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PARP Universal Colorimetric Assay Kit

Catalog #: 4677-096-K Datasheet / COA / SDS
For the in vitro screening of candidate PARP-1 inhibitors
Catalog # Availability Size / Price Qty
4677-096-K
Inhibition of PARP Activity by 3-aminobenzamide_4677-096-K
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PARP Universal Colorimetric Assay Kit Summary

Ideal for the in vitro screening of candidate PARP-1 inhibitors and determination of IC50 values.
 

Key Benefits

• Colorimetric readout
• 96 strip-well format
• Sensitive – detects 10 mU PARP /well
• Assay Time ~3 hrs

Why Use the PARP/Apoptosis Colorimetric Assay Kit?

This ELISA based assay detects biotinylated poly (ADP-ribose) deposited by PARP-1 onto immobilized histones in a 96-well format. The addition of Strep-HRP (biotin-binding protein) and a colorimetric HRP substrate yields relative absorbance that correlates with PARP-1 activity.

Product Specifications

For the in vitro screening of candidate PARP-1 inhibitors and determination of IC50 values.

Kit Contents

• 3-Aminobenzamide
• PARP-HSA, 10 Units/µl
• 20X PARP Buffer
• 10X PARP Cocktail
• 10X Activated DNA
• 10X Strep-Diluent
• Histone-Coated Plate Natural Strip Well Plate
• Strep-HRP
• TACS-Sapphire

Specifications

Shipping Conditions
The components for this kit may require different storage/shipping temperatures and may arrive in separate packaging. Upon receipt, store products immediately at the temperature recommended on the product labels.
Storage
Store the unopened product at -20 to -70 °C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Do not use past expiration date.
Species
Multi-species

Limitations

For research use only. Not for diagnostic use.

Product Datasheets

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Product Datasheet
COA

Scientific Data

N/A Inhibition of PARP Activity by 3-aminobenzamide_4677-096-K View Larger

Inhibition of PARP Activity by 3-aminobenzamide. Graphical representation of the colorimetric readout of a PARP standard curve (A) and an inhibition curve for the PARP inhibitor 3-aminobenzamide (provided in the kit). (B) The standard curve is used to translate absorbance values to activity units of PARP.

FAQs

  1. With what species does this kit work?

    • This kit is not species specific. It is suitable for enzymes that will be conserved across all mammals and for tissue homogenates.

  2. What PARP isoform is detected in this kit?

    • This is a universal PARP kit. We expect that all 3 isoforms of PARP will be detected by this kit.

  3. Is the kit capable of measuring PARP hyperactivation (ie. greater than 100% of the PARP positive control)?

    • With this kit, hyperactivation may be possible since it is a cell free system. It is possible that test molecules increase the binding of PARP to the activated DNA or inhibit its dissociation. We are unable to confirm if PARP may become bound to the DNA and trapped within the replication fork or if this would allow for hyperactivation.

  4. What is the ratio of NAD and activated DNA relative to the concentration of enzyme in the final well?

    • The ratio of PARP to DNA is 2:1 and NAD is in excess in the final well.

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