Enzymatic Activity Converter
Convert between different enzymatic activity units like katals and enzyme units.
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Unit Information
Enzyme Unit (U)
Definition: A unit of enzyme activity equal to 1 μmol of substrate converted per minute.
History: Traditional unit used before the adoption of the katal.
Current Use: Still widely used in biochemistry and diagnostics.
Katal (kat)
Definition: The SI unit of catalytic activity, equal to one mole of substrate converted per second.
History: Adopted as SI unit in 1999.
Current Use: Standard unit for catalytic activity in scientific applications.
Millikatal (mkat)
Definition: A unit of catalytic activity equal to one thousandth of a katal (10⁻³ kat).
History: Common engineering and lab unit.
Current Use: Used in clinical chemistry and biochemistry.
Kilokatal (kkat)
Definition: A unit of catalytic activity equal to one thousand katals (10³ kat).
History: Used to express very high enzyme activities.
Current Use: Industrial enzymology and large-scale processes.
Millienzyme unit (mU)
Definition: A unit equal to 10⁻³ enzyme units (mU).
History: Common in clinical diagnostics.
Current Use: Reporting enzyme levels in lab tests.
Microenzyme unit (μU)
Definition: A unit equal to 10⁻⁶ enzyme units (μU).
History: Used for very low enzyme concentrations.
Current Use: Sensitive enzyme assays.
Nanoenzyme unit (nU)
Definition: A unit equal to 10⁻⁹ enzyme units (nU).
History: Used for extremely low activities.
Current Use: Specialized research applications.
Kiloenzyme unit (kU)
Definition: A unit equal to 10³ enzyme units (kU).
History: Used for bulk enzyme quantities.
Current Use: Biotechnology and industry.
Megaenzyme unit (MU)
Definition: A unit equal to 10⁶ enzyme units (MU).
History: Used for very large quantities of enzymes.
Current Use: Industrial applications.
International Unit (IU) (IU)
Definition: Alias of the enzyme unit (U), equal to the amount of enzyme that catalyzes 1 micromole of substrate per minute.
History: Widely used in clinical and research labs as an alternative notation to U.
Current Use: Interchangeable with U in reports and specifications.
All Unit Conversions
Did you know?
- Enzyme units measure the activity of enzymes.
- The katal is the SI unit for enzymatic activity.
- Enzymatic activity is important in medicine and biological research.
- IU is an alias for the Enzyme Unit (U) and is used interchangeably in lab reports.