| Field | Specification |
|---|---|
| Mfr No | |
| Accession Number | |
| Alternative Names | Potassium channel subfamily K member 18, TWIK-related spinal cord K+ channel, K2P18.1 |
| Clonality | |
| Conjugate | |
| Host | |
| Isotype | |
| Product Type | |
| Reactivity | |
| Shipping | |
| Storage | |
| Target |
Overview
Anti-KCNK18 (TRESK) (extracellular) Antibody is an antibody targeting Potassium channel subfamily K member 18, TWIK-related spinal cord K+ channel, K2P18.1 Polyclonal raised in Rabbit (Unconjugated). This antibody is commonly used in IC, IF, IHC, LCI, WB to detect, localize, or compare expression of the target across samples.
Key elements and design rationale
- Target: Potassium channel subfamily K member 18, TWIK-related spinal cord K+ channel, K2P18.1 (also reported as Potassium channel subfamily K member 18, TWIK-related spinal cord K+ channel, K2P18.1).
- Immunogen/epitope region: 1st extracellular loop.
- Homology note: Rat - 13/14 amino acid residues identical (informative for cross-species interpretation).
- Species reactivity (as provided): Rat, Mouse.
- Specificity statement (as provided): Unlikely to recognize human 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
KCNK18 (also named TWIK-related spinal cord K+ channel, TRESK or K2P18.1) is a member of the 2-pore (2P) domain K+ channel family that currently includes 16 members. These channels show little time- or voltage-dependence and are considered to be "leak" or "background" K+ channels, thereby generating background currents which help set the membrane resting potential and control cell excitation.1The K2P channels have a signature topology that includes four transmembrane domains and two pore domains with intracellular N- and C- termini. It has been proposed that the functional channel unit is a dimer.Different K2P family members are regulated by diverse physical and chemical stimuli including temperature, pH, mechanical stretch, inhalation anesthetics, signaling pathways (PKC and PKA), arachidonic acid, etc.KCNK18 is the only K2P channel, known so far, whose current is activated following Gαq-receptor coupled activation.
Research relevance and current trends
- Linking transporter/channel abundance to ionic homeostasis and excitability-related phenotypes.
- Studying compartment-specific localization (surface vs intracellular pools) and trafficking dynamics.
- Combining antibody readouts with functional assays for more complete interpretation.
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.
- 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-PC122.
- 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-PC122; Negative control: BLP-PC122.
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.
