| Field | Specification |
|---|---|
| Target | |
| Alternative names | Catenin alpha-1;Alpha E-catenin;Cadherin-associated protein;Renal carcinoma antigen NY-REN-13;CTNNA1; |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human CTNNA1 recombinant protein (Position: D143-D292). Human CTNNA1 shares 98% amino acid (aa) sequence identity with mouse CTNNA1. |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody detects catenin alpha-1 (gene CTNNA1) in human, mouse and rat samples and is validated for flow cytometry, ICC/IF, IHC and Western blot. The predicted molecular weight is 100.1 kDa, and the supplier reports an observed band at about 100 kDa.
Alpha-E-catenin (CTNNA1) links cadherin-β-catenin complexes at adherens junctions to the actin cytoskeleton, supporting cell-cell adhesion in epithelia. It also senses mechanical tension at junctions and influences YAP/TAZ signaling and actin assembly. It is studied in epithelial polarity, tissue mechanics and cancer invasion.
| Target | Catenin alpha-1 (gene CTNNA1; UniProt P35221, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human, Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 0.9 mg NaCl; 0.2 mg Na2HPO4; 0.05 mg NaN3; plus stabilizers |
| Calculated MW | 100.1 kDa |
| Observed MW | 100 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 | 0.1–0.5 µg/mL (Human, Rat) |
|---|---|
| IHC (paraffin sections) | 0.5–1 µg/mL (Human, Mouse, Rat) |
| IHC (frozen sections) | 0.5–1 µg/mL (Rat) |
| Immunocytochemistry / Immunofluorescence | 2 µg/mL (Human) |
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Human) |
Samples with a confirmed band (WB): rat liver tissue, rat lung tissue, rat cardiac muscle tissue, NIH3T3 cells, PC-12 cells, HepG2 cells, HeLa cells, MCF-7 cells, HEPA cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 50 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 1:10000, ECL detection.
Samples with confirmed staining (IHC): rat intestine tissue, human mammary tissue, mouse intestine 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 citrate buffer (pH 6).
Samples with confirmed staining (ICC/IF): U2OS cells.
Samples with a confirmed signal (flow cytometry): U-87 cells.
Immunogen
Recombinant human CTNNA1 fragment (Asp143–Asp292), expressed in E. coli. Sequence identity with the mouse ortholog: 98%.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. UniProt places catenin alpha-1 in the cytoplasm, cell junction and cell membrane. Tissue expression noted by UniProt (human): Ubiquitously expressed in normal tissues... 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.
