Fc epsilon RI alpha Antibody (773704) [Alexa Fluor® 350]

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Flow
Clone
773704
Clonality
Monoclonal
Host
Mouse
Conjugate
Alexa Fluor 350
Concentration
Please see the vial label for concentration. If unlisted please contact technical services.

Fc epsilon RI alpha Antibody (773704) [Alexa Fluor® 350] Summary

Immunogen
Mouse myeloma cell line NS0-derived recombinant human Fc epsilon RI alpha
Val26-Gln205
Accession # P12319
Specificity
Detects human Fc epsilon RI alpha in direct ELISAs.
Isotype
IgG2b
Clonality
Monoclonal
Host
Mouse
Gene
FCER1A
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Flow Cytometry 0.25-1 ug/10^6 cells
Application Notes
Flow Cytometry: Please use 0.25-1 ug of conjugated antibody per 10e6 cells.

Packaging, Storage & Formulations

Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Buffer
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Preservative
0.09% Sodium Azide
Concentration
Please see the vial label for concentration. If unlisted please contact technical services.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Fc epsilon RI alpha Antibody (773704) [Alexa Fluor® 350]

  • Fc epsilon RI alpha
  • FCE1A
  • FCER1A
  • FcERI
  • FceRIa

Background

The alpha subunit of the high affinity IgE receptor (Fc epsilon  RI alpha or Fc epsilon RIA) is an IgE‑binding type I transmembrane glycoprotein of the multichain immune recognition (MIRR) family (1, 2). The receptor, Fc epsilon  RI, is a tetrameric complex of one alpha, one beta and two gamma subunits ( alpha beta gamma 2) on mast cells and basophils (1). An alternate trimeric form ( alpha gamma 2) is expressed on human, but not rodent, mast cells, basophils, eosinophils and professional antigen presenting cells (3). While the gamma subunit is essential for expression of Fc epsilon  RI alpha on the cell surface and for cell signaling, the beta subunit, when present, increases the halflife of the Fc epsilon  RI complex on the cell surface (3, 4). An isoform of the beta subunit, beta T, blocks processing of the alpha subunit and its cell surface expression (2, 3, 5). Human Fc epsilon  RI alpha cDNA encodes 257 amino acids (aa) including a 25 aa signal sequence, a 180 aa extracellular domain containing two Ig‑like domains that bind IgE and an endoplasmic reticulum retention motif, a 21 aa transmembrane domain with a charged amino acid (Asp219) that contributes to intracellular transport, and a 32 aa cytoplasmic sequence (1, 3, 6). Human Fc epsilon  RI alpha shares 50‑62% aa sequence identity with mouse, rat, equine, ovine, bovine, porcine and canine Fc epsilon  RI alpha. Binding of IgE alone increases surface expression of Fc epsilon  RI, while crosslinking of IgE/Fc epsilon  RI complexes by IgE ligands (allergens) initiates receptor internalization and signaling (2, 4, 5). Mast cell and basophil activation by IgE/Fc epsilon  RI crosslinking causes degranulation, releasing histamine, leukotrienes, prostaglandins, and other mediators of immediate‑type and late‑phase allergic reactions. Circulating autoantibodies that crosslink Fc epsilon  RI alpha are often found in patients with chronic urticaria (7). Fc epsilon  RI on human antigen presenting cells mediates uptake and processing of allergens for presentation by class II MHC (2, 3). Fc epsilon  RI expression on human DC and Langerhans cells is up‑regulated during allergic reactions (atopy) and correlates with serum IgE concentration (3).

  1. Shimizu, A. et al. (1988) Proc. Natl. Acad. Sci. USA 85:1907.
  2. Abramson, J. and I. Pecht (2007) Immunol. Rev. 217:231.
  3. Kraft, S. and J-P. Kinet (2007) Nat. Rev. Immunol. 7:365.
  4. Yamasaki, S. and T. Saito (2008) J. Pharmacol. Sci. 106:336.
  5. Brenzovich, J. et al. (2009) J. Leukoc. Biol. 86:1351.
  6. Cauvi, D.M. et al. (2006) J. Biol. Chem. 281:10448.
  7. Kikuchi, Y. et al. (2001) J. Allergy Clin. Immunol. 107:1056.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Bioinformatics

Gene Symbol FCER1A
Uniprot