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P4653

Sigma-Aldrich

Phosphatase, Alkaline from bovine kidney

lyophilized powder, ≥5 units/mg protein (Activity determined in diethanolamine buffer, pH 9.8)

Synonym(s):

Alkaline phosphatase, Orthophosphoric-monoester phosphohydrolase (alkaline optimum)

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About This Item

CAS Number:
Enzyme Commission number:
EC Number:
MDL number:
UNSPSC Code:
12352204
eCl@ss:
42010105

form

lyophilized powder

specific activity

≥5 units/mg protein (Activity determined in diethanolamine buffer, pH 9.8)

composition

Protein, ~35% biuret

storage temp.

−20°C

Application

Alkaline phosphatase is used for conjugation to antibodies and other proteins for ELISA, Western blotting, and histochemical detection. It is routinely used to dephosphorylate proteins, such as casein, and nucleic acids. It may be used for protein labeling when high sensitivity is required. Alkaline phosphatase may be also be used to dephosphorylate the 5′-termini of DNA or RNA to prevent self-ligation. DNA or RNA can also be tagged with radiolabeled phosphate (via T4 polynucleotide kinase) after dephosphorylation with alkaline phosphatase.. Product P4653 is from bovine kidney and is provided as a lyophilized powder containing Tris-citrate buffer salts.

Biochem/physiol Actions

Alkaline phosphatase dephosphorylates proteins and nucleic acids.

Unit Definition

One unit will hydrolyze 1 μmole of 4-nitrophenyl phosphate per minute at pH 9.8 at 37 °C. Previously sold in "glycine" units.

Physical form

Lyophilized powder containing Tris-citrate buffer salts

Analysis Note

Assays in Tris buffer, pH 10.2 give activity approx. 2X that in the glycine buffer system. Assays in diethanolamine buffer, pH 9.8 give activity approx. 5X that of the glycine buffer system.
Protein determined by biuret

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

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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M Nemir et al.
The Journal of biological chemistry, 264(30), 18202-18208 (1989-10-25)
We have reported previously that the 69-kDa major phosphoprotein, secreted by normal rat kidney (NRK) cells, is osteopontin, a glycosylated bone matrix protein. Here we show that this 69-kDa osteopontin is secreted by NRK cells in both phosphorylated (pp69) and
Naomi Ofer et al.
The Journal of biological chemistry, 288(16), 11287-11293 (2013-03-09)
Protein degradation via prokaryotic ubiquitin-like protein (Pup) tagging is conserved in bacteria belonging to the phyla Actinobacteria and Nitrospira. The physiological role of this novel proteolytic pathway is not yet clear, although in Mycobacterium tuberculosis, the world's most threatening bacterial
Gouri Chaudhuri et al.
Indian journal of biochemistry & biophysics, 50(1), 64-71 (2013-04-27)
The hydrolysis of p-nitrophenyl phosphate (pNPP) by calf intestinal alkaline phosphatase (CIAP) was investigated with respect to kinetic parameters such as V(max), K(m) and K(cat) under varying pH, buffers, substrate concentration, temperature and period of incubation. Highest activity was obtained
I V Zverinskiĭ et al.
Biomeditsinskaia khimiia, 59(1), 90-96 (2013-05-09)
On the eighth day after ligation of the common bile duct in rats a significant increase in the serum content of total lipids, cholesterol bilirubin and ALT, alkaline phosphatase, and gamma-glutamyltransferase was observed. In the microsomal fraction there was a
George C Ziobro et al.
Journal of food protection, 76(5), 892-898 (2013-05-07)
Over the past 80 years, a variety of methods have been developed to detect underpasteurized or improperly pasteurized milks used in dairy products. Existing methods are hampered by duration of analysis, poor reproducibility, and in some cases the use of

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