Human 2B4/CD244/SLAMF4 Alexa Fluor® 488-conjugated Antibody

Catalog #: FAB10393G Datasheet / COA / SDS
Catalog # Availability Size / Price Qty
FAB10393G-100UG

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Human 2B4/CD244/SLAMF4 Alexa Fluor® 488-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human 2B4/CD244/SLAMF4 in direct ELISAs.
Source
Monoclonal Mouse IgG2B Clone # 999602
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
NS0 mouse myeloma cell line transfected with human 2B4/CD244/SLAMF4
Gly19-His222
Accession # NP_057466
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 488 (Excitation= 488 nm, Emission= 515-545 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
HEK293 Human Cell Line Transfected with Human 2B4/CD244/SLAMF4 and eGFP and Human Peripheral 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
Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: 2B4/CD244/SLAMF4

2B4, also known as CD244 and SLAMF4, is a 66 kDa type I transmembrane glycoprotein in the SLAM subgroup of the CD2 protein family. SLAM family proteins have an extracellular domain (ECD) with two or four Ig-like domains and at least two cytoplasmic immunoreceptor tyrosine-based switch motifs (ITSMs). 2B4 interacts with CD48, while other SLAM family proteins interact homophilically (1‑4). Mature human 2B4 consists of a 208 amino acid (aa) ECD with two Ig-like domains, a 21 aa transmembrane segment, and a 120 aa cytoplasmic domain with four ITSMs (5, 6). Three additional splice variants of human 2B4 have deletions of the short region between the Ig-like domains, the second Ig-like domain, or a portion of the cytoplasmic tail. Within the ECD, human 2B4 shares 46% and 40% aa sequence identity with mouse and rat 2B4, respectively. The ECD of human 2B4 shares 17%‑24% aa sequence identity with comparable regions of human CD2 family members BLAME, CD2F-10, CD84, CD229, CRACC, NTB-A, and SLAM. 2B4 is expressed on all NK cells, gamma δ T cells, monocytes, some CD4+ and CD8+ T cells, and some dendritic cells (7). CD48 mediates 2B4+ cell interactions with nearly all hematopoietic cell types, including cells of the same type (8‑10). 2B4/CD48 signaling cooperates with other receptor systems to either promote or inhibit NK and CD8+ T cell activation (7‑13). The inhibitory activities are distinct from those of MHC I restricted inhibitory NK cell receptors (12, 13). Ligation of 2B4 with antibodies or CD48 constructs can either directly trigger inhibitory signaling or disrupt an inhibitory interaction, leading to cellular activation (9, 12). The inhibitory effect is associated with the long form of 2B4, while the activation is associated with the short form (9, 14). 2B4 can also induce signaling through CD48 (10, 15).

References
  1. Bhat, R. et al. (2006) J. Leukoc. Biol. 79:417.
  2. Veillette, A. (2006) Nat. Rev. Immunol. 6:56.
  3. McNerney, M.E. et al. (2005) Mol. Immunol. 42:489.
  4. Assarsson, E. et al. (2005) J. Immunol. 175:2045.
  5. Boles, K.S. et al. (1999) Tissue Antigens 54:27.
  6. Kubin, M.Z. et al. (1999) Eur. J. Immunol. 29:3466.
  7. Nakajima, H. et al. (1999) Eur. J. Immunol. 29:1676.
  8. Lee, K.M. et al. (2006) Blood 107:3181.
  9. Mooney, J.M. et al. (2004) J. Immunol. 173:3953.
  10. Assarsson, E. et al. (2004) J. Immunol. 173:174.
  11. Bryceson, Y.T. et al. (2006) Blood 107:159.
  12. Lee, K-M. et al. (2004) J. Exp. Med. 199:1245.
  13. McNerney, M.E. et al. (2005) Blood 106:1337.
  14. Schatzle, J.D. et al. (1999) Proc. Natl. Acad. Sci. USA 96:3870.
  15. Messmer, B. et al. (2006) J. Immunol. 176:4646.
Entrez Gene IDs
51744 (Human); 18106 (Mouse); 685808 (Rat); 102132700 (Cynomolgus Monkey)
Alternate Names
2B4; CD244 antigen; CD244 molecule, natural killer cell receptor 2B4; CD244; h2B4; NAIL; NAILNK cell activation-inducing ligand; natural killer cell receptor 2B4; NKR2B4; NKR2B4NK cell type I receptor protein 2B4,2B4CD244 natural killer cell receptor 2B4; Nmrk; SLAMF4; SLAMF4NK cell activation inducing ligand NAIL

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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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