| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | Cholecystokinin B receptor, Gastrin receptor, CCK2R, GASR |
| Clonality | |
| Conjugate | |
| Host | |
| Isotype | |
| Product Type | |
| Reactivity | |
| Shipping | |
| Storage | |
| Target |
Overview
Anti-CCKBR (extracellular) Antibody is an antibody targeting Cholecystokinin B receptor, Gastrin receptor, CCK2R, GASR Polyclonal raised in Rabbit (Unconjugated). This antibody is commonly used in IFC, IHC, LCI, WB to detect, localize, or compare expression of the target across samples.
Key elements and design rationale
- Target: Cholecystokinin B receptor, Gastrin receptor, CCK2R, GASR (also reported as Cholecystokinin B receptor, Gastrin receptor, CCK2R, GASR).
- Immunogen/epitope region: Extracellular, N-terminus.
- Homology note: Rat - 14/15 amino acid residues identical; human - 13/15 amino acid residues identical (informative for cross-species interpretation).
- Species reactivity (as provided): Human, Rat, Mouse.
- Cited use: IFC (literature use does not guarantee performance in every setup).
- Lot quality control (as provided): Western blot analysis.
- Peptide confirmation: Confirmed by amino acid analysis and mass spectrometry.
- Blocking peptide: Available for antigen preadsorption control where appropriate.
These attributes help researchers interpret whether signal reflects the intended target in a given assay and sample context.
Biological background
Cholecystokinin B receptor (CCKBR), also known as the Gastrin receptor and CCKR2, belongs to the 7-transmembrane domain, G-protein coupled receptor (GPCR) superfamily, and is one of the two receptors that mediates the effects of the cholecystokinin (CCK) and gastrin peptides1,2.CCK and gastrin are related linear peptides that occur in different forms but share the last five C-terminal amino acid residues. CCK regulates several nutritional-related activities such as stimulation of pancreatic exocrine secretion or the regulation of intestinal transit, while gastrin's main function is the stimulation of gastric acid secretion1,2.Both CCKBR and the other CCK receptor (CCKAR or CCK1R) are coupled to a Gq/11 protein that activates phospholipase C (PLC) and leads to production of inositol 1,4,5-trisphosphate (InsP3), and intracellular Ca2+mobilization.CCKBR was originally identified in the brain (and hence its name, type B for Brain) where it is widely distributed, notably in the cerebral cortex and striatum. In the periphery, CCKBR is most notably expressed in acid secreting cells in the mucosa of the stomach.
Research relevance and current trends
- Comparing target expression across perturbations, genotypes, or treatment conditions.
- Interpreting localization shifts alongside pathway or phenotypic readouts.
- Using orthogonal controls (KO/KD, peptide competition, isotype concepts) to support conclusions.
Common research applications
- Western blot (WB): compare target abundance/size across lysates and conditions; consider isoforms/PTMs.
- Immunohistochemistry (IHC): examine spatial distribution in tissue and relate signal to cell-type composition.
- Immunofluorescence/ICC: assess subcellular localization and co-localization with markers in cells or sections.
- Flow cytometry (direct/indirect): quantify target-positive populations and shifts in expression across subsets.
- Live cell imaging (LCI): support extracellular-epitope detection on non-permeabilized cells when appropriate.
Interpretation typically benefits from comparing matched sample sets (e.g., treated vs control, WT vs KO/KD) and using orthogonal readouts where feasible.
Notes for experimental interpretation
- Isoforms and post-translational modifications can shift apparent molecular weight or epitope accessibility across samples.
- Cross-species signal may depend on epitope conservation; consult the provided homology note when selecting models.
- Permeabilization, fixation, and antigen retrieval can change accessibility of intracellular vs extracellular epitopes.
- Conceptual control: antigen preadsorption (blocking peptide) can help assess signal dependence on the immunogen region.
- Provided control suggestions: Negative control: BLP-CR042.
- Application notes: see product-specific dilution/usage notes and control concepts provided in the dataset.
Application abbreviations: CBE- Cell-based ELISA, FC- Flow cytometry, ICC- Immunocytochemistry, IE- Indirect ELISA, IF- Immunofluorescence, IFC- Indirect flow cytometry, IHC- Immunohistochemistry, IP- Immunoprecipitation, LCI- Live cell imaging, N- Neutralization, WB- Western blot. Species abbreviations: H- Human, M- Mouse, R- Rat.
Recommended controls: Blocking peptide: BLP-CR042; Negative control: BLP-CR042.
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.
