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C9409

Sigma-Aldrich

Creatinine Deiminase microbial

lyophilized powder, ≥25 units/mg protein

Synonym(s):

Creatinine Deaminase

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About This Item

CAS Number:
Enzyme Commission number:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

form

lyophilized powder

specific activity

≥25 units/mg protein

mol wt

~260 kDa

composition

Protein, ≥15% biuret

storage temp.

−20°C

Application

Creatinine Deiminase microbial has been used:
  • to immobilize aminosilylated glass beads based biosensor for ammonia/ammonium and creatinine detection in urine
  • in creating creatinine-sensing membrane for biophysical studies
  • to investigate the bioelectronic tongue for the simultaneous determination of urea, creatinine and alkaline ions in clinical samples

Creatinine deiminase has been used in a study to assess the application of a creatinine-sensitive biosensor for hemodialysis control. Creatinine deiminase has also been used in a study to investigate the bioelectronic tongue for the simultaneous determination of urea, creatinine and alkaline ions in clinical samples.

Biochem/physiol Actions

Creatinine deiminase catalyzes the hydrolysis of creatinine to methylhydantoine and ammonia.

Physical properties

Isoelectric point : 4.4
Michaelis constant : 3.5 x 10‾3M (Creatinine)
Structure : 6 subunits per mol of enzyme
Inhibitors : Ag+,Hg++, o-phenanthroline,monoiodoacetate
Optimum pH : 8.5 – 9.5
Optimum temperature : 65 – 75°C
pH Stability : pH 7.0 – 11.0 (30°C, 20hr)
Thermal stability : Below 65°C (pH 7.5, 1hr)

Unit Definition

One unit will hydrolyze 1.0 μmole of creatinine to N-methylhydantoin and NH3 per min at pH 7.5 at 37 °C in a coupled system with L-glutamic dehydrogenase.

Physical form

Lyophilized powder containing mannitol as stabilizer

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Anne K Bendt et al.
Archives of microbiology, 181(6), 443-450 (2004-05-19)
In order to utilize different nitrogen sources and to survive situations of nitrogen limitation, microorganisms have developed several mechanisms to adapt their metabolism to changes in the nitrogen supply. In this communication, the use of creatinine as an alternative nitrogen
Hybrid biosensors for clinical analysis and fermentation control.
I Karube
Methods in enzymology, 137, 131-138 (1988-01-01)
T W Esders et al.
The Journal of biological chemistry, 260(7), 3915-3922 (1985-04-10)
Creatinine iminohydrolase (EC 3.5.4.21), which catalyzes hydrolysis of creatinine to N-methylhydantoin and ammonia, was purified from Flavobacterium filamentosum. The average molecular weight of the purified enzyme was 272,480, and the subunit molecular weight was 44,300. Extensive specificity studies indicated that
[Immobilized enzyme reactors--their use in chemiluminescence detection].
M Tabata et al.
Tanpakushitsu kakusan koso. Protein, nucleic acid, enzyme, 31(3), 220-229 (1986-03-01)
Hsiao-Chung Tsai et al.
Analytical biochemistry, 334(1), 183-192 (2004-10-07)
An optical array biosensor encapsulated with hydrolase and oxidoreductase using sol-gel immobilization technique has been fabricated for simultaneous analysis and screening of multiple samples to determine the presence of multianalytes which are clinically important in relation to renal failure. Urease

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