Detects mouse 2B4/CD244/SLAMF4 in direct ELISAs and Western blots. In direct ELISAs, approximately 5% cross-reactivity with recombinant human (rh) 2B4 is observed and less than 1% cross-reactivity with rhSLAM is observed.
Immunogen affinity purified
Test in a species/application not listed above to receive a full credit towards a future purchase.
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.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Immunogen affinity purified
Reconstitute at 0.2 mg/mL in sterile PBS.
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for 2B4/CD244/SLAMF4 Antibody
CD244 molecule, natural killer cell receptor 2B4
NAILNK cell activation-inducing ligand
natural killer cell receptor 2B4
NKR2B4NK cell type I receptor protein 2B4,2B4CD244 natural killer cell receptor 2B4
SLAMF4NK cell activation inducing ligand NAIL
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 in a homophilic manner (1‑4). The mouse 2B4 cDNA encodes a 397 amino acid (aa) precursor that includes a 19 aa signal sequence, a 207 aa ECD with one Ig-like V-type and one C2-type Ig-like domain, a 21 aa transmembrane segment, and a 150 aa cytoplasmic domain with four ITSMs (5, 6). A short splice variant of mouse 2B4 contains only one ITSM (6). Within the ECD, mouse 2B4 shares 46% and 68% aa sequence identity with human and rat 2B4, respectively. The ECD of mouse 2B4 shares 17‑26% aa sequence identity with comparable regions of mouse 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 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 directly trigger inhibitory signaling or disrupt an inhibitory interaction, leading to cellular activation (9, 12). 2B4 can also induce signaling through CD48 (10, 14). The inhibitory effect is associated with the long form of 2B4, while activation is associated with the short form (9, 15).
Bhat, R. et al. (2006) J. Leukocyte Biol. 79:417.
Veillette, A. (2006) Nat. Rev. Immunol. 6:56.
McNerney, M.E. et al. (2005) Mol. Immunol. 42:489.
Assarsson, E. et al. (2005) J. Immunol. 175:2045.
Mathew, P.A. et al. (1993) J. Immunol. 151:5328.
Stepp, S.E. et al. (1999) Eur. J. Immunol. 29:2392.
Nakajima, H. et al. (1999) Eur. J. Immunol. 29:1676.
Lee, K.M. et al. (2006) Blood 107:3181.
Mooney, J.M. et al. (2004) J. Immunol. 173:3953.
Assarsson, E. et al. (2004) J. Immunol. 173:174.
Bryceson, Y.T. et al. (2006) Blood 107:159.
Lee, K-M. et al. (2004) J. Exp. Med. 199:1245.
McNerney, M.E. et al. (2005) Blood 106:1337.
Messmer, B. et al. (2006) J. Immunol. 176:4646.
Schatzle, J.D. et al. (1999) Proc. Natl. Acad. Sci. 96:3870.
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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Bio-Techne appreciates the critical role that you and our products and services play in research efforts to further scientific innovation and discovery. We are continually assessing our manufacturing and supplier capabilities during the COVID-19 situation and are implementing precautionary measures to ensure uninterrupted supply of products and services. Currently, and as we abide by local shelter in place orders across the world, we are fully operational and do not anticipate any material supply disruptions across our Bio-Techne brands and product lines. As the situation evolves, our goal is to utilize preventive measures to reduce the threat that COVID-19 poses to our ability to meet the needs of our customers globally.