| Field | Specification |
|---|---|
| Target | |
| Alternative names | Splicing factor U2AF 65 kDa subunit; U2 auxiliary factor 65 kDa subunit; hU2AF (65); Hu2af65; U2 snRNP auxiliary factor large subunit; U2AF2; U2AF65 |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human U2AF65/U2AF2 recombinant protein (Position: M238-H470). |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody targets splicing factor U2AF 65 kDa subunit (gene U2AF2) in human, mouse and rat samples and is validated for Western blot, IHC, ICC/IF, flow cytometry, ELISA and immunoprecipitation. The predicted molecular weight is 53.5 kDa, and the supplier reports an observed band at about 65 kDa.
U2AF2 (U2AF65) is the large subunit of U2 auxiliary factor, which binds the polypyrimidine tract near the 3′ splice site of introns. With U2AF1 and SF1 it helps recognize the 3′ splice site and recruit the U2 snRNP during early spliceosome assembly, and it also influences alternative splicing and mRNA export.
| Target | Splicing factor U2AF 65 kDa subunit (gene U2AF2; UniProt P26368, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human, Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4; 0.05 mg NaN3 |
| Calculated MW | 53.5 kDa |
| Observed MW | 65 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 0.25–0.5 µg/mL (Human, Mouse, Rat) |
|---|---|
| IHC (paraffin sections) | 0.5–1 µg/mL (Human, Mouse, Rat) |
| Immunocytochemistry / Immunofluorescence | 2 µg/mL (Human) |
| Immunoprecipitation | 0.5–2 µg/mL (Human) |
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Human, Mouse, Rat) |
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): human 293T cells, human RT4 cells, human A549 cells, human U251 cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 10% SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): human mammary cancer tissue, mouse spleen tissue, rat spleen tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in EDTA buffer (pH 8.0).
Samples with confirmed staining (ICC/IF): HeLa cells.
Samples with a confirmed result (IP): A549 cells.
Samples with a confirmed signal (flow cytometry): PC-3 cells, ANA-1 cells, NRK cells.
Immunogen
Recombinant human U2AF65/U2AF2 fragment (Met238–His470), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. UniProt places splicing factor U2AF 65 kDa subunit in the nucleus. The samples tested by the supplier (listed above) are a practical starting point for positive controls.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
