After studying a standard textbook, come here for revision. If you find some new helpful information here, i will be happy !
RNA was an early biocatalyst before proteins.
Fastest acting enzyme - Carbonic anhydrase; Kcat is 106 moles per second.
Kcat of DMP decarboxylase is 39 moles per second.
Selective stabilization of high energy transition state is done by enzymes.
Km - [Substrate] @ ½ Vmax
Hill equation is used for kinetics not obeying michaelis menton equation eg. Ligand interactions like Hemoglobin.
Serine kinase acts on serine while Serine protease acts by serine.
Increasing the enzyme concentration won't affect Km. It is a constant for each enzyme.
Most allosteric enzymes are made up of subunits.
Urease needs Nickel.
Only the rate of reaction not the equilibrium is affected by enzymes.
Transition state has higher free energy than substrate or product.
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