The Pyruvate Dehydrogenase Complex converts pyruvate into Ac…

The Pyruvate Dehydrogenase Complex converts pyruvate into Acetyl CoA and then determines whether this molecule will enter into the TCA cycle or continue on to Fatty Acid Synthesis. Regulation includes: Allosteric feedback inhibition from [drop1] which blocks dihydrolipoyl transacetylase and [drop2] which inhibits dihydrolipoyl dehydrogenase. Covalent modification deactivates Pyruvate Dehydrogenase by means of a [drop3] enzyme and reactivates it by means of a [drop4] enzyme. Finally, [Drop5] activates pyruvate dehydrogenase and [drop6] inhibits it. 

There are four enzymes of gluconeogenesis that circumvent th…

There are four enzymes of gluconeogenesis that circumvent the irreversible steps in glycolysis.  When starting with the substrate pyruvate or lactate they are [drop1] The enzymes that remove phosphate groups during the process of gluconeogenesis and circumvent two of the three irreversible reactions of glycolysis are [drop2]

Use the sample enzyme reaction scheme below to answer the fo…

Use the sample enzyme reaction scheme below to answer the following:    What is the kcat?  [drop1] S-1 What is the Km ? [drop2] M What is the Vmax? Enzyme concentration is 2×10-8 M [drop3] M/S When 2mM inhibitor is added to the reaction, the Km remains unchanged while the Vmax, app = 2×10-5 M/S. What type of inhibition is this? [drop4]