A katal is indeed a specific amount of enzyme (rather than a reaction rate), but one which is measured with respect to the catalytic activity of the enzyme, rather than with respect to the number of molecules, their weight, or their size. Roughly speaking, one katal is the amount of of enzyme which can convert 1 mole in 1 second.

Enzyme activity = moles of substrate converted per unit time = rate × reaction volume. Enzyme activity is a measure of the quantity of active enzyme present and is thus dependent on conditions, which should be specified. The SI unit is the katal, 1 katal = 1 mol s−1, but this is an excessively large unit.

Aug 20, 2012 · This refers to the turnover number (a.k.a k cat or k 2) of an enzyme and is usually calculated using Michaelis-Menten kinetics.

Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Jun 10, 2021 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

The figure of 350 - 600 Units per mg refers to the specific activity of the enzyme.. The Unit is International Unit or IU and is usually defined as that amount of enzyme that will catalyze the transformation of 1 micromole of substrate (or product) per min, under defined assay conditions (such as pH, temperature, substrate concentration, presence of Mg ++, etc).

Dec 30, 2024 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Nov 2, 2017 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Oct 31, 2020 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Feb 9, 2021 · Definition of a Katal (unit of enzyme activity) 3. How to derive Hill equation (one specific part) 2.