| Field | Specification |
|---|---|
| Target | |
| Alternative names | Free fatty acid receptor 1; G-protein coupled receptor 40; FFAR1; GPR40 |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | A synthetic peptide corresponding to a sequence at the C-terminus of human GPCR GPR40, which shares 88% and 84% amino acid (aa) sequence identity with mouse and rat GPCR GPR40, respectively. |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody targets free fatty acid receptor 1 (gene FFAR1) in human, mouse and rat samples and is validated for Western blot. The predicted molecular weight is 31.5 kDa, and the supplier reports an observed band at about 31 kDa.
Free fatty acid receptor 1 (FFAR1, GPR40) is a G protein-coupled receptor activated by medium- and long-chain fatty acids. It is highly expressed in pancreatic beta cells, where fatty acid binding enhances glucose-stimulated insulin secretion, and it is also found in enteroendocrine cells. FFAR1 is studied in glucose homeostasis and type 2 diabetes drug research.
| Target | Free fatty acid receptor 1 (gene FFAR1; UniProt O14842, 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 | 31.5 kDa |
| Observed MW | 31 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 |
|---|
Samples with a confirmed band (WB): human PANC-1 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.
Immunogen
Synthetic peptide from the C-terminal region of human GPCR GPR40. Sequence identity with the mouse and rat orthologs: 88% and 84%, respectively.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. UniProt places free fatty acid receptor 1 in the cell membrane. Tissue expression noted by UniProt (human): Detected in brain and pancreas. 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.
Jian-Hong Lin et al. (2021) Palmitic Acid Methyl Ester Enhances Adipogenic Differentiation in Rat Adipose Tissue-Derived Mesenchymal Stem Cells through a G Protein-Coupled Receptor-Mediated Pathway. Stem Cells International. 10.1155/2021/9938649
