Metabolism Flashcards
What is fomepizole
Antidote for alcohol poisoning
It inhibits alcohol dehydrogenase
What is disulfiram
Inhibits acetaldehyde dehydrogenase causing acetylaldehyde to accumulate making the patient feel hungover.
Treats alcoholism.
What does alcohol metabolism depend on?
Depends mostly on NAD + being converted to NADH
Phosphofructokinase 1
rate determening enzyme for glycolysis
Fructose - 1,6 bisphosphatase
Rate limiting enzyme for gluconeofenesis
Isocitrate dehydrogenase
TCA cycle rate limiting enzyme
Glycogen synthase
Glycogenesis Rate limiting enzyme
Glycogen phosphorylase
Glycogenolysis RLE
Glucose 6 phosphate dehydrogenase
HMP Shunt RLE
Important for NADPH formation
Carbamoyl phosphate synthetase II
De novo pyrimidine synthesis RLE
Glutamine-phosphoribosylpyrophosphate amidotransferase (PRPP)
De nobo purine synthesis RLE
Carbamoyl phosphate synthetase I
Urea cycle RLE
Acetyl-CoA carboxylase
Fatty acid synthesis RLE
Carnitine acyltransferase I
Fatty acid oxidation RLE
HMG-CoA synthase
Ketogenesis RLE
HMG-CoA Reductase
Cholesterol synthesis RLE
First enzyme in the TCA?
Citrate synthase takes Acetyl-CoA to make isocitrate.
Outside sourcs of odd chain fatty acids, branched chain amino acids, and methionine can enter the TCa through what form?
Succinyl CoA
the urea cycle can input into the TCA through which form?
Through fumarate formation.
At the expense of also creating urea.
what enzyme is specifically inhibited by Arsenic?
Lipoic acid resulting in vomiting, rice water stools, and garlic breath.
Patient is unable to link glycolysis and TCA cycle through mitochondria.
what molecule does the TCA utilize in its formation of products?
Utilizes Acetyl-Coa to create NADH, FADH, CO2 and GTP`
What is the starting substrate of the TCA?
Citrate.
Ends as oxaloacetate.
which steps of the TCA create NADH?
Isocitrate from citate
Succinyl coa from isocitrate
Oxaloacetate from malate
Which part of the TCA results in FADH2 formation?
Succinate to fumarate