Human Fc mu R/FAIM3 Alexa Fluor® 350-conjugated Antibody

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R&D Systems Antibodies
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Product Details

Human Fc mu R/FAIM3 Alexa Fluor® 350-conjugated Antibody Summary

Species Reactivity
Detects human Fc mu R/FAIM3 in direct ELISAs. Detects human, mouse, and rat Fc mu R/FAIM3 in Western blots.
Monoclonal Mouse IgG1 Clone # 992338
Protein A or G purified from hybridoma culture supernatant
Human embryonic kidney cell line HEK293-derived recombinant human Fc mu R/FAIM3
Accession # O60667
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Alexa Fluor 350 (Excitation= 346 nm, Emission= 442 nm)


Recommended Concentration
Flow Cytometry
0.25-1 µg/106 cells
HEK293 Human Cell Line Transfected with Human FAIM3 and eGFP

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

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Preparation and Storage

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: Fc mu R/FAIM3

The human FAIM3 gene (also known as FCMR or TOSO), is a transmembrane sialoglycoprotein expressed mainly by lymphocytes. FAIM3 is a type I membrane protein with an intracellular C-terminal domain and an extracellular N-terminal domain (1). The extracellular domain has homology to the immunoglobulin variable region domains (1) and FAIM3 is identified as an Fc receptor for IgM (2, 3). The amino acid sequence of human FAIM3 is 58% and 55% identical to that of mouse and rat FAIM3, respectively. FAIM3 was shown to be over-expressed in chronic lymphocytic leukemia (CLL) (4) and associated with disease progression (5, 6). FAIM3 has also been linked to the homeostasis and activation of the innate immune system (7). Interestingly, there is growing evidence that neurodegenerative diseases are associated with the activation of the immune surveillance system. This system is responsible for controlling danger signals and responding accordingly to the magnitude and duration of the threat (8, 9).

  1. Song, Y. et al (2005) J. Biol. Chem. 280(10):9618.
  2. Shima H et al. (2010) Int. Immunol. 22:149.
  3. Kubagawa H et al. (2009) J. Exp. Med. 206:2779.
  4. Proto-Siqueira R et al. (2008) Blood, 112:394.
  5. Pallasch, C et al. (2008) Blood, 112:4213.
  6. Pallasch, C P et al (2009) Leukemia & lymphoma, 50:498.
  7. Sigruener, A et al (2007) Biochemical and biophysical research communications, 359:723.
  8. Richards R I et al (2016) Front. Neurosci. 10:193.
  9. Planells-Ferrer L et al (2016) J Neurochem. 139:11.
Long Name
Fc mu Receptor
Entrez Gene IDs
9214 (Human); 69169 (Mouse); 548326 (Rat)
Alternate Names
FAIM3; Fas apoptotic inhibitory molecule 3; Fc mu R; Fc mu receptor; FCMR; immunoglobulin mu Fc receptor; Regulator of Fas-induced apoptosis Toso; Toso; TOSOIgM Fc receptor

Product Datasheets

Product Specific Notices

This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.


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