Product Catalog

Alkaline Phosphatase

20 U/µl


Catalog NumberPack size
110970750011,000 U (20 U/µl)Order 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: This preparation has a high concentration of enzyme (20 U/μl), which is convenient for large-scale experiments.  A lower concentration (1 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 incubate 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, 20 U/μl, in buffer, pH 7.6 (20o C)

Additional Information

US Material Safety Data Sheets

EC Material Safety Data Sheets

Package Inserts/Product Instructions


Product Literature

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