10567752001
Roche
Alkaline Phosphatase
EIA grade, from calf intestine
Synonym(s):
AP, Alkaline Phosphatase
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About This Item
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biological source
bovine (calf) intestine
Quality Level
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.
Quality
Purity: single peak (HPLC)
Sequence
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.
Unit Definition
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]
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.
Storage and Stability
Store at 2 to 8 °C. (Do not freeze)
Other Notes
For life science research only. Not for use in diagnostic procedures.
WGK
WGK 1
Flash Point(F)
does not flash
Flash Point(C)
does not flash
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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