Application

Research Sub CategoryImmunological Signaling

Anti-SAP Antibody, clone 1A9 is an antibody against SH2D1A for use in Flow Cytometry, Western Blotting.

Research CategoryInflammation & Immunology

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

General description

SH2 domain-containing protein 1A (UniProt O60880; also known as Signaling lymphocytic activation molecule-associated protein, SLAM-associated protein, T-cell signal transduction molecule SAP) is encoded by the Sh2d1a (also known as Xlp) gene (Gene ID 20400) in murine species. SAP/SH2D1A is a 628-amino acid (isoform A) adaptor protein expressed in T cells, natural killer (NK) cells, NK-T cells, and some B cells. SAP/SH2D1A is made up almost exclusively of a Src homology 2 (SH2) domain (a.a. 6-104) and plays an important role in multiple immune cell functions, including T helper 2 (TH2) cytokine production, T cell-dependent antibody production, follicular T helper (TFH) cell differentiation, NK-T cell development, CD8+ T cell- and NK cell-mediated cytotoxicity. SAP couples signaling lymphocytic activation molecule (SLAM) family receptors to tyrosine phosphorylation signals through its interaction with the SH3 domain of Src family protein tyrosine kinase Fyn. In addition, SAP can prevent SH2 domain-containing negative regulators, such as phosphatases SHIP-1 and SHP-1, from inactivating SLAM-related receptors by blocking their interaction with the receptors. Evidence also shows that SAP/SH2D1A regulates T cell-dependent antibody production and TFH cell differentiation independent of Fyn. SAP/SH2D1A gene is mutated and inactivated in X-linked lymphoproliferative disease, a rare human immunodeficiency characterized by an uncontrolled immune response to Epstein-Barr virus infection.

Immunogen

GST-tagged recombinant full-length mouse SAP.

Other Notes

Concentration: Please refer to lot specific datasheet.

Physical form

Purified rat monoclonal IgG2aκ antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Protein G Purified

Format: Purified

Quality

Evaluated by Flow Cytometry in mouse splenocytes.

Flow Cytometry Analysis: 0.1 µg of this antibody detected SAP/SH2D1A in mouse splenocytes.

Specificity

Clone 1A9 reacts with SAP, but not EAT-2 or ERT (Roncagalli, R., et al. (2005). Nat. Immunol. 6(10):1002-1010). Clone 1A9 immunostained wild-type, but not sh2d1a-knockout murine peripheral blood CD3+CD4+ lymphocytes (Zhong, M.C., and Veillette, A. (2013). Mol. Cell. Biol. 33(6):1223-1232).

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.

Target description

13.90/13.59 kDa (murine isoform 1/2) and 14.19 kDa (human isoform A) calculated.