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Why is kcat not necessarily the best way to evaluate or compare the activities of two...

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Chemistry

Why is kcat not necessarily the best way to evaluate or comparethe activities of two enzymes? What “adjustment” can be made tomake the term more useful and why? A) Define the rate constants k1,k2 and k-1. Given k1 of 2x10^-8/M s, k2 of 5x10^3/s, and k-1 of1x10^3/s, what is KD? what is KM? B) Which substrate is preferred:R, for which enzyme X has a KM of 2mM? OR Q, for which X has a KMis 7mM? Explain. If k2 for Q is 2x10^4/s and for R is 4x10^5/s,which substrate yields the best catalytic efficiency? Explain.

Answer & Explanation Solved by verified expert
4.1 Ratings (696 Votes)
Kcat means the turn over frequency or turn over number theseonly deals with the rate at which the enzymesubstrate    See Answer
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