MAK3 (Mitogen-Activated Protein Kinase-Activated Protein Kinase 3) is a synonym for the N-alpha-acetyltransferase 50 (NAA50) enzyme encoded by the NAA50 gene. This protein belongs to the NatE catalytic subunit family and facilitates N-terminal acetylation of proteins retaining their initiating methionine . Key features include:
| Property | Detail |
|---|---|
| Gene Symbol | NAA30 (MAK3) |
| Protein Mass | 19.4 kDa (canonical isoform) |
| Isoforms | 2 identified variants |
| Cellular Localization | Nucleus and cytoplasm |
| UniProt ID | Q147X3 |
MAK3 antibodies are typically rabbit polyclonal antibodies raised against recombinant MAK3 peptides. For example, Novus Biologicals’ MAK3 antibody (NBP2-31696) targets amino acids 1–84 of the human MAK3 protein . Antibodies are validated for:
Technical validation includes specificity confirmation via protein arrays containing MAK3 and 383 non-target proteins .
MAK3 antibodies enable diverse experimental workflows:
Protein Localization Studies: MAK3’s nuclear/cytoplasmic distribution has been mapped in human heart tissue lysates .
Functional Analysis: Investigating MAK3’s role in acetylating metabolic enzymes and chromatin regulators .
Disease Research: Linked to cancer progression due to dysregulated acetylation pathways .
MAK3 acetylates N-terminal methionine residues, influencing protein stability and interactions .
Knockdown studies associate MAK3 with impaired cell proliferation and migration in vitro .
Representative validation data from peer-reviewed studies:
Current MAK3 antibodies lack isoform-specific validation, complicating studies of splice variants . Emerging techniques like Rep-Seq analysis platforms (e.g., RAPID) and microfluidics-enabled antibody discovery may enable next-generation MAK3 tools with single-cell resolution.
KEGG: sce:YPR051W
STRING: 4932.YPR051W
MAK3 Antibody is a rabbit polyclonal antibody specifically designed to detect MAK3 (also known as NAA30, N-alpha-acetyltransferase 30, or NatC catalytic subunit) in human samples. This antibody has been validated for Western Blot and Immunohistochemistry applications .
The target protein NAA30 functions as the catalytic subunit of the N-terminal acetyltransferase C (NatC) complex, which is responsible for N-terminal protein acetylation, a common post-translational modification. NAA30 has a molecular weight of approximately 39 kDa and plays an important role in cellular protein regulation .
The antibody is generated using synthetic peptides corresponding to the middle region of NAT12 (NP_001011713) with the peptide sequence: EQVRLLSSSLTADCSLRSPSGREVEPGEDRTIRYVRYESELQMPDIMRLI . This region was specifically selected to maximize antibody specificity and minimize cross-reactivity with other proteins.
Based on the available research data, MAK3 Antibody has been validated for the following applications:
When using this antibody for research purposes, it is critical to understand that validation for specific applications determines its reliability in experimental settings. The antibody has been used in at least two published studies, suggesting peer-reviewed validation of its performance .
MAK3 Antibody demonstrates reactivity with samples from multiple species:
| Species | Expected Identity Based on Immunogen Sequence |
|---|---|
| Human | 100% |
| Bovine | 100% |
| Mouse | 90% |
| Rat | 90% |
Additionally, the antibody is expected to react with samples from pig, canine, equine, and rabbit sources . When conducting cross-species experiments, preliminary validation is recommended as reactivity can vary based on epitope conservation and experimental conditions.
Proper storage and preparation of MAK3 Antibody is essential for maintaining its performance over time:
Storage recommendations:
Preparation protocol:
Centrifuge the vial of lyophilized antibody at 12,000 × g for 20 seconds
Add 50 μL of distilled water
Vortex thoroughly
Centrifuge again to pellet the solution
It is crucial to avoid repeated freeze-thaw cycles, as these can significantly degrade antibody quality and reduce experimental reproducibility. Researchers should prepare small aliquots for regular use to preserve the stock solution.
Optimizing Western Blot protocols with MAK3 Antibody requires attention to several critical parameters:
Sample preparation considerations:
Use fresh samples when possible
Include appropriate protease inhibitors during extraction
Determine optimal protein loading (typically 10-30 μg of total protein)
Ensure complete denaturation with appropriate SDS-PAGE conditions
Antibody incubation optimization:
Consider titrating the antibody (0.5-2.0 μg/ml) to determine optimal signal-to-noise ratio
Incubation temperature: typically 4°C overnight or room temperature for 1-2 hours
Blocking agents: test BSA vs. non-fat dry milk to determine which minimizes background
Detection system selection:
Choose a detection system compatible with rabbit IgG primary antibodies
Consider signal amplification methods for low-abundance targets
Exposure time optimization: multiple exposures recommended to prevent signal saturation
It's important to note that antibody performance can vary between batches, so researchers should validate each new lot. This is particularly relevant for polyclonal antibodies like MAK3, where batch-to-batch variability may affect experimental outcomes .
Thorough validation of MAK3 Antibody specificity is essential for reliable research outcomes. Researchers should implement multiple approaches:
Positive and negative controls:
Positive controls: Samples with confirmed NAA30 expression (e.g., cell lines with known expression levels)
Negative controls:
Molecular weight verification:
Confirm observed band molecular weight matches expected 39 kDa
Run molecular weight ladder alongside samples
Investigate additional bands if present (potential isoforms or degradation products)
Orthogonal techniques:
Compare results across different detection methods (e.g., Western blot vs. immunohistochemistry)
Verify with recombinant expression systems
Consider using alternative antibodies targeting different epitopes of NAA30
Proper validation is critical as antibody specificity directly impacts data interpretation. The scientific community increasingly emphasizes the importance of antibody validation in ensuring experimental reproducibility .
Cross-reactivity can significantly impact experimental results. Researchers can implement several methodological approaches to address this concern:
Epitope analysis and prediction:
Review the immunogen sequence (EQVRLLSSSLTADCSLRSPSGREVEPGEDRTIRYVRYESELQMPDIMRLI) for homology with other proteins
Use bioinformatic tools to predict potential cross-reactive proteins
Consider performing BLAST analysis against proteome databases
Experimental verification:
Immunoprecipitation followed by mass spectrometry to identify all proteins captured
Competitive binding assays with purified proteins
Side-by-side comparison with antibodies targeting different epitopes
Specificity enhancement strategies:
Affinity purification against the immunizing peptide
Pre-absorption with proteins showing potential cross-reactivity
Optimization of washing conditions to reduce non-specific binding
The sequence homology of NAA30 across species has important implications for experimental design:
Homology analysis impact:
Human and bovine samples: Expected 100% identity with immunogen sequence
Mouse and rat samples: Expected 90% identity with immunogen sequence
Other species (pig, canine, equine, rabbit): Reactivity predicted but requires validation
Experimental design considerations:
For human studies: Direct application with high confidence
For rodent studies: Validation necessary due to 10% sequence divergence
For cross-species comparisons: Preliminary verification of equivalent epitope recognition
Validation approaches for cross-species experiments:
Western blot comparison across species with equal protein loading
Peptide competition assays with species-specific peptides
Epitope mapping to identify regions of conservation and divergence
When encountering challenges with Western Blot experiments using MAK3 Antibody, consider these targeted troubleshooting strategies:
Weak or no signal issues:
Increase antibody concentration (start with 1.0 μg/ml, then gradually increase if needed)
Extend primary antibody incubation time (4°C overnight)
Enhance protein loading (30-50 μg total protein)
Verify sample integrity with housekeeping protein detection
Use more sensitive detection systems (e.g., enhanced chemiluminescence)
High background issues:
Optimize blocking conditions (test 5% BSA vs. 5% non-fat dry milk)
Increase washing duration and frequency
Decrease antibody concentration
Filter antibody solution before use
Use freshly prepared buffers
Multiple or unexpected bands:
Optimize sample preparation (add phosphatase and protease inhibitors)
Reduce protein loading to minimize non-specific binding
Verify bands with positive and negative controls
Consider pre-absorbing antibody with non-specific proteins
Test different reducing conditions
When interpreting results, remember that polyclonal antibodies may recognize multiple epitopes on the target protein, potentially resulting in several bands representing different protein states or isoforms .
Researchers frequently encounter discrepancies between different detection methods. A systematic approach to resolving conflicting results includes:
Methodological reconciliation strategy:
Verify antibody specificity in both methods
Compare sensitivities of different detection techniques
Evaluate whether each method detects different protein states or modifications
Consider differences in sample preparation between methods
Assess technical limitations of each approach
Advanced verification approaches:
Use genetic approaches (siRNA knockdown or CRISPR knockout) to verify specificity
Implement orthogonal techniques (e.g., mass spectrometry)
Test alternative antibodies targeting different epitopes
Perform epitope mapping to understand detection discrepancies
Compare results with transcriptional analysis (RT-PCR or RNA-seq)
Interpretation framework:
Different antibodies may recognize different protein conformations or post-translational modifications
Consider the biological context (cell type, treatment conditions)
Evaluate subcellular localization differences that might affect detection
Document all experimental variables to identify potential sources of variation
Scientific literature increasingly emphasizes the importance of using multiple detection methods to build confidence in research findings . Discrepancies should be viewed as opportunities to gain deeper insights into protein biology rather than simply experimental failures.
Multiplex immunoassays represent an advanced application for MAK3 Antibody, enabling researchers to study NAA30 in complex protein interaction networks:
Integration strategies:
Antibody conjugation options:
Fluorescent labels (ensure spectral compatibility with other antibodies)
Biotin labeling for streptavidin-based detection systems
Bead-based assay integration
Multiplexing considerations:
Validate antibody performance post-conjugation
Perform single-antibody controls alongside multiplex experiments
Test for cross-reactivity between multiplex components
Optimize antibody concentrations individually before combining
Advanced applications:
Co-immunoprecipitation to identify NAA30 binding partners
Proximity ligation assays to visualize protein-protein interactions in situ
ChIP-seq for identifying genomic binding sites (if applicable)
Tissue microarray analysis for high-throughput screening
When designing multiplex experiments, researchers should consider the rabbit IgG isotype of MAK3 Antibody to ensure compatibility with other primary antibodies and detection systems. This approach allows researchers to study complex biological systems while maintaining experimental rigor.
Quantitative protein expression analysis using MAK3 Antibody requires careful attention to several critical factors:
Sample preparation standardization:
Consistent extraction methods across all experimental conditions
Protein quantification with reliable methods (BCA or Bradford assays)
Sample storage and handling protocols that preserve protein integrity
Quantification methodology options:
Western blot densitometry:
Use appropriate reference proteins (GAPDH, β-actin)
Ensure detection is within linear range
Apply validated normalization methods
ELISA development considerations:
Standard curve generation with recombinant protein
Spike-in recovery experiments to validate accuracy
Inter- and intra-assay variability assessment
Analytical considerations:
Statistical approaches for comparing expression levels
Technical replicates (minimum n=3) to assess reproducibility
Biological replicates to account for natural variation
Appropriate positive and negative controls
Researchers should be aware that the affinity-purified nature of this antibody makes it suitable for quantitative applications, but batch-to-batch variations may necessitate standardization between experiments for longitudinal studies.
The polyclonal nature of MAK3 Antibody has significant implications for research applications:
Comparative advantages of polyclonal MAK3 Antibody:
Recognition of multiple epitopes increases detection sensitivity
Greater robustness against minor conformational changes in target protein
Potentially better performance in certain applications like immunohistochemistry
Often works well across multiple species due to recognition of conserved epitopes
Limitations relative to monoclonal antibodies:
Batch-to-batch variability requires consistent validation
Potential for higher background due to diverse antibody population
Less specificity for distinguishing closely related proteins
May recognize post-translational modifications inconsistently
Application-specific considerations:
Western blot: Polyclonal antibodies may detect multiple bands (isoforms, degradation products)
Immunoprecipitation: Higher sensitivity but potentially lower specificity
Flow cytometry: May require more stringent gating strategies
Immunohistochemistry: Often provides stronger signal but requires careful validation
Recent research has demonstrated that the human immune system can generate up to one quintillion unique antibodies , highlighting the complexity and diversity of polyclonal responses. Understanding these dynamics helps researchers interpret results obtained with polyclonal antibodies like MAK3.
Artificial intelligence technologies are poised to transform antibody research, with several potential applications for MAK3 Antibody:
AI-enhanced antibody characterization:
Epitope mapping through computational prediction algorithms
Structure-function relationship modeling
Cross-reactivity prediction across species and proteins
Binding affinity estimation through machine learning approaches
Advanced experimental design:
Optimization of experimental conditions through predictive modeling
Automated image analysis for immunohistochemistry results
Pattern recognition in complex datasets
Predictive analytics for experimental outcomes
Future development potential:
Design of improved versions with enhanced specificity
Creation of synthetic antibodies based on binding characteristics
Integration with large-scale antibody-antigen databases
AI-driven epitope selection for next-generation antibodies
Recent developments at Vanderbilt University Medical Center demonstrate the potential of AI in antibody research, with their $30 million ARPA-H funded project aimed at using artificial intelligence technologies to generate antibody therapies against any antigen target of interest . This technology could potentially be applied to develop improved versions of antibodies like MAK3 with enhanced specificity and reduced batch-to-batch variability.
MAK3 Antibody targets NAA30, a key component of the N-terminal acetyltransferase C complex, positioning it as a valuable tool for investigating protein acetylation in disease:
Research applications in disease mechanisms:
Profiling NAA30 expression across normal and pathological tissues
Investigating role of N-terminal acetylation in protein stability and function
Correlating NAA30 levels with disease progression or treatment response
Studying NAA30 interactions with disease-relevant proteins
Methodological approaches:
Tissue microarray analysis of patient samples
Cell-based models of disease with NAA30 manipulation
Animal models with altered NAA30 expression
Correlation of acetylation patterns with clinical outcomes
Translational potential:
Biomarker development for diseases with altered acetylation profiles
Target validation for therapeutic development
Patient stratification based on NAA30 expression patterns
Companion diagnostics for treatments affecting protein acetylation
As our understanding of protein post-translational modifications in disease continues to evolve, antibodies like MAK3 that target key regulatory enzymes will be essential research tools. The continued refinement of antibody reporting and validation standards will further enhance the reliability of such research .
Rigorous quality control is essential for ensuring reliable results with MAK3 Antibody:
Pre-experimental validation:
Confirmation of reactivity with positive control samples
Assessment of lot-to-lot consistency
Verification of antibody concentration and activity
Testing for contamination or degradation
Application-specific quality metrics:
Western blot:
Immunohistochemistry:
Staining pattern consistency
Background levels
Cellular localization specificity
Comparison with literature-reported patterns
Documentation requirements:
Detailed recording of antibody source, catalog number (Bio-Techne NBP1-70631)
Lot number and validation date
Experimental conditions (concentration, incubation times)
Complete protocol documentation for reproducibility
The scientific community increasingly emphasizes proper antibody reporting to enhance experimental reproducibility . Researchers should maintain detailed records of antibody performance across experiments to identify any variations that might affect results.
Batch-to-batch variability represents a significant challenge for longitudinal studies using polyclonal antibodies like MAK3:
Proactive management strategies:
Purchase sufficient quantities of a single lot for entire study when possible
Perform side-by-side validation of new batches with original lot
Maintain internal reference standards for normalization
Document lot numbers used for each experiment
Comparative validation protocol:
Run parallel Western blots with old and new antibody lots
Compare staining patterns in immunohistochemistry
Quantify signal intensity differences
Assess background levels across batches
Develop correction factors if necessary
Experimental design adaptations:
Include consistent positive controls across all experiments
Consider using pooled samples as internal standards
Implement technical replicates to distinguish batch effects from biological variation
Use statistical methods that account for batch effects in data analysis
Proper reporting of antibody information, including lot numbers and validation data, is essential for research reproducibility . When significant batch variations are observed, researchers should consider this limitation when interpreting results and explicitly acknowledge it in publications.
Optimizing sample preparation is crucial for successful experiments with MAK3 Antibody across different applications:
Western Blot sample preparation:
Lysis buffer composition: RIPA buffer with protease inhibitors
Sample processing: Sonication or needle homogenization to ensure complete lysis
Storage conditions: Aliquot and store at -80°C to avoid freeze-thaw cycles
Protein quantification: BCA or Bradford assay for accurate loading
Denaturation conditions: 95°C for 5 minutes in Laemmli buffer with β-mercaptoethanol
Immunohistochemistry sample preparation:
Fixation method: 10% neutral buffered formalin (24-48 hours)
Processing protocol: Standard paraffin embedding
Section thickness: 4-5 μm sections
Antigen retrieval: Heat-induced epitope retrieval (citrate buffer pH 6.0)
Blocking conditions: 5% normal goat serum to reduce background
General considerations across applications:
Include phosphatase inhibitors if phosphorylation status is relevant
Minimize freeze-thaw cycles of samples
Standardize preparation protocols across experimental groups
Process all experimental conditions in parallel when possible
Validate each preparation method with positive control samples
Careful documentation of sample preparation protocols is essential for experimental reproducibility, particularly when using antibodies like MAK3 where performance may vary with sample preparation conditions .
Comprehensive protein characterization requires integration of antibody-based detection with complementary molecular techniques:
Multi-omics integration strategy:
Correlate protein detection with transcriptomic data (RNA-seq, qPCR)
Combine with mass spectrometry for post-translational modification analysis
Integrate with functional assays to correlate expression with activity
Complement with structural biology techniques for mechanistic insights
Integrated experimental design:
Parallel sample processing for different analytical platforms
Consistent experimental conditions across techniques
Time-course analyses to capture dynamic processes
Careful sample tracking to ensure proper data integration
Data integration approaches:
Correlation analysis between protein levels and mRNA expression
Pathway analysis incorporating multiple data types
Network modeling to identify functional relationships
Machine learning approaches for pattern recognition across datasets
This integrated approach aligns with the evolving understanding of antibody repertoires, where researchers have discovered that the human body can generate up to one quintillion unique antibodies , highlighting the complexity of protein-antibody interactions and the need for multiple analytical approaches.
Proper reporting of antibody information is crucial for research reproducibility. When publishing research using MAK3 Antibody, include:
Critical antibody information:
Complete product identification: MAK3 Antibody, Novus Biologicals, Catalog #NBP1-70631, RRID (if available)
Immunogen details: Synthetic peptide EQVRLLSSSLTADCSLRSPSGREVEPGEDRTIRYVRYESELQMPDIMRLI
Lot number and manufacturing date
Experimental methodology details:
Specific application used (Western blot, immunohistochemistry)
Working concentration employed (e.g., 1.0 μg/ml for Western blot)
Complete protocols including blocking, incubation, and washing conditions
Detection systems and imaging parameters
Positive and negative controls utilized
Validation information:
Specificity validation approach
Quantification methods if applicable
Replication strategy (technical and biological)
Limitations observed during experiments
The importance of proper antibody reporting has been increasingly emphasized in scientific literature to address reproducibility challenges . Journal editors and reviewers now frequently require detailed antibody information as part of manuscript submission requirements.
Enhancing research reproducibility requires attention to several key factors:
Experimental design considerations:
Implement rigorous controls (positive, negative, isotype)
Include adequate biological and technical replicates
Blind analysis where appropriate
Pre-register experimental protocols when possible
Use statistical power calculations to determine sample sizes
Detailed methodology documentation:
Provide step-by-step protocols with sufficient detail for replication
Include buffer compositions and preparation methods
Document antibody validation procedure
Report batch/lot information
Share raw data and analysis scripts when possible
Transparency in limitations:
Acknowledge technical challenges encountered
Discuss potential alternative interpretations
Note experimental conditions where antibody performance varied
Address discrepancies with previous literature
Indicate batch-to-batch variability if observed
The scientific community's understanding of antibody specificity has evolved significantly, with research showing that people share an average of only 0.95% antibody clonotypes, highlighting the complexity of antibody-antigen interactions and the importance of robust validation .