PolarScreen™ Androgen Receptor Competitor Assay Kit, Green
PolarScreen™ Androgen Receptor Competitor Assay Kit, Green

PolarScreen™ Androgen Receptor Competitor Assay Kit, Green

The PolarScreen™ Androgen Receptor Competitor Assay Kit, Green, provides a sensitive and efficient method for high-throughput, fluorescence polarization-based screening ofRead more
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Catalog number A15880
Price (USD)
2,130.00
Each
Add to cart
Price (USD)
2,130.00
Each
Add to cart
The PolarScreen™ Androgen Receptor Competitor Assay Kit, Green, provides a sensitive and efficient method for high-throughput, fluorescence polarization-based screening of potential androgen receptor (AR) ligands. The kit uses insect cell-expressed, rat AR-ligand binding domain tagged with glutathione-S-transferase (GST) and histidine (also available separately), plus a novel, high-affinity, fluorescent androgen ligand (Fluormone™ AL Green) in a homogenous, mix-and-read assay format.

This kit produces a green color read-out; a 'red' kit is also available. Both kits suitably determine the IC50s of competitive compounds. Color choice depends on the spectral properties of the compounds to be screened and the available instrumentation. For additional information or assistance contact us at drugdiscoverytech@lifetech.com.

The PolarScreen Androgen Receptor Competitor Assay is:

• Complete & ready-to-use out of the box—all reagents included, just add your test compounds
• High throughput compatible—fluorescence polarization assays in a 384-well plate
• Convenient—components available in bulk sizes for larger screening needs

How the Assay Works
The kit uses the rat AR ligand-binding domain tagged with His and GST [AR-LBD(His-GST)]. AR-LBD(His-GST) is added to a fluorescently-tagged androgen ligand (FluormoneAL Green) in the presence of competitor test compounds in microwell plates. The presence of effective competitors prevents the formation of a AL Green/AR-LBD(His-GST) complex, resulting in a decrease of the polarization value due to ligand displacement caused by a competitor. The shift in polarization value in the presence of test compounds is used to determine relative affinity of test compounds for AR-LBD(His-GST).

Contact us for bulk quantities or for assistance with other nuclear receptor assay needs, from assay development to library screening and beyond.
WARNING: Reproductive Harm - www.P65Warnings.ca.gov
For Research Use Only. Not for use in diagnostic procedures.
Specifications
Quantity800 x 20 μL assays
Product LinePolarScreen™
For Use With (Application)Competitive Binding Assay, Nuclear Receptor Assay
LigandAR
Product TypeAssay Kit
Unit SizeEach
Contents & Storage
1 tube AR Ligand Binding Domain GST/His-tagged Recombinant Protein (store at -68 to -85°C)
1 tube of Fluormone AL Green (store at -5 to -30°C)
2 bottles of Screening Buffer (store at -5 to -30°C)
1 tube of 1 M DTT (store at -68 to -85°C)

Frequently asked questions (FAQs)

I'm using the TaqMan hPSC Scorecard Panel. What if I don't have access to a compatible qRT-PCR system?

The hPSC Scorecard Panel analysis is also available as a service. You can send Thermo Fisher Scientific isolated RNA samples, cDNA samples, or even cells in TRIzol reagent. See Cellmodel Services for more information.

What are the common issues encountered with FP assays?

-No assay window: Check that your instrument is designed to do FP experiments.
-Poor discrimination between the minimum and maximum mP Control (both include the receptor): This may be an indication of the quality of the receptor. Do not make single use aliquots of the receptor or store diluted.
-The type of microplate is critical: Please see if the protocol specifies untreated polystyrene or NBS-coated plates. If the plate binds the fluorescent substrate, it cannot freely rotate and the mP reading will always be high. White plates cannot be used for FP assays. Avoid the use of silanized pipette tips and vials.
-The “No Receptor Control' (free Fluormone/Tracer) should have much higher RFU values compared to buffer alone. If not, there is a problem with the instrument setup or less commonly with the Fluormone/Tracer.
-If the free Fluormone/Tracer mP value is greater than 100 mP or negative, please refer to the user manual for your instrument and reset the G factor.

Find additional tips, troubleshooting help, and resources within our Drug Discovery & Development Support Center.

What is the best type of microplate reader for fluorescence polarization (FP) assays?

For FP assays, plate readers must specifically have FP built in. Please see our instrument compatibility portal (http://www.thermofisher.com/us/en/home/industrial/pharma-biopharma/drug-discovery-development/dd-misc/instrument-compatibility-portal.html).

Find additional tips, troubleshooting help, and resources within our Drug Discovery & Development Support Center.

How can I test the fluorescence polarization (FP) settings of my microplate reader before doing the assay?

We offer a FP One-Step Reference Kit (https://www.thermofisher.com/order/catalog/product/P3088) to detect in green (Ex/Em = 488/535 nm) and red (Ex/Em = 525/590 nm) emission ranges, suitable for the PolarScreen Green and Red Assays. The alternative is to perform the Controls in the respective assay kit prior to performing the actual assay using test compounds.

Find additional tips, troubleshooting help, and resources within our Drug Discovery & Development Support Center.