SOS2 (Son of sevenless homolog 2) is a 160‑170 kDa protein that regulates Ras signaling. It is widely expressed, and serves as a mediator of guanine nucleotide phosphate exchange. In the resting cell, cytoplasmic SOS2 forms a heterodimer with Grb2, and a heterotrimer with Eps8 and E3b1. Upon RTK activation, the SOS heterodimer is recruited to the cell membrane, where it contacts GDP‑bound Ras. This allows it to facilitate a GTP‑for‑GDP exchange that activates Ras. The heterotrimer interacts with Rac on actin filaments. SOS2 activity parallels that of SOS1. Relative to SOS1, however, SOS2 binds Grb2 with higher affinity and shows less biological activity due to a shorter half‑life. Human SOS2 is 1332 amino acids (aa) in length and contains one histone fold (aa 97‑169), PH (aa 439‑546) and REM (aa 595‑739) domains that interact with Ras, and a Pro‑rich region that binds to Grb2 (aa 1126‑1242).
Key Product Details
Species Reactivity
Validated:
Cited:
Applications
Validated:
Cited:
Label
Antibody Source
Product Specifications
Immunogen
Met1-Ser384
Accession # Q07890
Specificity
Clonality
Host
Isotype
Scientific Data Images for Human SOS2 Antibody
Detection of Human SOS2 by Western Blot.
Western blot shows lysates of K562 human chronic myelogenous leukemia cell line and 293T human embryonic kidney cell line. PVDF Membrane was probed with 2 µg/mL of Goat Anti-Human SOS2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6260) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF109). A specific band was detected for SOS2 at approximately 160 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Applications for Human SOS2 Antibody
Western Blot
Sample: K562 human chronic myelogenous leukemia cell line and 293T human embryonic kidney cell line
Formulation, Preparation, and Storage
Purification
Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
Formulation
Shipping
Stability & Storage
- 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.
Calculators
Background: SOS2
Long Name
Alternate Names
Gene Symbol
UniProt
Additional SOS2 Products
Product Documents for Human SOS2 Antibody
Certificate of Analysis
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Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human SOS2 Antibody
For research use only
Related Research Areas
Citations for Human SOS2 Antibody
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Cellular Response to Hypoxia Protocols
- R&D Systems Quality Control Western Blot Protocol
- Troubleshooting Guide: Western Blot Figures
- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
- View all Protocols, Troubleshooting, Illustrated assays and Webinars
Associated Pathways
Common Cytokine Receptor Gamma-Chain Family Signaling Pathways
IL-2 Signaling Pathways
IL-4 Signaling Pathways
IL-7 Signaling Pathways
IL-15 Signaling Pathways
IL-21 Signaling Pathways
MAPK Signaling Pathway: Mitogen Stimulation Pathway
mTOR Signaling Pathway
TGF-beta Signaling Pathways
VEGF - VEGF R2 Signaling Pathways
