A research group discovers a new version of happyase, which they call happyase*, that catalyzes the chemical reaction: HAPPY.-SAD The researchers begin to characterize the enzyme. The researchers determined the kcat of the enzyme to be 555 s1. In a separate experiment with [EJ at 3.2 nM and (HAPPY) at 55 µM, the researchers find that Vo is equal to 220 nM s1. What is the measured Km of happyase* for its substrate HAPPY? Make sure to include units in the answer.
Enzyme kinetics
In biochemistry, enzymes are proteins that act as biological catalysts. Catalysis is the addition of a catalyst to a chemical reaction to speed up the pace of the reaction. Catalysis can be categorized as either homogeneous or heterogeneous, depending on whether the catalysts are distributed in the same phase as that of the reactants. Enzymes are an essential part of the cell because, without them, many organic processes would slow down and thus will affect the processes that are important for cell survival and sustenance.
Regulation of Enzymes
A substance that acts as a catalyst to regulate the reaction rate in the living organism's metabolic pathways without itself getting altered is an enzyme. Most of the biological reactions and metabolic pathways in the living systems are carried out by enzymes. They are specific for their works and work in particular conditions. It maintains the best possible rate of reaction in the most stable state. The enzymes have distinct properties as they can proceed with the reaction in any direction, their particular binding sites, pH specificity, temperature specificity required in very few amounts.
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