Mouse NTB-A/SLAMF6 Antibody

Catalog # Availability Size / Price Qty
MAB3986
MAB3986-SP
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Mouse NTB-A/SLAMF6 Antibody Summary

Species Reactivity
Mouse
Specificity
Detects mouse NTB‑A/SLAMF6 in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant human NTB-A or recombinant mouse CD84 is observed.
Source
Monoclonal Rat IgG2A Clone # 448318
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Mouse myeloma cell line NS0-derived recombinant mouse NTB‑A/SLAMF6
Glu31-Asn239
Accession # Q9ET39
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Applications

Recommended Concentration
Sample
Western Blot
1 µg/mL
Recombinant Mouse NTB-A/SLAMF6 Fc Chimera (Catalog # 3986-NT)

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

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS.
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Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: NTB-A/SLAMF6

NTB-A, also known as Ly108 and SLAMF6, is a 60 kDa type I transmembrane glycoprotein that belongs to the SLAM subgroup of the CD2 family (1). Mature mouse NTB-A consists of a 209 amino acid (aa) ECD with one Ig-like V-type and one Ig-like C2-type domain, a 23 aa transmembrane segment, and an 89 aa cytoplasmic domain with two immunoreceptor tyrosine-based switch motifs ITSMs (2). Within the ECD, mouse NTB-A shares 48% and 70% aa sequence identity with human and rat NTB-A, respectively. The ECD of mouse NTB-A shares 20%‑34% aa sequence identity with comparable regions of mouse 2B4, BLAME, CD2F-10, CD84, CD229, CRACC, and SLAM. An alternatively spliced isoform diverges after the second ITSM (2). NTB-A is expressed on the surface of NK, T, and B lymphocytes as well as eosinophils (3‑5). It interacts homophilically through weak associations between the Ig-V type domains (5‑7). NTB-A functions as an activating coreceptor on NK and T cells (3, 5, 6, 8). Tyrosine phosphorylation in the membrane proximal ITSM enables specific association with EAT-2, an interaction that is required for NTB-A mediated cytotoxicity of NK cells (9). Phosphorylation-dependent NTB-A association with SAP is required for full production of NK cell IFN-gamma (5, 9). This interaction is independent of EAT-2 binding and appears to involve the membrane distal ITSM (5, 9). NTB-A deficient mice show weakened Th2 responses and elevated levels of neutrophil-derived inflammatory mediators (10). On B cells, NTB-A modulates immunoglobulin class switching and the balance between tolerance and autoimmunity (5, 11). The isoform with the divergent C-terminal tail is overexpressed in B cells from lupus-prone mice (11).

References
  1. Veillette, A. (2006) Immunol. Rev. 214:22.
  2. Peck, S.R. and H.E. Ruley (2000) Immunogenetics 52:63.
  3. Bottino, C. et al. (2001) J. Exp. Med. 194:235.
  4. Munitz, A. et al. (2005) J. Immunol. 174:110.
  5. Valdez, P.A. et al. (2004) J. Biol. Chem. 279:18662.
  6. Flaig, R.M. et al. (2004) J. Immunol. 172:6524.
  7. Cao, E. et al. (2006) Immunity 25:559.
  8. Stark, S. and C. Watzl (2006) Int. Immunol. 18:241.
  9. Eissmann, P. and C. Watzl (2006) J. Immunol. 177:3170.
  10. Howie, D. et al. (2005) J. Immunol. 174:5931.
  11. Kumar, K.R. et al. (2006) Science 312:1665.
Long Name
NK-T-B Antigen/SLAM Family Member 6
Entrez Gene IDs
114836 (Human)
Alternate Names
Activating NK receptor; CD352 antigen; CD352; KALIFLJ50657; Ly108; NK-T-B-antigen; NTBA receptor; NTBA; NTB-A; NTB-AMGC104953; NTBAT- and B-cell antigen; SF2000; SLAM family member 6; SLAMF6

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