Os10g0158625 Antibody (Product Code: CSB-PA767111XA01OFG) is a polyclonal antibody developed for research applications targeting the Os10g0158625 protein in Oryza sativa subsp. japonica (rice). This antibody is primarily utilized in plant molecular biology and agricultural biotechnology studies to investigate gene expression, protein localization, and functional genomics in rice .
The Os10g0158625 protein is encoded by the rice gene locus Os10g0158625, which remains functionally uncharacterized in publicly available literature. Based on nomenclature conventions for rice genomics:
The antibody is designed to detect epitopes specific to this protein, though structural details (e.g., molecular weight, post-translational modifications) are not yet reported.
Protein Localization: Used to map Os10g0158625 expression in rice tissues via IHC .
Functional Studies: Assists in knock-out/knock-in experiments to elucidate gene roles in stress responses or developmental pathways .
Cross-Reactivity Testing: Potential utility in detecting homologous proteins in related plant species (e.g., indica rice subspecies) .
Specificity: Verified using recombinant Os10g0158625 protein in WB .
Batch Consistency: Standardized using affinity purification .
Uncharacterized Target: The biological function of Os10g0158625 remains unknown, limiting interpretability of results .
Species Specificity: Reactivity is confined to japonica rice, with no confirmed cross-reactivity to indica subspecies or other plants .
Antibody Validation: Absence of published studies using this antibody raises questions about reproducibility .
UniGene: Os.46864
Os10g0158625 is a gene in Oryza sativa subsp. japonica (Rice) that encodes a protein involved in plant development and stress response pathways. The antibody against this protein is critical for studying its expression patterns, localization, and functional roles in rice biology. Understanding this protein's function provides insights into rice growth regulation and potential targets for crop improvement. Similar rice antibodies have been extensively used to elucidate signaling pathways in plant development, as seen with related rice proteins like those encoded by Os10g0323000 .
Antibody validation is crucial for ensuring experimental reliability. For Os10g0158625 Antibody, multiple validation approaches should be employed simultaneously:
Western blot analysis: Confirm a single band at the expected molecular weight in wild-type samples and absence in knockout/knockdown lines
Immunohistochemistry (IHC) with controls: Include both positive and negative controls using tissues with known expression patterns
Immunoprecipitation followed by mass spectrometry: Verify that the antibody captures the intended protein
Pre-absorption test: Compare staining patterns with and without pre-absorption with the target antigen
This multi-modal validation approach is essential as demonstrated by studies showing that relying on single validation methods can lead to false positives. For instance, the ERβ antibody validation study revealed that only one of 13 commercially available antibodies was truly specific when rigorously tested .
Os10g0158625 Antibody can be employed in multiple research techniques:
Western blotting: For protein expression quantification
Immunoprecipitation: To study protein-protein interactions
Immunohistochemistry/Immunofluorescence: For cellular and subcellular localization
ChIP (Chromatin Immunoprecipitation): If the protein has DNA-binding capacity
ELISA: For quantitative protein detection
Each technique requires specific optimization parameters. For immunohistochemistry, determine optimal antibody concentration through serial dilutions (typically 1:100 to 1:1000), while Western blotting may require different blocking agents to reduce background signals.
Os10g0158625 Antibody can be utilized in co-immunoprecipitation (Co-IP) experiments followed by mass spectrometry to identify interacting partners under various stress conditions. This methodology reveals:
Dynamic interaction networks: By comparing protein partners under normal versus stress conditions
Post-translational modifications: Identifying how stress affects protein modification
Temporal dynamics: Examining how interaction patterns change over time during stress response
Implement a co-IP protocol using magnetic beads conjugated with Os10g0158625 Antibody at 4°C overnight, followed by stringent washing and elution steps. Similar approaches with WRKY transcription factors in rice have revealed key protein interactions in defense pathways .
Optimizing immunolocalization requires careful attention to multiple parameters:
Fixation protocol: Compare paraformaldehyde (4%) versus methanol fixation to determine which best preserves epitope accessibility
Antigen retrieval: Test citrate buffer (pH 6.0) versus EDTA buffer (pH 9.0) at different temperatures
Blocking solutions: Compare BSA (3-5%) versus normal serum (5-10%)
Antibody concentration: Perform titration series (1:50 to 1:1000)
Detection system: Compare fluorescent versus enzymatic detection methods
For particularly challenging rice tissues with high autofluorescence, implement sequential extraction steps with methanol and implement confocal microscopy settings to differentiate true signal from background. Researchers studying similar rice proteins have found that overnight incubation at 4°C with antibody dilutions between 1:200-1:500 yields optimal results for most rice tissues.
Discrepancies between protein detection and mRNA expression are common challenges in molecular biology research. To reconcile such contradictions:
Validate antibody specificity: Perform comprehensive validation as described in question 1.2
Consider post-transcriptional regulation: Investigate microRNA regulation or RNA stability factors
Examine protein turnover rates: Use cycloheximide chase assays to determine protein half-life
Assess translational efficiency: Implement polysome profiling to examine translation rates
Quantify with multiple methods: Compare results from Western blotting, mass spectrometry, and immunohistochemistry
Similar discrepancies have been observed in ERβ research, where detecting protein despite low mRNA levels led to years of contradictory findings until rigorous antibody validation revealed false positivity with most antibodies .
Rigorous controls for Western blot analysis include:
Positive control: Extract from tissues known to express Os10g0158625
Negative control: Extract from knockout/knockdown lines or unrelated species
Loading control: Housekeeping protein (e.g., actin, tubulin, GAPDH) to normalize expression
Molecular weight marker: To confirm correct band size
Secondary antibody-only control: To detect non-specific secondary antibody binding
Pre-adsorption control: Antibody pre-incubated with immunizing peptide
The antibody validation study for ERβ demonstrated how essential proper controls are—antibodies that appeared specific in limited testing showed clear false positivity when comprehensive controls were implemented .
A robust experimental design should include:
Time-course analysis: Sample collection at multiple time points (0, 1, 3, 6, 12, 24, 48 hours post-stress)
Multiple stress conditions: Compare drought, salt, cold, and heat stresses
Tissue specificity: Analyze roots, shoots, leaves, and reproductive organs separately
Biological replicates: Minimum of three independent experiments
Technical replicates: At least duplicate Western blots or immunohistochemistry analyses
Quantitative measures: Densitometry for Western blots with statistical analysis
Parallel transcript analysis: qRT-PCR to correlate protein with mRNA levels
This approach allows for comprehensive characterization of protein expression dynamics and has been successfully implemented in studies of rice WRKY transcription factors during biotic and abiotic stresses .
False positives in immunohistochemistry can stem from multiple sources:
Non-specific antibody binding: Implement more stringent blocking (5% BSA, 5% normal serum)
Cross-reactivity with similar proteins: Validate with peptide competition assays
Endogenous peroxidase activity: Include hydrogen peroxide quenching step (0.3% H₂O₂ for 15 minutes)
Endogenous biotin: Use biotin blocking system if using biotin-based detection
Autofluorescence in plant tissues: Implement Sudan Black B treatment (0.1% in 70% ethanol)
The ERβ antibody validation study revealed that 12 of 13 antibodies tested generated false positive signals, highlighting how prevalent this issue is even with commercially validated antibodies .
To enhance signal detection:
Increase protein concentration: Load 50-100 μg of total protein
Optimize extraction buffer: Include protease inhibitors and test different detergents (RIPA, NP-40)
Modify transfer conditions: Reduce transfer time or voltage for large proteins
Enhance epitope access: Test different antigen retrieval methods
Increase antibody concentration: Try 1:100 to 1:500 dilutions
Use signal enhancement systems: Implement tyramide signal amplification
Extend exposure time: For chemiluminescence detection
Use more sensitive detection method: Switch from colorimetric to chemiluminescence or fluorescence
For challenging rice proteins, protocols that include a membrane stripping step followed by reprobing at higher antibody concentration (1:200) have yielded improved results.
| Method | Advantages | Limitations | Complementary Approaches |
|---|---|---|---|
| Antibody-based detection | Direct protein visualization; quantifiable | Depends on antibody specificity | Mass spectrometry validation |
| Fluorescent protein tagging | Live-cell imaging; real-time dynamics | May affect protein function | Complement with untagged controls |
| RNA expression analysis | High-throughput; genome-wide context | Doesn't reflect protein levels | Combine with proteomics |
| CRISPR/Cas9 knockout | Direct functional assessment | May have pleiotropic effects | Rescue experiments |
| Yeast two-hybrid | High-throughput interaction screening | High false positive rate | Confirm with co-IP using antibody |
This comparative approach enables researchers to select optimal methods based on specific research questions while understanding inherent limitations of each technique.
Integration of antibody-based detection with -omics data requires:
Correlation analysis: Calculate Pearson/Spearman correlations between protein levels (Western blot) and mRNA expression (RNA-seq)
Time-lag analysis: Examine potential delays between transcription and protein accumulation
Pathway enrichment: Contextualize expression changes within biological pathways
Co-expression networks: Identify proteins with similar expression patterns
Data visualization: Generate integrated heatmaps showing protein and transcript levels
Implementing this multi-omics integration approach provides a comprehensive understanding of Os10g0158625 function within the broader cellular context.
Cutting-edge technologies to consider include:
Proximity labeling: BioID or TurboID fusions to identify proximal interacting proteins
Single-cell proteomics: Combining antibody-based detection with single-cell isolation
Super-resolution microscopy: Techniques like STORM or PALM for nanoscale localization
Microfluidic antibody arrays: For high-throughput, low-volume analyses
Tissue clearing techniques: For whole-organ 3D immunofluorescence imaging
These emerging approaches expand the utility of antibody-based detection beyond traditional applications and enable novel research questions to be addressed.
The following table provides a comparative overview of related rice antibodies that can serve as references for Os10g0158625 Antibody applications:
| Antibody Name | Code | Uniprot No. | Species | Size | Applications |
|---|---|---|---|---|---|
| Os10g0323000 Antibody | CSB-PA771933XA01OFG | Q7XFU9 | Oryza sativa subsp. japonica | 2ml/0.1ml | WB, IHC, IF |
| WRKY76 Antibody | CSB-PA916415XA01OFG | Q6EPZ2 | Oryza sativa subsp. japonica | 2ml/0.1ml | WB, IHC, ELISA |
| WRKY62 Antibody | CSB-PA995684XA01OFG | Q6EPZ0 | Oryza sativa subsp. japonica | 2ml/0.1ml | WB, IHC, ELISA |
| XXT1 Antibody | CSB-PA445830XA01OFG | Q10MQ0 | Oryza sativa subsp. japonica | 2ml/0.1ml | WB, IHC |
| XCT Antibody | CSB-PA731665XA01OFG | Q69JZ7 | Oryza sativa subsp. japonica | 2ml/0.1ml | WB, IHC |
| Os11g0242900 Antibody | CSB-PA684474XA01OFG | Q53N90 | Oryza sativa subsp. japonica | 2ml/0.1ml | WB, IHC |
| Os11g0303600 Antibody | CSB-PA776746XA01OFG | Q53QK0 | Oryza sativa subsp. japonica | 2ml/0.1ml | WB, IHC |
This table is derived from information about related rice antibodies and can serve as a reference for researchers working with Os10g0158625 Antibody.