2-Cys Peroxiredoxin Activity Assay Kit Quantitative Assay, suitable for detection of Prx I, II, III, IV, V via Spectrophotometric UV/Vis at 340nm, sufficient for 100 reactions, ultra accurate, ready-to-use, quick protocol, hyper sensitive, high reproducibility

Ordering information PRODUCT CODE PR-5011K-100RXN UNIT PRICE $ 1,798.00 ($17.98 / Assays) AVAILABILITY In Stock  Ready-to-ship On Oct 29, 2021 FULFILLMENT BY LABSCOOP - SHIPS FROM LITTLE ROCK, AR 72201
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Peroxiredoxins (Prx) are a family of peroxidase proteins that reduce peroxides in the cells. In addition to reduction of peroxides these proteins are also implicated in many cellular functions such as differentiation, proliferation, and apoptosis. There are six different members of the mammalian peroxiredoxin family which are grouped as 2-Cys or 1-Cys peroxiredoxins. Peroxiredoxin isoenzymes I-V depend on reduced Thioredoxin for their reducing action. These are known as 2-Cys peroxiredoxins. Prx I is known to be involved in tumor suppression as an inhibitor of tyrosine kinase, and has been shown to be overexpressed in lung cancer. The overexpression of Prx I, II, V and VI has been shown to be increased in breast cancer. The levels of Prx I and Prx II has been shown to be significantly increased in Alzheimer’s disease. Recent studies have shown that mammalian peroxiredoxins are inactivated by oxidation of active site cysteine residues. In addition, recent studies have indicated that this oxidation process is reversible. Therefore, determination of activity of Prx is crucial in attributing biological function of Prx in conditions of oxidative stress in cancer, neurodegenerative diseases and in other diseases.

Mammalian 2-Cys peroxiredoxins are cellular peroxidases that reduce peroxides in the presence of Thioredoxin. Thioredoxin is oxidized in the process and is regenerated by Thioredoxin reductase that utilizes reducing equivalents from NADPH. In our assay method E.coli Trx and mammalian Thioredoxin reductase (TrxR) are used to provide reducing power to 2-Cys-Peroxiredoxins for reduction of peroxides such as hydrogen peroxide. The utilization of NADPH for the reduction of peroxides is monitored as the decrease in absorbance of NADPH at 340 nm. Specific activity is the amount of NADPH oxidized per minute per milligram of protein. A reaction blank is utilized in the absence of Thioredoxin to determine the non-specific decrease in the level of NADPH by mammalian TrxR.

Redoxica's 2-Cys-Peroxiredoxin Activity Assay Kit has undergone extensive testing with a multitude of lysate types, has been published in dozens of leading scientific journals and after a decade since its market debut has been established as the undisputed leader in the detection and activity measurement of 2-cys-peroxiredoxin. We developed the assay by utilizing core principles of biochemistry to ensure optimal accuracy, sensitivity, and reproducibility accompanied by a quick and easy to use protocol.


Unit of Measure Assays
Shelf Life 24 MONTHS
Made In United States of America
Components • Peroxiredoxin Assay Buffer (2 x 50 mL bottles, Store at 2-8°C)
• Thioredoxin (2 x 250 μL vial, Store at -20°C)
• Thioredoxin Reductase (2 x 150 μL vial, Store at -20°C)
• β-NADPH (2 vials, Store at: -20°C, use within 3-4 hours of reconstitution, keep reconstituted NADPH on ice, not recommended for storage)
• Substrate Solution (1mL vial, Store at 2-8°C, light sensitive)
Required Materials Not Included • Spectrophotometer equipped to perform enzyme kinetics with UV/VIS range.
• Quartz micro cuvettes capable of reading 50-300 µl volume in a 1-cm light path. Make sure that you use the right kind of micro-quartz cuvette for a specific spectrophotometer as they may vary.
Format Micro-cuvette
Synonyms Peroxiredoxin Activity Assay Kit, 2-Cys-Peroxiredoxin Activity Assay Kit, Peroxiredoxin 1 Assay Kit, Peroxiredoxin I Assay Kit, Prx 1 Assay Kit, Prx I Assay Kit, Peroxiredoxin 2 Assay Kit, Peroxiredoxin II Assay Kit, Prx 2 Assay Kit, Prx II Assay Kit, Peroxiredoxin 3 Assay Kit, Peroxiredoxin III Assay Kit, Prx 3 Assay Kit, Prx III Assay Kit, Peroxiredoxin 4 Assay Kit, Peroxiredoxin IV Assay Kit, Prx 4 Assay Kit, Prx IV Assay Kit, Peroxiredoxin 5 Assay Kit, Peroxiredoxin V Assay Kit, Prx 5 Assay Kit, Prx V Assay Kit, Peroxiredoxin Assay Kit, Prx Assay Kit, PRDX1 Assay Kit, PRDX2 Assay Kit, PRDX3 Assay Kit, PRDX4 Assay Kit, PRDX5 Assay Kit, PRDX Assay Kit, 2-Cys Prx Assay Kit, 2-Cys PRDX Assay Kit


Q. How much is shipping and handling? A. This product is temperature sensitive and does ship on dry ice. For US customers, S&H charges are $95. For international customers, shipping and handling costs will vary based on location and order size. Additional customs/duties/VAT charges may be incurred for international orders.

Q. How do I place an order? A. All Redoxica products are fulfilled by our exclusive global distribution partner, Labscoop. You can place an order via, submit your PO by email to, by fax at 1.800.316.3081 or by phone at 1.800.316.3081.

Q. How do I find pricing and availability? A. The latest pricing and availability is displayed on our website. This is updated in real-time and is the exact same information that our support team and distributors have access to. If you need a formal quotation, please submit a quote request.

Q. Do you offer any discounts? A. We conduct an extensive price analysis on each product we release, so you can be confident that you are getting a great price when comparing the quality of our products, the quantity, and S&H charges. For bulk orders (quantities over 5), please submit a bulk quote request and in most cases we will be able to offer some discounts. For quantities under 5, unfortunately we do not offer any additional discounts.

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Storage Temperature

Recommended to store assay buffer and substrate solution (LIGHT SENSITIVE) at 2-8°C (KEEP REFRIGERATED) and all other kit components at - 20°C (KEEP FROZEN, DRY). For lyophilized kit component storage upon reconsistution please refer to the product insert

Precautions & Disclaimer

For Laboratory Research and Development Use Only. Not for drug, household or other uses.


Shipping Conditions

Dry Ice




Each kit utilizes a variety of packaging materials including borosilicate glass, PET, polybags, magnetic board, crosslinked foam, PVC.

Shipping Weight

6.00 LBS

Shipping Dimensions

12" X 12" X 12"

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