Recombinant Mouse CD84/SLAMF5 Protein, CF

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Recombinant Mouse CD84/SLAMF5 Protein, CF Summary

Product Specifications

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<0.01 EU per 1 μg of the protein by the LAL method.
Meassure by its ability to enhance anti-CD3-induced IFN-gamma secretion of mouse CD3+ T cells. The ED50 for this effect is 0.4-2 μg/mL.
Mouse myeloma cell line, NS0-derived mouse CD84/SLAMF5 protein
Ala20-Pro223, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Predicted Molecular Mass
23.7 kDa
35-41 kDa, reducing conditions

Product Datasheets

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Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.


Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
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Background: CD84/SLAMF5

CD84, also known as Ly‑9B and SLAMF5, is a type I transmembrane protein in the SLAM subgroup of the CD2 family. SLAM family proteins regulate multiple aspects of immune system function (1). Mature mouse CD84 consists of a 200 amino acid (aa) extracellular domain (ECD) with two Ig‑like domains, a 21 aa transmembrane segment, and a 87 aa cytoplasmic domain with two immunoreceptor tyrosine‑based switch motifs (ITSMs) (2). Alternate splicing generates an additional isoform that is truncated following the first Ig‑like domain. CD84 exhibits homophilic binding which is mediated by the N‑terminal Ig‑like domain (3). Ligation induces tyrosine phosphorylation in the cytoplasmic ITSMs which then recruit the signaling adaptor molecules SAP (SLAM‑associated protein) and EAT‑2 (EWS/Fli1‑activated transcript 2) (4, 5). CD84 is expressed as a 60‑90 kDa molecule with extensive and cell type‑specific glycosylation (6‑8). It is widely expressed among hematopoietic cells including hematopoietic stem cells (8), myeloid cells (e.g. macrophages, monocytes, dendritic cells, granulocytes, and mast cells) (4, 7‑10), platelets and megakaryocytes (3, 7, 8, 11), and lymphocytes. Within the T cell lineage, CD84 is expressed on thymocytes, CD4-CD8- cells, single positive CD4 or CD8 cells, NKT cells, and on mouse but not human NK cells (3, 4, 8, 9, 12). Within the B cell lineage, it is expressed on pro‑ and pre‑, mature, marginal zone, and memory B cells as well as plasma cells (4, 8, 13). CD84 signaling inhibits Fc epsilon RI-induced mast cell activation (10) but enhances platelet activation (11), LPS‑induced macrophage activation (8), T cell proliferation and IFN‑ gamma production (3, 5), and the interactions between T cells and B cells that are required for germinal center formation (14).

  1. Cannons, J.L. et al. (2011) Annu. Rev. Immunol.  29:665.
  2. de la Fuente, M.A. et al. (1999) Immunogenetics 49:249.
  3. Martin, M. et al. (2000) J. Immunol. 167:3668.
  4. Tangye, S.G. et al. (2002) Eur. J. Immunol. 32:1640.
  5. Tangye, S.G. et al. (2003) J. Immunol. 171:2485.
  6. de la Fuente, M.A. et al. (1997) Blood. 90:2398.
  7. Krause, S.W. et al. (2000) Biochem. J. 346:729.
  8. Sintes, J. et al. (2010) J. Leukoc. Biol. 88:687.
  9. Romero, X. et al. (2004) Tissue Antigens 64:132.
  10. Alvarez-Errico, D. et al. (2011) J. Immunol. 187:5577.
  11. Nanda, N. et al. (2005) Blood 106:3028.
  12. Wang, N. et al. (2010) J. Immunol. 185:5683.
  13. De Salort, J. et al. (2011) Immunol. Lett. 134:129.
  14. Cannons, J.L. et al. (2010) Immunity 32:253.
Long Name
SLAM Family Member 5
Entrez Gene IDs
8832 (Human); 12523 (Mouse)
Alternate Names
CD84 antigen (leukocyte antigen); CD84 antigen; CD84 molecule; CD84; Cell surface antigen MAX.3; DKFZp781E2378; hCD84; hly9-beta; leucocyte differentiation antigen CD84; leukocyte antigen CD84; Leukocyte differentiation antigen CD84; Ly-9B; mCD84; Signaling lymphocytic activation molecule 5; SLAM family member 5; SLAMF5; SLAMF5LY9B

Citation for Recombinant Mouse CD84/SLAMF5 Protein, CF

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. B cell-intrinsic CD84 and Ly108 maintain germinal center B cell tolerance.
    Authors: Wong E, Soni C, Chan A, Domeier P, w, Abraham T, Limaye N, Khan T, Elias M, Chodisetti S, Wakeland E, Rahman Z
    J Immunol, 2015;194(9):4130-43.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Bioassay


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