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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

Quality Level

specific activity

≥25 units/mg protein

mol wt

~260 kDa

composition

Protein, ≥15% biuret

storage temp.

−20°C

Related Categories

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

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