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WVSOM - Biochem
Regulation of FA synthesis and storage
| Question | Answer |
|---|---|
| Glucokinase synthsis is induced by ___________ | insulin |
| PFK2 is activated to make Fructose-2,6 bisphosphate by _____________ | insulin |
| Fructose-2,6 bisphosfate activates | PFK |
| Pyruvate kinase is active when dephosphoylated at | high insulin/glucagon ratios |
| Pyruvate dehdyrogenase is induced by | insulin in addition to intracellular activation |
| Excess NADH in the fed state will inhibit _______ in the Kreb cycle | isocitrate dehydrogenase |
| Inhibition of isocitrate dehydrogenase causes a build up of ____________. | Citrate |
| FA synthesis is induced by _____________ | insulin |
| Acetyl CoA Carboxylase Regulation (4) | 1. CoA carboxylase synthesis is induced by insulin. 2. active when dephosphorylated/inactive when phosphorylated 3. allosterically inhibited by palmitoyl CoA 4. Allosterically activated by citrate |
| What inhibits carnitine trasport of fatty acyl groups into the mitochondrion | Malonyl CoA |
| Lipoprotein lipase synthesis and secretion is induced by ____________. | Insulin |
| Lipoprotein lipase occurs where? | capillary endothelial cells and in adipose and skeletal muscle tissues |
| Whihc has lower Km --> adipose lipoprotein lipase or muscle lipoprotein lipase | Skeletal muscle lipoprotein lipase |
| What happens to FA in muscle | breakdown to CO2 and H2O |
| What happens to FA in adipose | TG storage |
| Insulin's effect on adipocytes | increases glucose availability for glycerol 3 phosphate synthesis |