check quantity

Recombinant Protein A, [125I]-, 25µCi (925kBq)

Recombinant Protein A, labeled with 125I. I-125 labeled Protein A can be used as a general tracer to capture antibodies in radioimmunoassays (RIAs).

Please enter valid quantity

Please login to add favorites


Part Number Unit Size List Price Your Price Quantity
NEX146010UC 10 µCi 776.00 USD
NEX146025UC 25 µCi 1257.00 USD
Buy Now

You successfully added item(s) to your cart


We offer radioligands and radiolabeled biomolecules to use as tracers, for radioimmunoassays (RIAs), for autoradiographic visualization, or for performing saturation and competition radioligand binding assays to determine receptor expression levels (Bmax), dissociation constants (Kd), association and dissociation rates (kon and koff), and inhibitor constants (Ki) for a variety of receptors. We develop our radioligands to the highest specific activity possible and provide high purity resulting in low non-specific binding products. Each of our ultra-pure radiolabeled compounds is fully characterized for pharmacological action and validated in binding assays.

Radiochemicals remain the most sensitive method for probing binding biology; yielding unprecedented sensitivity gives results that technicians and scientists can trust. For over 50 years, PerkinElmer has been a leading supplier of New England Nuclear (NEN) radiochemicals, liquid scintillation cocktails, vials and nuclear counting detection instruments.

References for NEX146:

  1. Sorensen, E. B. and Conner, S. D. (2010), γ-Secretase-Dependent Cleavage Initiates Notch Signaling from the Plasma Membrane. Traffic, 11: 1234–1245.
  2. Pruett, B.S., Salvatore, M.F., (2010), GFR α‐1 receptor expression in the aging nigrostriatal and mesoaccumbens pathways, J Neurochem, 115 (3): 707-715.
  3. Di Tano, G., Petrarca, C., Bosco, G., Battista, P., Yang, Z., Morelli, L., Barbacane, R., Loffredo, B. (2009), Identification and Measurement of Carbonic Anhydrase-II Molecule Numbers in the Rat Carotid Body, Open Respir Med J, 3: 67-62.


Concentration 93.2 µCi/mL
Detection Method Radiometric
Fresh Lot Days First and third Monday of each month
Label Position Nominally Labeled
Product Brand Name NEN Radiolabeled Ligands
Radioisotope I-125
Radionuclide 125I
Shipping Condition Ambient
Special Ordering Information This is a radioactive product - shipping address must have a license to receive radioactive materials.
Therapeutic Area Inflammation
Unit Size 25 µCi

Resources, Events & More

Resource Type File Name File Format
Technical Note Low Volume Handling Suggestions for Iodine-125 Labeled Compounds PDF  177 KB
Flyer Using the NENSure Packaging System from PerkinElmer PDF  447 KB