Biochemical Engineering - Enzymes and Kinetics - Discussion

Discussion Forum : Enzymes and Kinetics - Section 1 (Q.No. 5)
5.
The rate-determining step of Michaelis Menten kinetics is
the complex formation step
the complex dissociation step to produce product
the product formation step
Both (a)and(c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Akansha pandey said:   2 weeks ago
As we know, S+E---EScomplex---E+P.

Where s is Substrate which is converted into substrate enzyme complex, this step involve 2 things.

A. Forward or association.
B. Reverse or dissociation.

Which further is converted into product with free enzyme, this step is said to be rate determining step (k2).

Ngobi john said:   9 years ago
It is always assumed that the rate of formation and dissociation of the enzyme-substrate complex is the same but the fact is that the formation rate is always greater than the dissociation rate* km always greater than kd.

Therefore, it is written to say that the dissociation rate does determine the rate.

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