one unit of enzyme
Thomas at hastingslab.harvard.edu
Fri Oct 11 09:22:12 EST 1996
In article <53k3o9$ct0 at babe.lglobal.com>, jefff at lglobal.com (Jeff F) wrote:
> I am wondering if anyone can tell me the definition of one unit of
> Thank you for your time!
> Jeff F
> jefff at lglobal.com
Unit is a former "unit" to describe the catalytic activity of an enzyme.
If you buy 1U of an enzyme you get an amount of enzyme that is able to
convert 1 mikromole of substrate per minute. The actual unit you should
use is Katal, which is a SI-unit and gives the same information in mole
per second, so:
1 U = 1 mikromol/min
1 kat = 1 mol/s (often given as pkat)
Conversion 1 U = 1.667*10-8 kat
Hope that answers your question
Sender: Thomas Urbig
Institute for Molecular and Cellular Biology
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Cambridge, MA 02138
Tel: (USA) 617 495 3716; Fax: (USA) 617 496 8726
Email: Thomas at hastingslab.harvard.edu
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