SpecificityThe specificity of this antibody has been confirmed by WB on C6 cell lysates. The screened epitope of this antibody recognizes the protein of 135KD only, and the antibody has been verified via gene knockout.
Species ReactivityHuman, Mouse, Rat
Immunogen DescriptionA synthetic peptide from human FGF receptor 2.
ConjugateUnconjugated
Purity DescriptionRabbit IgG was purified from cell culture via protein G affinity chromatography.
Application DetailsWestern Blotting (WB). A dilution of 1:500-1:2,000 is recommended for WB. R-1776-100 has an epitope located in the extracellular domain portion of FGFR2. In tests using C6 cells, this antibody detects a 135 kDa band under reducing conditions Immunoprecipitation (IP). A concentration of 1:50 is recommended for IP in a lysis buffer that contains no more than 0.5% detergent as well as proteinase inhibitors. Detection can be via R-1776-100 in westerns following, IP enrichment however rabbit heavy chain (50-55~ kDa) and light chains (~23-25 kDa) will also be detected by the anti-rabbit used to detect R-1776-100 on westerns unless biotinylation of R-1776-100 is used. As always, Biosensis recommends optimal dilutions/concentrations should be determined by the end user for their specific experimental design.
TargetFGF Receptor 2
SpecificityThe specificity of this antibody has been confirmed by WB on C6 cell lysates. The screened epitope of this antibody recognizes the protein of 135KD only, and the antibody has been verified via gene knockout.
Target Host SpeciesHuman
Species ReactivityHuman, Mouse, Rat
Antibody HostRabbit
Antibody TypeMonoclonal
Antibody IsotypeIgG
ConjugateUnconjugated
Immunogen DescriptionA synthetic peptide from human FGF receptor 2.
Purity DescriptionRabbit IgG was purified from cell culture via protein G affinity chromatography.
FormatLiquid in PBS pH 7.4, 150 mM NaCl, 0.02% sodium azide, 0.4-0.5 mg/mL BSA, 50% glycerol.
Storage InstructionsMaintain at -20°C unopened for up to 12 months after date of receipt. After opening maintain at -20°C in undiluted aliquots for up to six months.
Batch NumberPlease see item label.
Expiration Date12 months after date of receipt (unopened vial).
Scientific BackgroundFGF receptor 2 (FGFR2) is a member of the fibroblast growth factor receptor family and is Single-pass type I membrane protein and a high-affinity receptor for acidic, basic and/or keratinocyte growth factor, depending on the isoform. At least 20 isoforms are produced by alternative splicing. Because of its many isoforms, FGF2 receptor can demonstrate a wide range of sizes on reduced westerns generally ranging from ~135 kDa to 50 kDa in size. FGFR2 is highly expressed in developing human tissues and localizes to plasma, Golgi, and cytoplasmic vesicles. After ligand binding, the activated receptor is rapidly internalized and degraded.
Western blot analysis of FGFR2 expression in (1) MCF-7 cell lysate; (2) Mouse brain lysate with R-1776-100. 50 ug samples, 1:1000, 1.5 hours. FGFR2 proteins often have multiple splice variants and thus sizes on western blots. Most tissues have a prominent 95 and 135 kDa isoforms (~135 kDa band is shown here) but some cancer lines can also express other variants such as 85 and 109 kDa polypeptides, as well as, several smaller polypeptides in the 46-53 kDa range. Finally, protease attack can also lead to lower molecular weight bands being detected than expected particularly with single epitope antibodies like R-1776-100.