| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | Calcium homeostasis modulator protein 2, Protein FAM26B, FAM26B |
| Clonality | |
| Conjugate | |
| Host | |
| Isotype | |
| Product Type | |
| Reactivity | |
| Shipping | |
| Storage | |
| Target |
Overview
Anti-CALHM2 (extracellular)-FITC Antibody is an antibody targeting Calcium homeostasis modulator protein 2, Protein FAM26B, FAM26B 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: Calcium homeostasis modulator protein 2, Protein FAM26B, FAM26B (also reported as Calcium homeostasis modulator protein 2, Protein FAM26B, FAM26B).
- Immunogen/epitope region: Extracellular, 2nd loop..
- Homology note: Rat - 13 out of 14 amino acid residues identical Human - 11 out of 14 amino acid residues identical (informative for cross-species interpretation).
- Species reactivity (as provided): Human, Rat, Mouse.
- Lot quality control (as provided): Western blot analysis (unlabeled antibody, #ACC-142), 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
Calcium homeostasis modulator protein 2 (CALHM2) is a member of the CALHM channel family, a group of transmembrane proteins that play essential roles in calcium ion transport and homeostasis. The CALHM family consist in humans of six members: CALHM1 to CALHM6.1CALHM2 functions as a calcium-permeable ion channel. It allows calcium ions to pass through the cell membrane in response to specific stimuli, such as changes in membrane potential or extracellular calcium concentration.2,3CALHM2 is composed of 323 amino acids and assembles as an undecamer with each protomer containing a large N-terminal transmembrane (TM) domain with 4 TM helices, an intracellular C-terminal domain, and a small extracellular linker region.
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-CC142; 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.
