This antibody gave a positive signal in the following whole cell lysates:
HEK293 Human embryonic kidney cell line)
HepG2 (Human hepatocellular liver carcinoma cell line)
MCF7 (Human breast adenocarcinoma cell line)
IHC-P (FFPE): Hu Placenta (normal) tissue.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use a concentration of 1 µg/ml. Detects a band of approximately 165 kDa (predicted molecular weight: 170 kDa).
Use a concentration of 1 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
FunctionPromotes the exchange of Ras-bound GDP by GTP.
Tissue specificityExpressed in gingival tissues.
Involvement in diseaseDefects in SOS1 are the cause of gingival fibromatosis 1 (GGF1) [MIM:135300]; also known as GINGF1. Gingival fibromatosis is a rare overgrowth condition characterized by a benign, slowly progressive, nonhemorrhagic, fibrous enlargement of maxillary and mandibular keratinized gingiva. GGF1 is usually transmitted as an autosomal dominant trait, although sporadic cases are common. Defects in SOS1 are the cause of Noonan syndrome type 4 (NS4) [MIM:610733]. NS4 is an autosomal dominant disorder characterized by dysmorphic facial features, short stature, hypertelorism, cardiac anomalies, deafness, motor delay, and a bleeding diathesis. It is a genetically heterogeneous and relatively common syndrome, with an estimated incidence of 1 in 1000-2500 live births. Rarely, NS4 is associated with juvenile myelomonocytic leukemia (JMML). SOS1 mutations engender a high prevalence of pulmonary valve disease; atrial septal defects are less common.
IHC image of SOS1 staining in Human Placenta formalin fixed paraffin embedded tissue section, performed on a Leica Bond system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab35702, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.
Western blot - SOS1 antibody (ab35702)
All lanes : Anti-SOS1 antibody (ab35702) at 1 µg/ml
Lane 1 : HEK293 whole cell lysate (ab7902) Lane 2 : HepG2 whole cell lysate (ab7900) Lane 3 : MCF7 (Human breast adenocarcinoma cell line) Whole Cell Lysate