| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | CaSR, Extracellular calcium-sensing receptor, Parathyroid cell calcium-sensing receptor 1, PCaR1, GPRC2A |
| Clonality | |
| Conjugate | |
| Host | |
| Isotype | |
| Product Type | |
| Reactivity | |
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| Target |
Overview
Anti-Calcium Sensing Receptor (extracellular)-FITC Antibody is an antibody targeting CaSR, Extracellular calcium-sensing receptor, Parathyroid cell calcium-sensing receptor 1, PCaR1, GPRC2A Polyclonal raised in Rabbit (Fluorescein isothiocyanate (FITC)). This antibody is commonly used in FC, LCI to detect, localize, or compare expression of the target across samples.
Key elements and design rationale
- Target: CaSR, Extracellular calcium-sensing receptor, Parathyroid cell calcium-sensing receptor 1, PCaR1, GPRC2A (also reported as CaSR, Extracellular calcium-sensing receptor, Parathyroid cell calcium-sensing receptor 1, PCaR1, GPRC2A).
- Immunogen/epitope region: Extracellular, N-terminus.
- Homology note: Rat, mouse, bovine, dog - identical (informative for cross-species interpretation).
- Species reactivity (as provided): Human, Rat, Mouse.
- Lot quality control (as provided): Western blot analysis (unlabeled antibody, #ACR-004), and direct flow cytometry (labeled antibody)..
- Peptide confirmation: Confirmed by amino acid analysis and mass spectrometry.
- Blocking peptide: Available for antigen preadsorption control where appropriate.
- Conjugate/format: Fluorescein isothiocyanate (FITC) (may affect detection channel and background).
These attributes help researchers interpret whether signal reflects the intended target in a given assay and sample context.
Biological background
The calcium-sensing receptor (CaSR) is a class C G-protein-coupled receptor encoded by a single copy gene. CaSR plays a major role in the maintenance of a physiological serum ionized Ca2+ concentration by regulating the circulating levels of parathyroid hormone1.The N-terminus of the receptor is comprised of a signal peptide of 19 amino acids. This terminus directs the nascent CaSR polypeptide into the lumen of the endoplasmic reticulum (ER) and is then cleaved.
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
- 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: RIC-001-F.
- 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-CR004; Negative control: RIC-001-F.
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.
