Kcat Calculator

Calculate the catalytic constant ($k_{cat}$), also known as the turnover number, for an enzyme. This value represents the maximum number of substrate molecules converted to product per enzyme active site per unit time.

Turnover Number (kcat)

FAQ

What is the unit of kcat?

The unit of kcat is typically reciprocal time (e.g., s⁻¹ or min⁻¹), representing the number of substrate molecules converted per second.

How is kcat related to Vmax?

kcat is calculated by dividing the maximum reaction velocity (Vmax) by the total enzyme concentration [Et].