Anti-SAP-1 Antibody, clone 123

Receptor type protein tyrosine phosphatase sap-1 (UniProt: B6ZDS3; also known as Stomach-cancer associated protein tyrosine phosphatase 1, SAP-1) is encoded by Ptprh (also known as Sap1) gene (Gene ID: 545902) in murine species. SAP-1 is a receptor-type (R3) protein tyrosine phosphatase that is expressed predominantly in the gastrointestinal tract, most prominently in the microvilli of the brush border in gastrointestinal epithelial cells. SAP-1 has a single catalytic domain in its cytoplasmic region and eight fibronectin type III-like domains in its extracellular region. It is synthesized with a 27 amino acid signal peptide, which is subsequently cleaved. SAP-1 is reported to play a significant role in the regulation of intestinal tumorigenesis and its expression is markedly increased in colon and pancreatic cancers. Ablation of SAP-1 in IL-10-deficient mice display greater severity of colitis in association with up-regulation of mRNAs for various cytokines and chemokines in the colon. The cytoplasmic region of SAP-1 is shown to bind directly to Lck. Over-expression of SAP-1 results in down-regulation of Lck activity that leads to inhibition of T cell receptor-mediated T cell function. (Ref.: Murata, Y et al. (2015). Proc. Natl. Acad. Sci. USA. 112(31):E4264-71).

The previously assigned protein identifier B6ZDS3 has been merged into E9Q0N2. Full details can be found on the UniProt database.

Clone 123 recognizes SAP-1 in HEK293A cells transfected with murine SAP-1. It targets an epitope in the extracellular domain.

Epitope: extracellular domain

Recombinant fusion protein comprising the extracellular region of mouse SAP-1 (amino acids 1-604) and the Fc region of human IgG.

Detect SAP1 using this rat monoclonal Anti-SAP-1 Antibody, clone 123, Cat. No. MABC1592. It has been tested in Immunofluorescence, Immunohistochemistry, Immunoprecipitation, and Western blotting.

Research Category
Apoptosis & Cancer

Western Blotting Analysis: A representative lot detected SAP-1 in HEK293A cells transfected with murine SAP-1 versus mock control. (Courtesy of Yoji Murata, Ph.D. and Takashi Matozaki, M.D., Ph.D. Kobe University Graduate School of Medicine, Japan).

Immunofluorescence Analysis: A representative lot detected SAP-1 in Immunofluorescence applications (Sadakata, H., et. al. (2009). Genes Cells. 14(3):295-308; Murata, Y., et. al. (2015). Proc Natl Acad Sci USA. 112(31):E4264-71).

Immunofluorescence Analysis: A representative lot detected SAP-1 in ileum from 8-week old WT mouse (Courtesy of Yoji Murata, Ph.D. and Takashi Matozaki, M.D., Ph.D. Kobe University Graduate School of Medicine, Japan).

Immunoprecipitation Analysis: A representative lot detected SAP-1 in Immunoprecipitation applications (Murata, Y., et. al. (2015). Proc Natl Acad Sci USA. 112(31):E4264-71).

Immunohistochemistry Analysis: A representative lot detected SAP-1 in Immunohistochemistry applications (Sadakata, H., et. al. (2009). Genes Cells. 14(3):295-308; Murata, Y., et. al. (2015). Proc Natl Acad Sci USA. 112(31):E4264-71).

Western Blotting Analysis: A representative lot detected SAP-1 in Western Blotting applications (Sadakata, H., et. al. (2009). Genes Cells. 14(3):295-308; Murata, Y., et. al. (2015). Proc Natl Acad Sci USA. 112(31):E4264-71).

Evaluated by Western Blotting in HEK293A cells transfected with murine SAP-1.

Western Blotting Analysis: 1 µg/mL of this antibody detected SAP-1 in 10 µg of lysate from HEK293A cells transfected with murine SAP-1.

~180 kDa observed; 106.98 kDa calculated. Uncharacterized bands may be observed in some lysate(s).

Protein G purified

Format: Purified

Purified rat monoclonal antibody IgG1 in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

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

Concentration: Please refer to lot specific datasheet.

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