OR8K1 (Olfactory Receptor Family 8 Subfamily K Member 1) is a G protein-coupled receptor primarily associated with olfactory signaling. While its canonical role involves odorant detection, emerging studies suggest ectopic expression in non-olfactory tissues, though specific functions remain poorly characterized .
Commercially available OR8K1 antibodies are exclusively polyclonal, produced by immunizing host animals with synthetic peptides or recombinant protein fragments. Key suppliers and their offerings include:
| Provider | Catalog No. | Host | Applications | Validation Data |
|---|---|---|---|---|
| antibodies-online | ABIN2498637 | Rabbit | ELISA, ICC, IHC | Peer-reviewed publications |
| GeneTex | GTX87097 | Rabbit | ELISA, ICC | Data on provider website |
| St John's Laboratory | STJ94815 | Rabbit | ELISA, ICC, IHC | Antibodypedia-supported |
| Cusabio Biotech | CSB-PA009736 | Rabbit | ELISA, ICC | Inconclusive validation |
Notes:
Host Reactivity: All listed antibodies are raised in rabbits.
Conjugate Options: Unconjugated versions dominate; customizable conjugates (e.g., HRP, FITC) may be available upon request.
Validation: Most providers cite in-house data (western blot, immunohistochemistry), but independent peer-reviewed studies are scarce .
OR8K1 antibodies are primarily used for:
Immunohistochemistry (IHC): Localizing OR8K1 in olfactory epithelium and other tissues.
Enzyme-Linked Immunosorbent Assay (ELISA): Quantifying OR8K1 expression levels in lysates.
Immunocytochemistry (ICC): Visualizing subcellular distribution in cultured cells .
Specificity Concerns: No monoclonal antibodies are available, raising risks of off-target binding.
Lack of Structural Data: OR8K1’s 3D conformation is uncharacterized, complicating epitope verification.
Research Gaps: No clinical or functional studies directly using OR8K1 antibodies are documented in public databases .
CRISPR-Based Validation: Knockout cell lines could confirm antibody specificity.
Proteomic Mapping: Mass spectrometry paired with immunoprecipitation may identify interaction partners.
Therapeutic Exploration: Olfactory receptors are under investigation in metabolic and neurological disorders, suggesting potential translational avenues .
OR8K1 (olfactory receptor family 8 subfamily K member 1, also known as Olfactory receptor OR11-182) is a human olfactory receptor protein encoded by the OR8K1 gene (Gene ID: 390157) located on chromosome 11. As a member of the olfactory receptor family, OR8K1 is part of the G protein-coupled receptor superfamily that mediates olfactory signal transduction .
The research importance of OR8K1 stems from understanding olfactory system function and potentially non-canonical roles of olfactory receptors in other tissues. Studying OR8K1 using specific antibodies allows researchers to:
Map tissue and cellular expression patterns
Investigate receptor trafficking and localization
Explore potential roles beyond olfaction in various physiological and pathological contexts
Commercial OR8K1 antibodies have been validated for multiple applications with specific recommended dilutions:
When designing experiments, it's advisable to optimize these dilutions for your specific sample type and experimental conditions through titration experiments.
Proper storage and handling are critical for maintaining antibody functionality:
Storage temperature: Most OR8K1 antibodies require storage at -20°C for long-term preservation
Short-term storage: Some products may be stored at 2-8°C for short periods
Shipping conditions: Typically shipped on wet ice or blue ice
Buffer composition: Most commercial OR8K1 antibodies are supplied in buffered aqueous solutions, often containing glycerol and/or BSA as stabilizers
Avoid repeated freeze-thaw cycles: Aliquot antibodies upon first thaw to minimize degradation
Expiration: Typical shelf-life is 12 months from shipment date when properly stored
Different commercial OR8K1 antibodies target distinct epitope regions, which impacts their specificity and application suitability:
When selecting an antibody for your research:
Consider which domain of OR8K1 is most relevant to your study
Evaluate if post-translational modifications might affect epitope accessibility
Assess whether conformational changes in your experimental conditions might impact antibody binding
Rigorous validation is essential for reliable results. Implement these methodological approaches:
Positive and negative controls:
Use tissues/cells known to express OR8K1 (based on transcriptomic data)
Include tissues/cells with minimal OR8K1 expression
Consider using knockout or siRNA-treated samples
Multiple detection methods:
Compare results across different applications (e.g., WB, IHC, IF)
Verify findings with at least two different OR8K1 antibodies targeting distinct epitopes
Western blot assessment:
Orthogonal validation:
Compare protein detection with mRNA expression data
Use mass spectrometry to confirm identity of the immunoprecipitated protein
When encountering inconsistent results, consider these methodological interventions:
For Western blotting issues:
Optimize protein extraction protocols (consider membrane protein-specific methods)
Test different blocking agents (5% BSA vs. 5% milk)
Adjust antibody incubation conditions (temperature, time, buffer composition)
Try different detection systems (HRP vs. fluorescent secondary antibodies)
For immunohistochemistry challenges:
Evaluate fixation methods (formalin vs. paraformaldehyde)
Test multiple antigen retrieval approaches (heat-induced vs. enzymatic)
Optimize tissue section thickness (5-10 μm typically optimal)
Consider signal amplification methods for low-abundance targets
For immunofluorescence difficulties:
Adjust permeabilization conditions (Triton X-100 concentration and duration)
Test different mounting media to reduce autofluorescence
Implement quenching steps to reduce background
Consider using tyramide signal amplification for weak signals
Recent advances in computational methods can enhance OR8K1 antibody research:
Active learning algorithms have been developed to improve antibody-antigen binding prediction in library-on-library settings. These approaches have demonstrated:
Reduction in required antigen mutant variants by up to 35%
Acceleration of the learning process by 28 steps compared to random baseline approaches
Significant improvement in out-of-distribution prediction performance
For OR8K1 antibody development or epitope mapping studies, researchers might implement:
Machine learning models to analyze many-to-many relationships between antibodies and antigens
Iterative experimental design where small labeled datasets are expanded based on model predictions
Computational screening of potential binding sites before experimental validation
These approaches are particularly valuable when working with limited resources or when targeting specific OR8K1 epitopes.
Multiplexed detection involving OR8K1 requires careful methodological planning:
Antibody selection considerations:
Choose OR8K1 antibodies raised in different host species than other target antibodies
Verify absence of cross-reactivity between all antibodies in the panel
Select OR8K1 antibodies with compatible working dilutions to other panel antibodies
Signal separation strategies:
For fluorescent multiplexing: Select fluorophores with minimal spectral overlap
For chromogenic multiplexing: Use distinct chromogens with good spatial separation
Consider sequential detection protocols if antibody compatibility is problematic
Validation requirements:
Test each antibody individually before combining
Include single-stained controls for each target
Perform blocking studies to confirm specificity in the multiplexed context
Analysis considerations:
Implement computational methods to address spectral unmixing if needed
Use quantitative image analysis to assess co-localization relationships
Consider advanced approaches like imaging mass cytometry for highly multiplexed studies
OR8K1 antibodies enable sophisticated experimental approaches for investigating olfactory receptor biology:
Subcellular localization studies:
Super-resolution microscopy with OR8K1 antibodies can reveal precise distribution patterns
Co-localization with trafficking markers (Rab GTPases, adaptor proteins) illuminates receptor transport
Live-cell imaging using fluorescently-tagged anti-OR8K1 Fab fragments can track dynamic processes
Protein interaction investigations:
Co-immunoprecipitation using OR8K1 antibodies can identify novel binding partners
Proximity ligation assays can confirm protein-protein interactions in situ
FRET/BRET approaches incorporating OR8K1 antibodies can measure interaction dynamics
Functional studies:
Antibody-mediated receptor internalization experiments
Analysis of receptor conformational changes using conformation-specific OR8K1 antibodies
Investigation of heterologous expression systems using OR8K1 antibodies as validation tools
These approaches contribute to understanding the fundamental biology of olfactory receptors beyond their canonical roles.
Understanding the tradeoffs between polyclonal and monoclonal antibodies informs optimal research design:
Methodological recommendations:
Use polyclonal antibodies for initial characterization and detection of low-abundance targets
Consider monoclonal antibodies for applications requiring high reproducibility across experiments
For critical research findings, validate with both antibody types when possible
Robust experimental design requires appropriate controls for each application:
For Western blotting:
Positive control: Lysate from cells with known OR8K1 expression (e.g., MDA-MB435 cell line)
Negative control: Lysate from cells with minimal OR8K1 expression
Technical control: Loading control (β-actin, GAPDH) to normalize protein amounts
Validation control: Peptide competition with immunizing peptide
For immunohistochemistry/immunofluorescence:
Positive control: Tissue with documented OR8K1 expression
Negative control: Primary antibody omission
Isotype control: Non-specific IgG from same species as primary antibody
Absorption control: Primary antibody pre-incubated with excess antigen peptide
For ELISA:
Standard curve using recombinant OR8K1 protein
Blank wells (no sample)
Background controls (no primary antibody)
Specificity controls (competition with free antigen)
Recent research has expanded interest in OR8K1 beyond the olfactory epithelium:
Cancer research applications:
Investigating OR8K1 expression in various tumor types
Exploring correlations between OR8K1 expression and clinical outcomes
Studying potential roles in cancer cell migration and proliferation
Systems biology approaches:
Proteome-wide studies incorporating OR8K1 detection
Multi-omics integration comparing OR8K1 protein and transcript levels
Pathway analysis to identify signaling networks involving OR8K1
Methodological innovations:
Single-cell protein profiling including OR8K1
Spatial transcriptomics combined with OR8K1 immunodetection
Tissue-clearing techniques with deep-tissue OR8K1 immunolabeling
These emerging applications highlight the need for well-characterized OR8K1 antibodies with documented specificity across diverse tissue types.