Human SOS2 Antibody

Catalog # Availability Size / Price Qty
Detection of Human SOS2 by Western Blot.
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Product Details
Citations (1)
Supplemental Products

Human SOS2 Antibody Summary

Species Reactivity
Detects human SOS2 in Western blots.
Polyclonal Goat IgG
Antigen Affinity-purified
E. coli-derived recombinant human SOS2
Accession # Q07890
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.


Recommended Concentration
Western Blot
2 µg/mL
See below

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.

Scientific Data

Western Blot Detection of Human SOS2 antibody by Western Blot. View Larger

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.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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: SOS2

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).

Long Name
Son of Sevenless Homolog 2
Entrez Gene IDs
6655 (Human); 20663 (Mouse)
Alternate Names
FLJ25596; guanine nucleotide exchange factor; guanine nucleotide releasing factor; son of sevenless (Drosophilia) homolog 2; son of sevenless homolog 2 (Drosophila); son of sevenless homolog 2; SOS2; SOS-2

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Citation for Human SOS2 Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. BRAF activation by metabolic stress promotes glycolysis sensitizing NRASQ61-mutated melanomas to targeted therapy
    Authors: K McGrail, P Granado-Ma, R Esteve-Pui, S García-Ort, Y Ding, S Sánchez-Re, B Ferrer, J Hernandez-, F Canals, A Manzano, A Navarro-Sa, R Bartrons, O Yanes, M Pérez-Alea, E Muñoz-Cous, V Garcia-Pat, JA Recio
    Nature Communications, 2022;13(1):7113.
    Species: Human
    Sample Types: Whole Cells
    Applications: ICC


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Reconstitution Buffers

Secondary Antibodies

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