Human CD229/SLAMF3 Alexa Fluor® 750-conjugated Antibody

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FAB1898S-100UG
R&D Systems Antibodies
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Human CD229/SLAMF3 Alexa Fluor® 750-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human CD229/SLAMF3 in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross‑reactivity with recombinant mouse CD229 is observed.
Source
Monoclonal Mouse IgG2a Clone # 249936
Immunogen
Mouse myeloma cell line NS0-derived recombinant human CD229/SLAMF3
Lys48-Lys454
Accession # Q9HBG7
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 750 (Excitation= 749 nm, Emission= 775 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
Human whole blood lymphocytes

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

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: CD229/SLAMF3

CD229, also known as Ly9 and SLAMF3, is a 120 kDa type I transmembrane glycoprotein in the SLAM subgroup of the CD2 family (1). Mature human CD229 consists of a 407 amino acid (aa) extracellular domain (ECD) with two Ig‑like V-set and two Ig‑like truncated C2-set domains. It also shows a 22 aa transmembrane segment, and a 179 aa cytoplasmic domain with two immunoreceptor tyrosine-based switch motifs ITSMs (2, 3). The ECD of human CD229 shares 57%‑59% aa sequence identity with mouse and rat CD229. Within the first two Ig‑like domains that are common to all SLAM proteins, human CD229 shares 24%‑39% aa sequence identity with human 2B4, BLAME, CD2F-10, CD84, CRACC, NTB-A, and SLAM. Alternate splicing generates two additional isoforms that lack the juxtamembrane Ig‑like domain or short cytoplasmic region (2). CD229 is expressed on T and B cells, thymocytes, and more weakly on NK cells (2‑6). Homophilic binding between CD229 molecules is mediated by the N-terminal Ig‑like domain (7). Human and mouse CD229 exhibit cross-species binding (7). Antigen stimulation of lymphocytes induces CD229 clustering to sites of T cell‑B cell contact (7). Two tyrosines in the cytoplasmic domain are required for association of CD229 with the adaptor proteins AP-2 (μ2 chain) and GRB-2 and both are required for CD229 internalization (8, 9). In addition, there are two ITSMs which mediate phosphorylation-dependent CD229 association with SAP and SHP-2 (10). These four tyrosine-containing motifs are intact in the described CD229 splice variants. CD229 knockout mice show minimally impaired immune responses, suggesting functional redundancy with other molecules (11).

References
  1. Bhat, R. et al. (2006) J. Leukoc. Biol. 79:417.
  2. de la Fuente, M.A. et al. (2001) Blood 97:3513. 
  3. Sandrin, M.S. et al. (1992) J. Immunol. 149:1636.
  4. Romero, X. et al. (2004) Tissue Antigens 64:132. 
  5. Hogarth, P.M. et al. (1980) Immunogenetics 11:65. 
  6. Mathieson, B.J. et al. (1980) J. Immunol. 125:2127.
  7. Romero, X. et al. (2005) J. Immunol. 174:7033.
  8. Del Valle, J.M. et al. (2003) J. Biol. Chem. 278:17430.
  9. Martin, M. et al. (2005) J. Immunol. 174:5977.
  10. Sayos, J. et al. (2001) Blood 97:3867.
  11. Graham, D.B. et al. (2006) J. Immunol. 176:291.
Long Name
SLAM Family Member 3
Entrez Gene IDs
4063 (Human); 17085 (Mouse)
Alternate Names
CD229 antigen; CD229; cell-surface molecule Ly-9; hly9; Ly9; lymphocyte antigen 9Cell surface molecule Ly-9; mLY9; SLAMF3; T-lymphocyte surface antigen Ly-9

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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