2B4/CD244/SLAMF4 Antibody [DyLight 488]
Novus Biologicals, part of Bio-Techne | Catalog # NBP1-76558G
Conjugate
Catalog #
Forumulation
Catalog #
Key Product Details
Species Reactivity
Human, Mouse, Rat
Applications
ELISA, Immunocytochemistry/ Immunofluorescence, Western Blot
Label
DyLight 488 (Excitation = 493 nm, Emission = 518 nm)
Antibody Source
Polyclonal Rabbit IgG
Concentration
Please see the vial label for concentration. If unlisted please contact technical services.
Product Specifications
Immunogen
Antibody was raised against a 16 amino acid synthetic peptide near the carboxy terminus of human SLAMF4. The immunogen is located within the last 50 amino acids of SLAMF4. Amino Acid Squence: PKAQNPARLSRKELEN
Specificity
At least three isoforms of SLAMF4 are known to exist. SLAMF4 antibody is predicted to not cross-react with other SLAM protein family members.
Clonality
Polyclonal
Host
Rabbit
Isotype
IgG
Applications for 2B4/CD244/SLAMF4 Antibody [DyLight 488]
Application
Recommended Usage
ELISA
Optimal dilutions of this antibody should be experimentally determined.
Immunocytochemistry/ Immunofluorescence
Optimal dilutions of this antibody should be experimentally determined.
Western Blot
Optimal dilutions of this antibody should be experimentally determined.
Application Notes
Optimal dilution of this antibody should be experimentally determined.
Formulation, Preparation, and Storage
Purification
Peptide affinity purified
Formulation
50mM Sodium Borate
Preservative
0.05% Sodium Azide
Concentration
Please see the vial label for concentration. If unlisted please contact technical services.
Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store at 4C in the dark.
Background: 2B4/CD244/SLAMF4
The 2B4 receptor has both activating and inhibitory signaling properties (1,4). 2B4's ligand is CD48, which is expressed on hematopoietic cells (4, 5). When bound to CD48, subsequent phosphorylation of the ITSMs occurs, followed by recruitment of SH-2-containing adaptor protein (SAP) and Fyn, leading to phosphorylation of PLCgamma and Vav1, and resulting in NK cell activation (4). In the absence of SAP, Src homology region 2-containing protein tyrosine phosphatases (SHP) get recruited and inhibits NK cell activation (4). In the context of infection such as Epstein-Barr virus (EBV), when lacking SAP, 2B4 has been shown to have an inhibitory function via impaired T cell cytotoxicity against EBV-infected cells (6). While 2B4 has a role in eliciting CD8+ T cell response, overexpression of 2B4 can lead to T cell exhaustion in states of chronic infection (6). Studies have suggested that the antibody blockade of the 2B4-CD48 interaction might enhance T cell and NK cell function, however given both the activating and inhibitory properties of the 2B4 receptor, more research needs to be done to prevent unwanted effects (6).
References
1. Buller CW, Mathew PA, Mathew SO. Roles of NK Cell Receptors 2B4 (CD244), CS1 (CD319), and LLT1 (CLEC2D) in Cancer. Cancers (Basel). 2020 Jul 1;12(7):1755. https://doi.org/10.3390/cancers12071755
2. Catakovic K, Klieser E, Neureiter D, Geisberger R. T cell exhaustion: from pathophysiological basics to tumor immunotherapy. Cell Commun Signal. 2017;15(1):1. https://doi.org/10.1186/s12964-016-0160-z
3. Uniprot (Q9BZW8)
4. Chen Y, Lu D, Churov A, Fu R. Research Progress on NK Cell Receptors and Their Signaling Pathways. Mediators Inflamm. 2020 Jul 24;2020:6437057. https://doi.org/10.1155/2020/6437057.
5. Pahima H, Puzzovio PG, Levi-Schaffer F. 2B4 and CD48: A powerful couple of the immune system. Clin Immunol. 2019 Jul;204:64-68. https://doi.org/10.1016/j.clim.2018.10.014.
6. Waggoner SN, Kumar V. Evolving role of 2B4/CD244 in T and NK cell responses during virus infection. Front Immunol. 2012;3:377. https://doi.org/10.3389/fimmu.2012.00377
Alternate Names
CD244, NAIL, NKR2B4, Nmrk, SLAMF4
Gene Symbol
CD244
Additional 2B4/CD244/SLAMF4 Products
Product Documents for 2B4/CD244/SLAMF4 Antibody [DyLight 488]
Product Specific Notices for 2B4/CD244/SLAMF4 Antibody [DyLight 488]
DyLight (R) is a trademark of Thermo Fisher Scientific Inc. and its subsidiaries.
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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