Product Catalog

Alkaline Phosphatase 1 U/µl


Catalog NumberPack size
107130230011,000 U 1 U/µlOrder and Price Information
 


Application

Use this preparation of calf intestinal alkaline phosphatase to remove 5´-terminal phosphates from DNA or RNA. Removal of these phosphate groups is especially useful for enhancing cloning efficiency, since it prevents linearized vector DNA from self-ligating. 

Note: The enzyme concentration in this preparation is 1 U/μl, which is convenient for small-scale experiments.  A higher concentration (20 U/μl) preparation is also available.

Product Description

Brief description: Alkaline phosphatase hydrolyzes 5´-monophosphate groups from both DNA and RNA. It can also hydrolyze 5´-diphosphate and 5´-triphosphate groups from RNA.

Source: calf intestine

Inactivation: Add 1/10 volume of EGTA to the reaction mix and incuabate at 65oC for 10 min. To ensure complete inactivation of enzyme, extract the mix with phenol/chloroform/isoamyl alcohol to remove all protein. 

Background Information

Preventing self-ligation of vectors during cloning
If a linearized vector lacks a 5´-phosphate, it cannot ligate to itself or form concatamers that contain multiple copies of the vector. Thus, the product of the ligation reaction is predominantly recombinant DNA (vector + DNA insert), rather than religated plasmid.

Contents

Solution, 1U/μl, in buffer, pH 7.6 (20o C)

Additional Information

Instructions for Use and Material Safety Data Sheets


Associated Products

Disclaimer

Please go to the online technical support for regulatory and license disclaimers

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