synthesis |
|
|
Term
5-Fluorouracil is different from methotrexate how (2) |
|
Definition
1) Does not cause macrocytic anemia, 2) leucovorin potentiates effects instead |
|
|
Term
Why give leucovorin to high does methotrexate patients |
|
Definition
Leucovorin competes more readily in normal cells than methotrexate and keeps them alive by not letting methotrexate kill them |
|
|
Term
Pyrimidine degradation: C → |
|
Definition
|
|
Term
Pyrimidine degradation: U → |
|
Definition
|
|
Term
Pyrimidine degradation: T → |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Purine degradation: adenosine → |
|
Definition
Inosine → hypoxanthine → xanthine |
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|
Term
Purine degradation: SAH → |
|
Definition
|
|
Term
Uric acid production reactions |
|
Definition
Hypoxanthine → xanthine → uric acid |
|
|
Term
Forms of the enzyme that creates uric acid (2) |
|
Definition
1) Xanthine DH, 2) xanthine oxidase |
|
|
Term
|
Definition
|
|
Term
Cofactor for xanthine oxidase |
|
Definition
|
|
Term
Special prosthetics of xanthine DH/oxidase (2) |
|
Definition
1) Molybdenum, 2) non-heme Fe/S cluster |
|
|
Term
Inhibitor of xanthine DH/oxidase |
|
Definition
|
|
Term
Effects of allopurinol (2) |
|
Definition
1) Prevents Mo4+ to Mo6+ re-oxidation, 2) added to PRPP by HGPRTase inhibiting purine synthesis |
|
|
Term
Causes of hyperuricemia (7) |
|
Definition
1) HGPRTase deficiency, 2) AMP → ATP conversion deficiency, 3) glycogen storage diseases, 4) carnitine acyltransferase deficiency, 5) von Gierke's, 6) tumor lysis syndrome, 7) crush injuries |
|
|
Term
Uric acid crystals in urine lead to |
|
Definition
|
|
Term
|
Definition
Na-urate deposition in joints |
|
|
Term
Adenosine deaminase deficiency |
|
Definition
Toxic buildup of adenosine and deoxyadenosine |
|
|
Term
Effects of toxic adenosine/deoxyadenosine buildup (2) |
|
Definition
1) Inhibits DNA synthesis, 2) drives WBC apoptosis |
|
|
Term
Treatment for adenosine deaminase deficiency |
|
Definition
|
|
Term
A good treatment option for tumor lysis syndrome |
|
Definition
|
|
Term
Ethanol metabolism general reactions |
|
Definition
|
|
Term
Enzymes that catalyze EtOH → ethanal (2) |
|
Definition
|
|
Term
Enzyme that catalyzes ethanal → acetate |
|
Definition
|
|
Term
|
Definition
EtOH + NAD → ethanal + NADH |
|
|
Term
|
Definition
Ethanal + NAD → acetate + NADH |
|
|
Term
|
Definition
EtOH + NADPH + O2 → ethanal + NADP + H2O |
|
|
Term
Km of MEOS vs. alcohol DH |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
MEOS is in what superfamily of enzymes |
|
Definition
|
|
Term
|
Definition
|
|
Term
Anabuse inhibits what enzyme and leads to what |
|
Definition
Inhibits aldehyde DH leading to buildup of ethanal |
|
|
Term
|
Definition
|
|
Term
Methanol metabolsim general reactions |
|
Definition
MeOH → formaldehyde → formic acid |
|
|
Term
Consequences of methanol metbolism (3) |
|
Definition
1) Formic acid toxic to CN II, 2) anion gap metabolic acidosis, 3) saturation of formyl-THF synthesis (not bad in itself) |
|
|
Term
Treatments of methanol poisoning (4) |
|
Definition
1) 4-Methylpyrazole, 2) EtOH, 3) hemodialysis, 4) NOT bicarbonate |
|
|
Term
Why is bicarbonate not given for methanol poisoning |
|
Definition
Suppressing breathing response to metabolic acidosis |
|
|
Term
Ethylene glycol metabolism general reactions (2) |
|
Definition
1) Ethylene glycol → oxalate, 2) ethylene glycol → glycolate → oxalate |
|
|
Term
|
Definition
Ca2+ chelator in renal tubules → shreds tubules |
|
|
Term
Alcoholic ketosis consequences |
|
Definition
1) High lactate, 2) high ketones, 3) elevated β-hydroxybutyrate/acetoaldehyde ratio (10x higher), 4) maybe normal pH, 5) cortisol, 6) adrenalin |
|
|
Term
Will dipstick catch alcoholic ketosis |
|
Definition
|
|
Term
Why might pH be normal in alcoholic ketosis |
|
Definition
Acidosis offset by vomitting |
|
|
Term
What is the β-hydroxybutyrate/acetoacetate ratio in alcoholic keotis |
|
Definition
20:1 to 30:1 [10x normal 2:1 to 3:1 ratio] |
|
|
Term
What drives high β-hydroxybutyrate/acetoacetate ratio |
|
Definition
|
|
Term
High NADH:NAD ratio drives what (2) |
|
Definition
1) Inability to form Pyr from Lac, 2) OAA pushed to malate → ketones |
|
|
Term
Malnutrition deficits that setup alcoholic ketosis (4) |
|
Definition
1) Liver glycogen absence, 2) glucagon induction, 3) insulin suppression, 4) gluconeogesis |
|
|
Term
Longer the fatty acid: higher or lower boiling point |
|
Definition
|
|
Term
More cis bonds: higher or lower boiling point |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
What FA's discussed are ω-3 (2) |
|
Definition
|
|
Term
What FA's discussed are ω-6 (3) |
|
Definition
1) Linoleic, 2) linolenic, 3) arachidonic |
|
|
Term
Describe what is on lysophosphatidic acid |
|
Definition
sn-1=FA, sn-2=nothing, sn-3=PO4 |
|
|
Term
Describe what is on phosphatidic acid |
|
Definition
|
|
Term
Membrane phospholipids: which position usually has saturated FA |
|
Definition
|
|
Term
Membrane phospholipids: which position usually has unsaturated FA |
|
Definition
|
|
Term
Membrane phospholipid: name the type with -CH2-CH2-NH3 on sn-3's PO4 |
|
Definition
|
|
Term
Membrane phospholipid: name the type with -CH2-CH2-N(CH3)3 on sn-3's PO4 |
|
Definition
|
|
Term
Membrane phospholipid: name the type with -CH2-CH(CHOO)-NH3 on sn-3's PO4 |
|
Definition
|
|
Term
Membrane phospholipid: name the type with -CH2-CH(OH)-CH2-OH on sn-3's PO4 |
|
Definition
|
|
Term
Cardiolipin has what structure |
|
Definition
Two phosphatidic acids joined by a glycerol |
|
|
Term
Describe what is on plasmalogens |
|
Definition
sn-1 is ether-linked alkene, sn-2=FA, sn-3=PO4-choline |
|
|
Term
Describe what is on platelet-activating factor |
|
Definition
sn-1 is ether-linked alkane, sn-2=acetyl ester, sn-3=PO4-choline |
|
|
Term
|
Definition
Dipalmitoyl phosphatidylcholine |
|
|
Term
Phospholipase A1 cleaves where |
|
Definition
|
|
Term
Phospholipase A2 cleaves where |
|
Definition
|
|
Term
Phospholipase B cleaves where |
|
Definition
|
|
Term
Phospholipase C cleaves where |
|
Definition
Before P on phosphate on sn-3 |
|
|
Term
Phospholipase D cleaves where |
|
Definition
After P on phosphate on sn-3 |
|
|
Term
Which phospholipase cleaves off IP3 |
|
Definition
|
|
Term
|
Definition
Dephosphorylates IP3 to IP2 |
|
|
Term
Glucocorticoids ___ [inhibit or induce] transcription of ____ in adipocytes |
|
Definition
|
|
Term
Glucocorticoids ___ [inhibit or induce] transcription of ____ in hepatocytes |
|
Definition
|
|
Term
Steroids reduce concentration of what |
|
Definition
|
|
Term
|
Definition
1) HPETE, 2) leukotrienes |
|
|
Term
|
Definition
1) Prostaglandins, 2) thromboxane |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Which COX is constituitive |
|
Definition
|
|
Term
Which COX is induced by inflammation |
|
Definition
|
|
Term
Which COX is in most tissues |
|
Definition
|
|
Term
After aspirin takes effect, what product change is there |
|
Definition
Shift to make anti-inflammatory |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Suggested ratio of ω-6 to ω-3 ratio |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
Non-enzymatically by reactive oxygen species |
|
|
Term
|
Definition
A biomarker for oxidative stress |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Sugar for cerebroside from (2) |
|
Definition
1) Glc from UDP-Glc, 2) Gal from UDP-Gal |
|
|
Term
|
Definition
Ceremide + PO4-choline on sn-3 |
|
|
Term
|
Definition
Group of cerebrosides & gangliosides |
|
|
Term
Glycosphingolipids have what charge |
|
Definition
|
|
Term
Sphingomyelins have what charge |
|
Definition
|
|
Term
|
Definition
Ceremide + one or more sialic acids |
|
|
Term
Gangliosides have what charge |
|
Definition
|
|
Term
|
Definition
Ganglioside + sulfated galactosyl |
|
|
Term
Sulfate for sulfatides comes from |
|
Definition
|
|
Term
Cofactor for forming sphingosine |
|
Definition
|
|
Term
In what form are fatty acids added |
|
Definition
|
|
Term
Where are sphingolipids synthesized (2) |
|
Definition
|
|
Term
What degrade sphingolipids |
|
Definition
|
|
Term
Lipid rafts consist of more of what lipids (2) |
|
Definition
1) Cholesterol, 2) sphingolipids |
|
|
Term
Sphingolipids are more commonly found in which membrane leaflet |
|
Definition
|
|
Term
Sphingomyelin is used for |
|
Definition
|
|
Term
Signaling: ceremides signal what type of thing |
|
Definition
|
|
Term
Signaling: sphingosines signal what type of thing |
|
Definition
|
|
Term
Signaling: sphingosine-1-P signal what type of thing |
|
Definition
Proliferation, inflammation, anti-apoptosis |
|
|
Term
Examples of sphingolipid breakdown deficiencies (4) |
|
Definition
1) Gaucher, 2) Niemann-Pick, 3) Fabry, 4) Tay-Sachs |
|
|
Term
|
Definition
Accumulation of sphingolipid from lack of an enzyme |
|
|
Term
Lipid storage disease: genetic inheritance pattern |
|
Definition
|
|
Term
|
Definition
Excess absorption of plant sterols |
|
|
Term
|
Definition
1) Cholesterol, 2) ergosterol, 3) sitosterol |
|
|
Term
Does cholesterol cross blood brain barrier: yes or no |
|
Definition
|
|
Term
Is cholesterol essential: yes or no |
|
Definition
|
|
Term
|
Definition
|
|
Term
What enzyme: ACoA + AACoA → HMG-CoA |
|
Definition
|
|
Term
Committed step of cholesterol synthesis |
|
Definition
|
|
Term
HMG-CoA reductase reaction |
|
Definition
HMG-CoA + 2 NADPH → mevalonate + 2 NADP |
|
|
Term
Mevalonate is used to make ____ |
|
Definition
|
|
Term
Two activated isoprenes are combined to make |
|
Definition
|
|
Term
Geranyl pyrophosphate is combined with activate isoprene to make |
|
Definition
|
|
Term
Two farnesyl pyrophosphates are combined to make |
|
Definition
|
|
Term
Squalene is cyclized to make |
|
Definition
|
|
Term
Steps to convert lanosterol to cholesterol (3) |
|
Definition
1) Δ5 desaturation, 2) Δ7 reduction, 3) Δ24 reduction |
|
|
Term
Adding a fatty acid to cholesterol makes |
|
Definition
|
|
Term
Other things made from the cholesterol pathway (5) |
|
Definition
1) Isopentyl-tRNA, 2) prenylated proteins, 3) heme, 4) dolichol, 5) ubiquinon (CoQ) |
|
|
Term
Two general modes for cholesterol regulation |
|
Definition
1) Inhibit bile resorption, 2) inhibit cholesterol synthesis |
|
|
Term
Smith-Lemil-Optiz syndrome |
|
Definition
|
|
Term
HMG-CoA reductase: inhibited or actived by insulin |
|
Definition
|
|
Term
|
Definition
Uptake of free cholesterol in intestinal lumen |
|
|
Term
|
Definition
Excretes cholesterol from the cell |
|
|
Term
|
Definition
Transfers cholesterol out of the endosome-lysosome |
|
|
Term
__% of cholesterol in the brain is in lipid rafts & myelin |
|
Definition
|
|
Term
Extrahepatic cells get cholesterol from what structure |
|
Definition
|
|
Term
Typical cholesterol form in neurons |
|
Definition
|
|
Term
What accumulates in atherosclerotic plaques |
|
Definition
|
|
Term
|
Definition
Makes cholesterol esters for intracellular & ER |
|
|
Term
|
Definition
Makes cholesterol esters for plasma, lipoproteins, HDL's |
|
|
Term
LCAT takes FA's from what position on a TAG |
|
Definition
|
|
Term
|
Definition
1) Cholesterol, 2) phosphatidylcholine, 3) pigments, 4) salts, 5) bicarbonate |
|
|
Term
Bile acids we care about (2) |
|
Definition
1) Cholic acid, 2) chenodeoxycholic acid |
|
|
Term
__% of cholesterol is lost to feces (vs. resorption of bile) |
|
Definition
|
|
Term
Synthesis of steroids from |
|
Definition
|
|
Term
First reaction of steroid synthesis is where |
|
Definition
|
|
Term
Last common intermediate of steroid synthesis |
|
Definition
|
|
Term
Steroid products of pregnenolone (4) |
|
Definition
1) Aldosterone, 2) cortisol, 3) androgens, 4) estrogens |
|
|
Term
# of carbons in cholesterol |
|
Definition
|
|
Term
# of carbons in pregnenolone |
|
Definition
|
|
Term
# of carbons in aldosterone |
|
Definition
|
|
Term
|
Definition
|
|
Term
# of carbons in androgens |
|
Definition
|
|
Term
# of carbons in estrogens |
|
Definition
|
|
Term
HMG-CoA reductase: inhibited or actived by glucagon |
|
Definition
|
|
Term
HMG-CoA reductase: inhibited or actived by EPI |
|
Definition
|
|
Term
HMG-CoA reductase: inhibited or actived by phosphorylation |
|
Definition
|
|
Term
HMG-CoA reductase: inhibited or actived by cholseterol |
|
Definition
|
|
Term
SREBP is bound to insig-1 under ___ [high or low] cholesterol |
|
Definition
|
|
Term
Under low cholesterol, SREBP makes it way where |
|
Definition
|
|
Term
What finally breaks apart SREBP |
|
Definition
|
|
Term
Final/active piece of SREBP goes where and does what |
|
Definition
Goes to nucleus and does gene expression things |
|
|
Term
|
Definition
|
|
Term
Liganded FXR goes where and does what |
|
Definition
Translocates to nucleus and reppresses 7α-hydroxylase |
|
|
Term
Activation of FXR leads to ____ [increasing or decreasing] body cholesterol |
|
Definition
|
|
Term
How are oxysterols produced |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
Increases sterol excretion |
|
|
Term
Activation of LXR leads to ____ [increasing or decreasing] body cholesterol |
|
Definition
|
|
Term
Chylomicrons are significant in what molecule: TAG, cholesterol esters, or protein |
|
Definition
|
|
Term
VLDL have high levels of what molecule: TAG, cholesterol esters, or protein |
|
Definition
|
|
Term
LDL have high levels of what molecule: TAG, cholesterol esters, or protein |
|
Definition
|
|
Term
HDL have high levels of what molecule: TAG, cholesterol esters, or protein |
|
Definition
|
|
Term
Lipoproteins in chylomicrons (3) |
|
Definition
1) ApoB-48, 2) ApoC, 3) ApoE |
|
|
Term
|
Definition
1) ApoB-100, 2) ApoC, 3) APoE |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Lipoprotein unique to chylomicrons |
|
Definition
|
|
Term
LDL receptor recognizes what lipoproteins (2) |
|
Definition
|
|
Term
Proteins involved in HDL metabolism (6) |
|
Definition
1) ABCA1, 2) ABCG1, 3) LCAT, 4) CETP, 5) SR-B1, 6) hepatic lipase |
|
|
Term
CETP transfers what from HDL to VLDL |
|
Definition
|
|
Term
CETP transfers what from VLDL to HDL |
|
Definition
|
|
Term
7α-hydroxylase deficiency: which bile acid pathway is lost: classic or acidic |
|
Definition
|
|
Term
27-hydroxylase deficiency: which bile acid pathway is lost: classic or acidic |
|
Definition
|
|
Term
Treatment of 7α- or 27-hydroxylase deficiency |
|
Definition
|
|
Term
What do macrophages and epithelia take up that makes them "foam cells" |
|
Definition
|
|
Term
Familial hypercholesterolemia caused by |
|
Definition
|
|
Term
Which steroid synthesis deficits cause a loss of androgens (2) |
|
Definition
1) 3β-hydroxysteroid DH, 2) 17α-hydroxylase |
|
|
Term
Which steroid synthesis deficits cause an excess of androgens (2) |
|
Definition
1) 21-hydroxylase, 2) 11β-hydroxylase |
|
|
Term
Lipid-soluble vitamins (4) |
|
Definition
|
|
Term
Which lipid-soluble vitamins affect transcription (2) |
|
Definition
|
|
Term
|
Definition
Reinol → retinoic acid → retinoic acid binding protein → transcription |
|
|
Term
|
Definition
1) PPARα, 2) PPARΒ/γ, 3) PPARδ |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
Adipocyte & skeletal muscle |
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Term
Effect of interrupting retinol pathway |
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Definition
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Definition
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Term
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Definition
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Definition
Carboxylation of glutamyl residues |
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Definition
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Definition
Leptin → leptin receptor → phosphorylated STAT → dimerizes → is a transcription factor |
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Definition
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Definition
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Definition
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Definition
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Definition
Deficit of enzyme that converts to 1,25-dihydroxycholecalciferol |
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Term
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Definition
1) Bone resorption, 2) deposition of calcium |
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Term
Metabolic syndrome problems (5) |
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Definition
1) Insulin resistance, 2) hyperglycemia, 3) dyslipidemia, 4) hypertension, 5) prothromic & proinflammatory states |
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