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Purified Mouse Anti-Sos1
Product Details
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BD Transduction Laboratories™
Human (QC Testing), Mouse, Dog, Rat (Tested in Development)
Mouse IgG1
Mouse mSos1 aa. 1-109
Western blot (Routinely Tested), Immunofluorescence, Immunoprecipitation (Tested During Development), Immunohistochemistry (Not Recommended)
170 kDa
250 µg/ml
Aqueous buffered solution containing BSA, glycerol, and ≤0.09% sodium azide.

Preparation And Storage

The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. Store undiluted at -20°C.

Product Notices

  1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
  2. Please refer to for technical protocols.
  3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  4. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
610095 Rev. 1
Antibody Details
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The Sos (son of sevenless) gene was originally identified in Drosophila, and two mammalian homologues (mSos1 and mSos2) were isolated from a mouse cDNA library. These two cDNAs predict proteins that are approximately 70% identical in their amino acid residues. Both mSos1 and mSos2 are expressed in a wide number of mouse embryonic and adult tissues as well as in several cell lines. The human homologues, hSos1 and hSos2 have also been isolated and show a very high degree of amino acid identity to the mouse genes (98% for Sos1). Sos1 has a predicted molecular weight of 150kDa, but the apparent molecular weight is closer to 170 kDa, presumably due to a high proline content. The mammalian Sos1 protein has a highly specific guanine nucleotide exchange activity toward p21ras . In EGF-stimulated cells, Sos1 interacts with the SH3 domains of GRB2, and GRB2 binds via its SH2 domain to tyrosine 1068 of the activated EGF receptor. Thus, GRB2 recruits Sos1 to the plasma membrane and enables it to activate the Ras signaling pathway by enhancing GTP loading on p21ras .

610095 Rev. 1
Format Details
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Tissue culture supernatant is purified by either protein A/G or affinity purification methods. Both methods yield antibody in solution that is free of most other soluble proteins, lipids, etc. This format provides pure antibody that is suitable for a number of downstream applications including: secondary labeling for flow cytometry or microscopy, ELISA, Western blot, etc.
610095 Rev.1
Citations & References
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Development References (5)

  1. Buday L, Downward J. Epidermal growth factor regulates p21ras through the formation of a complex of receptor, Grb2 adapter protein, and Sos nucleotide exchange factor. Cell. 1993; 73(3):611-620. (Biology). View Reference
  2. Egan SE, Giddings BW, Brooks MW, Buday L, Sizeland AM, Weinberg RA. Association of Sos Ras exchange protein with Grb2 is implicated in tyrosine kinase signal transduction and transformation. Nature. 1993; 363(6424):45-51. (Biology). View Reference
  3. Furuta S, Miura K, Copeland T, Shang WH, Oshima A, Kamata T. Light Chain 3 associates with a Sos1 guanine nucleotide exchange factor: its significance in the Sos1-mediated Rac1 signaling leading to membrane ruffling. Oncogene. 2002; 21(46):7060-7066. (Clone-specific: Immunofluorescence). View Reference
  4. Kardinal C, Konkol B, Lin H, et al. Chronic myelogenous leukemia blast cell proliferation is inhibited by peptides that disrupt Grb2-SoS complexes. Blood. 2001; 98(6):1773-1781. (Clone-specific: Western blot). View Reference
  5. Salojin KV, Zhang J, Meagher C, Delovitch TL. ZAP-70 is essential for the T cell antigen receptor-induced plasma membrane targeting of SOS and Vav in T cells. J Biol Chem. 2000; 275(8):5966-5975. (Clone-specific: Immunoprecipitation, Western blot). View Reference
View All (5) View Less
610095 Rev. 1

Please refer to Support Documents for Quality Certificates

Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described

Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims.  Comparisons are not made against non-BD technologies, unless otherwise noted.

For Research Use Only. Not for use in diagnostic or therapeutic procedures.