biological source
bovine (calf) intestine
form
solution
specific activity
~3,000 U/mg enzyme protein (+37°C, 4-nitrophenyl phosphate substrate, diethanolamine as buffer)
packaging
pkg of 1.5 mL (15 mg)
manufacturer/tradename
Roche
optimum pH
9.8
pH range
9.0-11.0
shipped in
wet ice
General description
Orthophosphoric-monoester phosphohydrolase (alkaline optimum)
Amino groups: 8-16 moles/mole enzyme
Amino groups: 8-16 moles/mole enzyme
Application
Alkaline phosphatase can be coupled to other proteins via its amino groups. The enzyme solution can be used directly for conjugation without prior dialysis.
Physical form
Solution, ready-to-use, 10mg/ml
Preparation Note
Storage conditions (working solution): The diluted enzyme (1:10 in 3 M NaCl) will give a stability of 6 months at 4 °C.
1:10 dilution in water will give stability for 1 week at 4°C.
Do not freeze the diluted or undiluted enzyme, because freezing will destroy enzyme activity.
1:10 dilution in water will give stability for 1 week at 4°C.
Do not freeze the diluted or undiluted enzyme, because freezing will destroy enzyme activity.
Store at 2 to 8 °C. (Do not freeze)
Analysis Note
Purity: single peak (HPLC)
Other Notes
Purification procedure
AP from intestine is a dimeric glycoprotein, it is not known, whether the carbohydrate part is separated during purification procedure. Content of amino groupsIn the literature the carbohydrate content is 2 to 20 percent so one should find approx. 70 amino groups/mol.
In addition one researcher determined the amino groups and found 50 to 60 lysins/mol.-SH groups in AP
No information in literature about -SH groups in AP.
Carbohydrate structure
Results of investigation of the carbohydrate structure of several lots of alkaline phosphatase are available.
NH2- and carbohydrate estimation
Results of NH2- and carbohydrate estimation are available.
AP from intestine is a dimeric glycoprotein, it is not known, whether the carbohydrate part is separated during purification procedure. Content of amino groupsIn the literature the carbohydrate content is 2 to 20 percent so one should find approx. 70 amino groups/mol.
In addition one researcher determined the amino groups and found 50 to 60 lysins/mol.-SH groups in AP
No information in literature about -SH groups in AP.
Carbohydrate structure
Results of investigation of the carbohydrate structure of several lots of alkaline phosphatase are available.
NH2- and carbohydrate estimation
Results of NH2- and carbohydrate estimation are available.
For life science research only. Not for use in diagnostic procedures.
Unit Conversion: Approx. 4.35 U (EIA grade AP) [37 °C, 4-NPP as substrate, diethanolamine as buffer, pH 9.8] = 1 U [+25 °C, 4-NPP as substrate, glycine as buffer, pH 10.5]
1.0 U [+37 °C, QC assay conditions] = 0.73 U [+30 °C, QC assay conditions] = 0.48 U [+25 °C, QC assay conditions]
1.0 U [+37 °C, QC assay conditions] = 0.73 U [+30 °C, QC assay conditions] = 0.48 U [+25 °C, QC assay conditions]
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