| Field | Specification |
|---|---|
| Target | |
| Alternative names | Fatty acid-binding protein, adipocyte;Adipocyte lipid-binding protein;ALBP;Adipocyte-type fatty acid-binding protein;A-FABP;AFABP;Fatty acid-binding protein 4;Fabp4; |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E. coli-derived rat FABP4 recombinant protein (Position: C2-A132). Rat FABP4 shares 88.5% and 93.9% amino acid (aa) sequence identity with human and mouse FABP4, respectively. |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody targets fatty acid-binding protein, adipocyte (gene Fabp4) in mouse and rat samples and is validated for ELISA and Western blot. The predicted molecular weight is 14.7 kDa, and the supplier reports an observed band at about 15 kDa.
FABP4 (also called aP2 or A-FABP) is a cytoplasmic fatty acid-binding protein expressed mainly in adipocytes and macrophages. It shuttles long-chain fatty acids inside the cell, and circulating FABP4 has been studied as a marker linked to insulin resistance and cardiovascular risk.
| Target | Fatty acid-binding protein, adipocyte (gene Fabp4; UniProt P70623, rat) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4; 0.05 mg NaN3 |
| Calculated MW | 14.7 kDa |
| Observed MW | 15 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 (Mouse, Rat) |
|---|---|
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): rat thymus tissue, rat heart tissue, mouse thymus tissue, mouse heart tissue.
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, 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.
Immunogen
Recombinant rat FABP4 fragment (Cys2–Ala132), expressed in E. coli. Sequence identity with the human and mouse orthologs: 88.5% and 93.9%, respectively.
Reactivity Notes
The supplier lists reactivity with mouse and rat. UniProt places fatty acid-binding protein, adipocyte in the cytoplasm and 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.
Rui Cai et al. (2019) A Novel lnc-RNA, Named lnc-ORA, Is Identified by RNA-Seq Analysis, and Its Knockdown Inhibits Adipogenesis by Regulating the PI3K/AKT/mTOR Signaling Pathway. Cells. 10.3390/cells8050477
