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P4252

Sigma-Aldrich

Phosphatase, Alkaline from Escherichia coli

ammonium sulfate suspension, 30-90 units/mg protein (modified Warburg-Christian, in glycine buffer)

Synonym(s):
Orthophosphoric-monoester phosphohydrolase (alkaline optimum)
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:
eCl@ss:
42010105
NACRES:
NA.54

biological source

Escherichia coli

Quality Level

form

ammonium sulfate suspension

specific activity

30-90 units/mg protein (modified Warburg-Christian, in glycine buffer)

storage temp.

2-8°C

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Application

Alkaline phosphatase is used for conjugation to antibodies and other proteins for ELISA, Western blotting, and histochemical detection. It may be used for protein labeling when high sensitivity is required. Product P4252 has been used for bulk digestion of tRNA . Product P4252 is provided in the ratio of 30-90 units/mg of protein.
Alkaline phosphatase is used for conjugation to antibodies and other proteins for ELISA, Western blotting, and histochemical detection. It may be used for protein labeling when high sensitivity is required. Product P4252 is an ammonium sulfate suspension in glycine buffer.

Packaging

100, 200, 1000 units in glass bottle

Biochem/physiol Actions

Alkaline phosphatase, from Escherichia coli, is a dimeric, non-glycosylated protein which mainly reside in the periplasmic space. Three known isoforms exist. The enzyme requires zinc, and is activated by magnesium. E. coli akaline phosphatase has a broad specificity for phosphate esters.
Alkaline phosphatase, from Escherichia coli, is a dimeric, non-glycosylated protein which mainly reside in the periplasmic space. Three known isoforms exist. The enzyme requires zinc, and is activated by magnesium. E. coli akaline phosphatase has a broad specificity for phosphate esters.

Caution

Presence of 0.1% SDS in the alkaline phosphatase assays will inhibit any nuclease contamination in the sample.

Unit Definition

One unit will hydrolyze 1.0 μmole of p-nitrophenyl phosphate per min at pH 10.4 at 37 °C.

Physical form

Suspension in 2.5 M (NH4)2SO4

Analysis Note

The activity at pH 8.0 at 25 °C is approximately the same as at pH 10.4 at 37 °C.

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

Certificate of Analysis

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Certificate of Origin

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