Description
In enzymology, a creatinase (EC 3.5.3.3) is an enzyme that catalyzes the chemical reaction:creatine + H2O↔ sarcosine + urea. Thus, the two substrates of this enzyme are creatine and H2O, whereas its two products are sarcosine and urea. This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amidines. Creatinase accelerates the conversion reaction of creatine and water molecule to sarcosine and urea. It always acts in homodimer state and is induced by choline chloride.
Abbr
Creatinase, Recombinant (E. coli)
Appearance
White lyophilizate
Enzyme Commission Number
EC 3.5.3.3
Activity
> 9 U/mg lyophilizate
Contaminants
catalase < 0.5%
Molecular Weight
ca. 80 kDa
Michaelis Constant
8.6 x 10^-3 M (creatine)
Structure
2 subunits of 48 kDa (SDS-PAGE)
Unit Definition
One unit (U) is defined as the amount of enzyme which produces 1 μmol of urea per min at 37°C and pH 7.7.
Thermal stability
below 53°C
Synonyms
Creatine amidohydrolase; Creatinase; EC 3.5.3.3
