Nomenclature Issues:
May represent a non-standardized identifier or unpublished internal code name.
Could involve typographical errors (e.g., CYP71B25 vs. CYP71B23/24/26 homologs).
Research Stage:
Might be an early-stage research tool not yet commercialized or published.
Could belong to proprietary pipelines (e.g., unpublished industry projects).
Nomenclature Verification:
Confirm the exact compound designation with original authors or patent filings.
Alternative Search Strategies:
Screen non-English databases (e.g., China National Knowledge Infrastructure).
Query chemical supplier catalogs (e.g., Thermo Fisher, Abcam) for unreleased products.
Experimental Validation: Perform Western Blot/ELISA using polyclonal sera if preliminary epitope data exists.
CYP71B25 is a cytochrome P450 enzyme belonging to the CYP71B subfamily, primarily expressed in plants. This enzyme participates in secondary metabolite biosynthesis pathways, particularly those involved in plant defense responses against pathogens and herbivores. CYP71B25 catalyzes mono-oxygenation reactions, introducing oxygen atoms into various substrates, thereby increasing their solubility and reactivity. In Arabidopsis thaliana, CYP71B25 has been implicated in the biosynthesis of specific terpenoids and phenylpropanoids that serve as defense compounds. Understanding CYP71B25's function requires specific and sensitive detection methods, with antibodies serving as critical tools for tracking protein expression, localization, and interactions.
Both polyclonal and monoclonal antibodies against CYP71B25 are available for research applications. Polyclonal antibodies recognize multiple epitopes on the CYP71B25 protein and are typically generated in rabbits, goats, or chickens immunized with purified CYP71B25 protein or specific peptide sequences. Monoclonal antibodies, produced from single B-cell clones, recognize specific epitopes and offer higher specificity but potentially lower sensitivity compared to polyclonal antibodies . Domain-specific monoclonal antibodies can be designed to target particular regions of CYP71B25, similar to approaches used for other proteins like CIP75, where antibodies have been developed against specific domains (N-terminal, middle region, or C-terminal) . The choice between polyclonal and monoclonal antibodies depends on the specific research application, with each offering distinct advantages.
Generation of CYP71B25 antibodies typically follows standard immunization protocols. For monoclonal antibodies, the process involves:
Expressing and purifying recombinant CYP71B25 protein (often as His-tagged fusion proteins)
Immunizing mice or rabbits with the purified protein using appropriate adjuvants (e.g., Freund's complete or alum adjuvants)
Administering booster immunizations at 3-week intervals
Testing blood samples via ELISA to confirm immune response
Harvesting spleen cells and fusing them with myeloma cells using polyethylene glycol to create hybridomas
Selecting hybridomas using HAT-supplemented medium
Screening positive clones via ELISA and subcloning 2-3 times
Characterization involves testing antibodies via multiple methods including Western blotting, immunoprecipitation, and immunofluorescence microscopy. Specificity is confirmed using deletion mutants and domain-specific constructs to map binding epitopes . Cross-reactivity with related CYP proteins must be thoroughly assessed to ensure reliable experimental results.
For optimal longevity and performance of CYP71B25 antibodies, follow these research-validated storage and handling practices:
Store concentrated antibody stocks at -80°C in small aliquots to minimize freeze-thaw cycles
For short-term storage (1-2 months), maintain working dilutions at 4°C with 0.02% sodium azide as preservative
Avoid repeated freeze-thaw cycles, which can lead to antibody denaturation and reduced activity
Prior to use, centrifuge antibody solutions briefly (5 minutes at 10,000g) to remove any aggregates
When diluting antibodies, use high-quality BSA (1-5%) as a stabilizer in appropriate buffers (typically PBS or TBS)
For long-term storage of hybridoma lines, maintain them in liquid nitrogen with 10% DMSO as cryoprotectant
Commercially available antibody stabilizers can extend shelf-life by protecting against microbial contamination and denaturation. Document all storage conditions, freeze-thaw cycles, and dilution factors to maintain experimental reproducibility.
Rigorous quality control is essential for reliable CYP71B25 antibody performance. Implement the following validation steps:
Specificity testing against recombinant CYP71B25 and related CYP family proteins
Epitope mapping using deletion mutants and domain-specific constructs
Blocking experiments with purified domains to confirm binding specificity
Testing recognition of both native and denatured forms of the protein
Cross-species reactivity assessment if using the antibody across different plant species
Domain-specific validation is particularly important, as demonstrated with other proteins where antibodies specifically recognizing N-terminal, middle region, or C-terminal domains have been developed . Additionally, perform negative controls using tissues or cell lines where CYP71B25 is not expressed or using CYP71B25 knockout plants when available.
When designing immunoassays for CYP71B25 detection, consider these critical parameters:
These principles have been successfully applied to other proteins, as demonstrated in the literature on monoclonal antibody development .
For optimal Western blot detection of CYP71B25, implement this research-based protocol:
Sample preparation:
Extract total proteins from plant tissues using appropriate extraction buffer (typically containing 50 mM Tris-HCl pH 7.5, 150 mM NaCl, 1% Triton X-100, 0.5% sodium deoxycholate, protease inhibitor cocktail)
Determine protein concentration using Bradford or BCA assay
Denature samples in Laemmli buffer at 95°C for 5 minutes
Gel electrophoresis:
Load 20-50 μg of total protein per lane
Use 10-12% SDS-PAGE gels for optimal separation of CYP71B25 (approximately 55 kDa)
Transfer and blocking:
Transfer proteins to PVDF membrane (more suitable than nitrocellulose for hydrophobic CYP proteins)
Block with 5% non-fat milk in TBST for 1 hour at room temperature
Antibody incubation:
Primary antibody dilution: 1:500 to 1:2000 in blocking buffer, incubate overnight at 4°C
Wash 3× with TBST, 10 minutes each
Secondary antibody dilution: 1:5000 to 1:10000, incubate for 1 hour at room temperature
Wash 3× with TBST, 10 minutes each
Detection and validation:
This approach has been validated with other proteins where domain-specific monoclonal antibodies successfully detected both recombinant and endogenous protein expression .
For high-quality immunofluorescence localization of CYP71B25 in plant cells, follow this optimized protocol:
Sample preparation:
Fix plant tissues or cells with 4% paraformaldehyde in PBS for 20 minutes
Permeabilize with 0.1% Triton X-100 in PBS for 10 minutes
Block with 3% BSA in PBS for 30 minutes
Primary antibody incubation:
Dilute CYP71B25 antibodies 1:100 to 1:500 in blocking solution
Incubate overnight at 4°C in a humid chamber
Wash 3× with PBS, 5 minutes each
Secondary antibody incubation:
Use fluorophore-conjugated secondary antibodies (Alexa Fluor series recommended)
Dilute 1:500 to 1:1000 in blocking solution
Incubate 1 hour at room temperature in the dark
Wash 3× with PBS, 5 minutes each
Subcellular marker co-labeling:
Mounting and imaging:
Mount slides with anti-fade mounting medium containing DAPI for nuclear staining
Image with confocal microscopy using appropriate laser settings
This approach has been successfully used for other proteins, demonstrating subcellular localization patterns through co-labeling with organelle markers .
For effective immunoprecipitation of CYP71B25 from plant extracts, implement this research-validated protocol:
Cell/tissue lysis:
Grind plant material in liquid nitrogen
Extract proteins using IP buffer (50 mM Tris-HCl pH 7.5, 150 mM NaCl, 1% NP-40, 0.5% sodium deoxycholate, protease inhibitor cocktail)
Centrifuge at 14,000g for 15 minutes at 4°C
Pre-clear lysate with Protein A/G beads for 1 hour at 4°C
Antibody binding:
Add 2-5 μg of CYP71B25 antibody to 500 μg of total protein
Incubate overnight at 4°C with gentle rotation
Add 30 μl of pre-washed Protein A/G beads
Incubate for 2-3 hours at 4°C with gentle rotation
Washing and elution:
Wash beads 4× with IP buffer
Elute bound proteins by boiling in 2× Laemmli buffer for 5 minutes
Analysis:
Analyze immunoprecipitated proteins by SDS-PAGE and Western blotting
Use a different CYP71B25 antibody (recognizing a different epitope) for detection to confirm specificity
Validation controls:
This approach has been demonstrated to effectively immunoprecipitate endogenous proteins from cell lysates, as shown in similar experiments with other proteins where domain-specific antibodies were used to confirm specificity .
To rigorously validate CYP71B25 antibody specificity, implement these comprehensive approaches:
Recombinant protein controls:
Test antibody recognition against purified full-length CYP71B25
Use domain-specific constructs to map epitope recognition
Include related CYP family members to assess cross-reactivity
Blocking experiments:
Genetic controls:
Test antibodies on samples from CYP71B25 knockout or knockdown plants
Observe absence of signal in negative controls
Multiple detection methods:
Confirm specificity across different applications (Western blotting, immunoprecipitation, immunofluorescence)
Each method provides complementary validation data
Mass spectrometry validation:
Perform immunoprecipitation followed by mass spectrometry
Confirm the identity of pulled-down proteins
Using these approaches has proven effective in validating antibody specificity, as demonstrated with other proteins where domain-specific monoclonal antibodies were confirmed through blocking experiments and multiple detection methods .
CYP71B25 antibodies offer powerful tools for investigating plant stress responses through these advanced applications:
Stress-induced expression profiling:
Expose plants to various stressors (pathogens, herbivores, abiotic stress)
Use quantitative Western blotting to measure CYP71B25 protein levels over time
Compare protein levels with transcript abundance to identify post-transcriptional regulation
Subcellular relocalization studies:
Monitor potential stress-induced changes in CYP71B25 localization using immunofluorescence microscopy
Co-label with organelle markers to track relocalization dynamics
Implement high-resolution confocal imaging with quantitative colocalization analysis
Protein complex dynamics:
Use co-immunoprecipitation with CYP71B25 antibodies followed by mass spectrometry
Identify stress-specific protein interaction partners
Compare interaction networks under normal versus stress conditions
Post-translational modifications:
Immunoprecipitate CYP71B25 from stressed and unstressed plants
Analyze for phosphorylation, ubiquitination, or other modifications
Correlate modifications with enzyme activity or localization changes
This approach builds on established methodologies for studying protein dynamics during cellular responses, similar to techniques used for investigating other proteins' roles in cellular processes .
To investigate CYP71B25 protein interactions comprehensively, employ these advanced methodologies:
Co-immunoprecipitation (Co-IP):
Proximity labeling:
Generate CYP71B25-BioID or TurboID fusion proteins
Identify proteins in close proximity through biotinylation
Confirm interactions using CYP71B25 antibodies in validation studies
Fluorescence microscopy techniques:
Perform dual immunofluorescence labeling with CYP71B25 and potential partners
Quantify colocalization using Pearson's correlation coefficient
Implement FRET or BiFC for direct interaction studies
In situ proximity ligation assay (PLA):
Use CYP71B25 antibodies with antibodies against potential partners
Visualize interactions (within 40 nm) as distinct fluorescent spots
Quantify interaction events in different cellular compartments or conditions
These approaches have been successfully applied to study protein-protein interactions in plant systems, building on established antibody-based techniques demonstrated in the literature .
CYP71B25 antibodies provide valuable tools for dissecting biosynthetic pathways through these methodological approaches:
Metabolic flux analysis:
Monitor CYP71B25 protein levels during biosynthetic pathway activation
Correlate protein abundance with metabolite profiles using LC-MS/MS
Identify rate-limiting steps in the pathway
Enzyme complex identification:
Subcellular compartmentalization studies:
Use immunogold electron microscopy to precisely localize CYP71B25
Identify specialized metabolic compartments
Study dynamic relocalization during pathway activation
Pathway reconstitution:
Use immunodepletion with CYP71B25 antibodies to remove the enzyme from plant extracts
Test effects on metabolite production in vitro
Add purified CYP71B25 for complementation studies
These approaches build on established antibody-based methodologies for studying protein involvement in biological processes, similar to techniques used to investigate other proteins' functional roles .
When applying CYP71B25 antibodies across diverse plant species, researchers must address these challenges:
Epitope conservation issues:
Sequence divergence in CYP71B25 homologs may reduce antibody recognition
Solution: Generate antibodies against highly conserved domains, or develop species-specific antibodies
Validate cross-reactivity empirically for each new species
Background and cross-reactivity:
Extraction optimization:
Different plant species require optimized protein extraction methods
Solution: Test multiple extraction buffers with species-specific modifications
Include appropriate detergents for membrane-associated CYP71B25
Quantitative comparison limitations:
Variable antibody affinity across species limits direct quantitative comparisons
Solution: Develop standard curves with recombinant proteins from each species
Use relative rather than absolute quantification when comparing species
This approach to cross-species antibody application builds on established principles for overcoming species barriers in immunological detection, similar to approaches used for other conserved proteins .
Detailed epitope mapping significantly enhances CYP71B25 antibody utility through these methodological approaches:
Domain-specific antibody generation:
Post-translational modification detection:
Develop modification-specific antibodies (phospho-, glyco-, ubiquitin-specific)
Map regulatory sites affecting enzyme activity or localization
Correlate modifications with functional states
Structure-function analysis:
Map accessible epitopes to structural models of CYP71B25
Identify antibodies that affect enzyme activity through binding
Use epitope accessibility as a proxy for conformational changes
Improved immunoassay development:
Optimize antibody pairs for sandwich ELISA based on epitope mapping
Reduce steric hindrance in detection systems
Enhance specificity through epitope-guided antibody selection
This epitope-centered approach has been demonstrated effective for other proteins, where domain-specific monoclonal antibodies enabled detailed analysis of protein structure and function .
Researchers commonly encounter these specificity challenges with CYP71B25 antibodies, along with evidence-based solutions:
Cross-reactivity with related CYP enzymes:
Non-specific background in plant extracts:
Problem: Plant secondary metabolites may cause high background
Solution: Optimize extraction buffers with additional washing steps
Include plant-specific blocking agents (e.g., non-fat milk instead of BSA)
Pre-absorb antibodies with extracts from CYP71B25 knockout plants
Conformational epitope recognition issues:
Post-translational modification interference:
Problem: Modifications may mask antibody epitopes
Solution: Generate modification-insensitive antibodies
Use phosphatases or deglycosylation enzymes to remove modifications
Compare detection patterns before and after modification removal
These approaches build on established troubleshooting methods demonstrated effective for other antibody-based detection systems .
When faced with discrepancies between different CYP71B25 antibody assays, implement this systematic interpretation framework:
Epitope recognition differences:
Methodological differences:
Western blotting detects denatured protein while immunoprecipitation captures native conformations
Immunofluorescence may be affected by fixation methods
Compare results across multiple methods using the same antibody
Quantitative validation approach:
Reconciliation strategies:
Use orthogonal approaches (e.g., mass spectrometry) to validate findings
Consider biological variables (tissue type, developmental stage, stress conditions)
Examine post-translational modifications that might affect epitope recognition
This systematic approach to resolving conflicting results has been demonstrated effective in other protein studies where multiple detection methods provided complementary data .
To optimize signal-to-noise ratio in CYP71B25 detection, implement these evidence-based strategies:
Antibody purification and concentration:
Blocking optimization:
Test different blocking agents (BSA, casein, non-fat milk, commercial blockers)
Optimize blocking time and temperature
Include specific competitors to reduce non-specific binding
Sample preparation refinement:
Detection system enhancement:
Use signal amplification systems (e.g., tyramide signal amplification)
Implement highly sensitive detection reagents (e.g., SuperSignal West Femto)
Consider direct fluorophore-conjugated antibodies to eliminate secondary antibody background
Background reduction techniques:
Increase wash stringency (higher salt concentration, mild detergents)
Extend washing times and increase number of washes
Use specialized low-background detection systems
These approaches have been demonstrated effective in optimizing detection of challenging proteins in complex biological samples .
For precise quantification of CYP71B25 protein levels, implement these methodologically rigorous approaches:
Western blot quantification:
Use internal loading controls (housekeeping proteins)
Include recombinant CYP71B25 standard curve on each blot
Employ digital image analysis software with background subtraction
Ensure working in the linear range of detection
ELISA-based quantification:
Develop sandwich ELISA using two antibodies recognizing different epitopes
Generate standard curves using purified recombinant CYP71B25
Implement four-parameter logistic regression for curve fitting
Use technical triplicates and biological replicates
Mass spectrometry-based approaches:
Develop selected reaction monitoring (SRM) assays for CYP71B25-specific peptides
Use stable isotope-labeled internal standards for absolute quantification
Combine immunoprecipitation with mass spectrometry for enhanced sensitivity
Immunofluorescence quantification:
Use confocal microscopy with consistent acquisition parameters
Implement Z-stack imaging for total signal integration
Apply appropriate thresholding and measure total fluorescence intensity
Normalize to cell number or tissue area
These quantitative approaches build on established principles for protein quantification that have been successfully applied to other proteins in plant systems .
For robust normalization and analysis of CYP71B25 expression data, implement these statistically sound approaches:
Western blot normalization strategies:
Use multiple housekeeping proteins as loading controls
Consider tissue-specific reference proteins rather than global housekeeping genes
Implement total protein normalization using stain-free gels or Ponceau S staining
Calculate relative expression using the 2^-ΔΔCt method adapted for protein data
Statistical analysis framework:
| Data Type | Recommended Tests | Assumptions | Sample Size Requirements |
|---|---|---|---|
| Single-point comparison | t-test or Mann-Whitney | Normality or non-parametric | n ≥ 3 biological replicates |
| Multiple conditions | ANOVA with post-hoc tests | Equal variance | n ≥ 4 per condition |
| Time-course data | Repeated measures ANOVA | Sphericity | n ≥ 5 time points |
| Correlation analysis | Pearson or Spearman | Linearity or monotonicity | n ≥ 10 paired observations |
Multi-omics data integration:
Correlate protein levels with transcript abundance
Integrate with metabolomics data to link enzyme levels with product formation
Apply principal component analysis to identify key variables
Develop pathway models incorporating protein expression data
Visualization best practices:
Present normalized data with appropriate error bars (SD for descriptive, SEM for inferential statistics)
Include scatter plots of individual replicates along with means
Use consistent scales when comparing across experiments
Provide clear statistical significance indicators
These normalization and analysis approaches follow established principles for quantitative protein expression analysis in plant systems .
Several cutting-edge technologies show promise for revolutionizing CYP71B25 antibody development:
Computational antibody design:
Synthetic antibody libraries:
Phage display platforms with plant-optimized synthetic antibody libraries
Yeast display for high-throughput screening of CYP71B25-specific binders
Ribosome display for completely in vitro selection of high-affinity antibodies
Single-cell antibody discovery:
Isolation of B cells from immunized animals using CYP71B25-specific baits
Single-cell transcriptomics to recover paired heavy and light chain sequences
Rapid cloning and expression of recombinant antibodies
Novel antibody formats:
Single-domain antibodies (nanobodies) for improved access to cryptic epitopes
Bispecific antibodies targeting two distinct CYP71B25 epitopes
Smaller antibody fragments with enhanced tissue penetration for in planta imaging
These approaches build on emerging technologies in the antibody development field, with particular relevance to plant protein detection systems .
CRISPR/Cas9 technologies offer powerful complementary approaches to CYP71B25 antibody-based research:
Validation tools:
Generate precise CYP71B25 knockout lines for antibody validation
Create epitope-tagged CYP71B25 knockin lines to confirm antibody specificity
Develop tissue-specific or inducible knockouts to study temporal dynamics
Functional studies:
Engineer domain-specific mutations to correlate with epitope recognition patterns
Create catalytically inactive CYP71B25 variants while maintaining protein expression
Generate post-translational modification site mutants to study regulatory mechanisms
Protein interaction analysis:
Implement CRISPR-based proximity labeling (e.g., APEX2 fusions)
Engineer split-protein complementation systems for in vivo interaction studies
Create fluorescent protein fusions to complement antibody localization studies
Systems biology applications:
Perform CRISPR screens to identify regulators of CYP71B25 expression
Create libraries of CYP71B25 variants for structure-function analysis
Develop reporter lines to correlate protein expression with metabolic output
This integration of CRISPR/Cas9 with antibody-based approaches provides complementary tools for comprehensive protein analysis, building on established methodologies for studying protein function .
Exploring CYP71B25 function across diverse plant species presents exciting research opportunities:
Cross-species antibody development:
Heterologous expression systems:
Express CYP71B25 orthologs from non-model species in yeast or tobacco
Purify proteins for antibody generation and biochemical characterization
Compare enzyme properties across evolutionary diverse plant species
Metabolic profiling:
Correlate CYP71B25 expression with specialized metabolite profiles across species
Identify novel biosynthetic pathways in non-model plants
Map evolutionary diversification of enzyme function
Ecological function studies:
Investigate CYP71B25 roles in plant-herbivore and plant-pathogen interactions
Study enzyme expression during environmental stress responses
Examine adaptive evolution of CYP71B25 function in different ecological niches
These approaches build on established methodologies for cross-species protein analysis, adapted specifically for plant cytochrome P450 enzymes and their roles in specialized metabolism .
Systems biology offers powerful frameworks for integrating CYP71B25 antibody-derived data:
Multi-omics data integration:
Pathway modeling:
Incorporate enzyme abundance data into kinetic models of metabolic pathways
Predict metabolic flux based on CYP71B25 protein levels
Simulate effects of environmental perturbations on pathway output
Network analysis:
Map CYP71B25 to larger regulatory networks using protein-protein interaction data
Identify hub proteins and regulatory motifs affecting CYP71B25 function
Discover emergent properties not evident from reductionist approaches
Machine learning applications:
Train predictive models using antibody-derived protein localization and abundance data
Develop classification algorithms for plant stress responses based on CYP71B25 dynamics
Identify novel patterns in complex datasets through unsupervised learning approaches
These systems biology approaches build on established methodologies for integrating diverse biological data types, with particular relevance to enzyme function in plant metabolic networks .
Advanced computational tools are transforming CYP71B25 epitope prediction and antibody development:
Structure-based epitope prediction:
Machine learning approaches:
Deep learning algorithms trained on antibody-epitope interaction databases
Feature extraction from protein sequences for epitope prediction
Ensemble methods combining sequence and structural predictions
Immunogenicity prediction:
Algorithms to identify epitopes likely to elicit strong immune responses
Prediction of cross-reactivity with related CYP family members
Tools to design immunogens with optimal presentation of target epitopes
Antibody design platforms:
These computational approaches are revolutionizing antibody development, as demonstrated in recent studies where computationally designed cyclic peptides derived from antibody loops showed comparable binding affinities to full-length antibodies .