| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | G-protein coupled receptor 55 |
| Clonality | |
| Conjugate | |
| Host | |
| Isotype | |
| Product Type | |
| Reactivity | |
| Shipping | |
| Storage | |
| Target |
Overview
Anti-Human GPR55 (extracellular) Antibody is an antibody targeting G-protein coupled receptor 55 Polyclonal raised in Rabbit (Unconjugated). This antibody is commonly used in IFC, WB to detect, localize, or compare expression of the target across samples.
Key elements and design rationale
- Target: G-protein coupled receptor 55 (also reported as G-protein coupled receptor 55).
- Immunogen/epitope region: 2nd extracellular loop.
- Homology note: Human only (informative for cross-species interpretation).
- Species reactivity (as provided): Human.
- Specificity statement (as provided): The antibody will not recognize the protein from rat or mouse samples..
- 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
GPR55 is an endocannabinoid receptor that belongs to group δ of the rhodopsin-like (class A) receptors. Like all other G-protein coupled receptors, it consists of seven trans-membrane helixes, intracellular C-terminal domain and extracellular N-terminal extension1.The other known cannabinoid receptors, CB1 and CB2 share low homology with GPR55 and have different ligand specificity and different downstream activated cascade. Thus, GPR55 consists on its own a class of cannabinoid receptor2.GPR55 is highly expressed in the striatum and binds a wide range of ligands, among which are endocannabinoids: Anadanine and 2-Arachidonoyl Glycerol, and phytocannabinoids: Tetrahydrocannabinol (THC), abnormal cannabinoid (CBD) and cannabidiol3.
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.
- 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.
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-CR061.
- 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-CR061; Negative control: BLP-CR061.
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.
