ChlADR1 Antibody

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Description

Introduction to ChlADR1

ChlADR1 (Chloroplastic Aldehyde Dehydrogenase/Reductase 1) is a plant-derived enzyme encoded by the At1g54870 gene in Arabidopsis thaliana. It functions as an aldehyde reductase, catalyzing the reduction of reactive carbonyl groups in saturated and α,β-unsaturated aldehydes (≥5 carbons) within chloroplasts . This enzyme plays a critical role in detoxifying lipid peroxidation byproducts and maintaining photosynthetic efficiency by mitigating oxidative stress .

Functional Role of ChlADR1

ChlADR1 is localized to chloroplasts via its N-terminal targeting sequence . Key enzymatic activities include:

  • Substrate Specificity: Reduces aldehydes such as cis-3-hexenal (a green leaf volatile) and methylglyoxal .

  • Physiological Impact: Protects chloroplasts from reactive carbonyl species generated during lipid peroxidation, thereby preserving photosynthetic machinery .

Table 1: Key Biochemical Properties of ChlADR1

PropertyDetail
Gene IDAt1g54870 (Arabidopsis thaliana)
Enzyme ClassAldo-keto reductase (AKR)
SubstratesSaturated/α,β-unsaturated aldehydes (e.g., methylglyoxal, hexenals)
LocalizationChloroplast
Pathway InvolvementLipid peroxidation detoxification, methylglyoxal degradation

Antibody Development and Applications

While the term "ChlADR1 Antibody" is not explicitly referenced in published literature, antibodies targeting the At1g54870-encoded protein have been utilized in research to study its expression and function. For example:

  • Recombinant Protein Tools: Polyclonal and monoclonal antibodies against ChlADR1’s recombinant form are used in Western blotting and immunolocalization to confirm chloroplast-specific expression .

  • Functional Studies: These antibodies enable the identification of ChlADR1’s role in stress responses, particularly under conditions that induce lipid peroxidation (e.g., drought, high light) .

Role in Stress Adaptation

ChlADR1 is upregulated under oxidative stress, where it mitigates cytotoxic aldehyde accumulation. Studies demonstrate that Arabidopsis mutants lacking ChlADR1 exhibit heightened sensitivity to photooxidative damage .

Interaction with Metabolic Pathways

ChlADR1 intersects with pathways such as:

  • Methylglyoxal Detoxification: Converts methylglyoxal (a glycolysis byproduct) into less reactive metabolites .

  • Volatile Organic Compound (VOC) Biosynthesis: Processes cis-3-hexenal, a precursor to plant defense-related VOCs .

Future Directions

Further research is needed to:

  • Characterize ChlADR1’s structural determinants for substrate binding.

  • Explore its potential in engineering stress-tolerant crops.

  • Develop high-affinity monoclonal antibodies for precise functional assays.

Product Specs

Buffer
Preservative: 0.03% ProClin 300; Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
14-16 Weeks (Made-to-Order)
Synonyms
ChlADR1 antibody; At1g54870 antibody; F14C21_16 antibody; T24C10.1NADPH-dependent aldehyde reductase 1 antibody; chloroplastic antibody; AtChlADR1 antibody; EC 1.1.1.- antibody; Glucose and ribitol dehydrogenase homolog 1 antibody
Target Names
ChlADR1
Uniprot No.

Target Background

Function
ChlADR1 is an aldehyde reductase enzyme that catalyzes the reduction of saturated and α,β-unsaturated aldehydes containing more than five carbons. It exhibits no activity on α,β-unsaturated ketones. Substrates include propionaldehyde, butyraldehyde, methylglyoxal, (E)-2-pentenal, (E)-2-hexenal, (Z)-3-hexenal, and (E)-2-nonenal; however, it does not utilize propenal (acrolein), crotonaldehyde, 2-butanone, 3-buten-2-one, or 1-penten-3-one. ChlADR1 may function as a short-chain alcohol-polyol-sugar dehydrogenase, potentially involved in carbohydrate metabolism and the development of desiccation tolerance. A role in signal transduction is also possible.
Database Links

KEGG: ath:AT1G54870

STRING: 3702.AT1G54870.1

UniGene: At.16081

Protein Families
Short-chain dehydrogenases/reductases (SDR) family
Subcellular Location
Plastid, chloroplast.

Q&A

What are the essential validation steps for confirming ChlADR1 Antibody specificity?

Comprehensive antibody validation requires documenting four critical aspects: (1) confirmation that the antibody binds to the target protein, (2) verification that binding occurs in complex protein mixtures (e.g., cell lysates or tissue sections), (3) demonstration that the antibody doesn't cross-react with non-target proteins, and (4) confirmation that the antibody performs as expected under specific experimental conditions . For ChlADR1 Antibody, validation should include:

  • ELISA against purified recombinant protein: To confirm direct binding to the target

  • Western blot analysis: To verify binding specificity in complex mixtures

  • Testing in knockout/knockdown systems: To eliminate false positives

  • Performance verification in intended applications: To ensure functionality in specific experimental contexts

Ideally, validation should involve screening numerous clones (approximately 1,000) using parallel ELISAs against both purified protein and cells expressing the target, followed by application-specific testing .

How should I select appropriate positive and negative controls for ChlADR1 Antibody experiments?

Proper control selection is essential for meaningful antibody-based experiments:

Positive Controls:

  • Cell lines or tissues known to express the target protein at detectable levels

  • Recombinant expression systems overexpressing the target

  • Purified target protein for direct binding assays

Negative Controls:

  • Knockout or knockdown systems where the target has been eliminated

  • Cell lines that naturally lack target expression

  • Secondary antibody-only controls to detect non-specific binding

  • Isotype controls to identify Fc receptor binding

Antibody characterization laboratories, like the Neuromab facility, have demonstrated that parallel testing against both the immunogen and cells expressing the target significantly increases the likelihood of identifying truly specific antibodies .

What analytical methods are most suitable for characterizing ChlADR1 Antibody performance?

The analytical toolkit for antibody characterization should include:

MethodApplicationKey Information Provided
ELISAPrimary screeningDirect binding to target
Western blotSpecificity validationSize-based confirmation of target binding
ImmunohistochemistryTissue localizationSpatial distribution of target
ImmunoprecipitationProtein complexesAbility to isolate native protein
Flow cytometryCell surface targetsQuantitative binding analysis

For complete characterization, the antibody should be tested in all intended applications. As demonstrated in antibody development programs, ELISA positivity alone is a poor predictor of performance in other assays, necessitating comprehensive multi-assay validation .

How can I address inconsistent ChlADR1 Antibody performance across experiments?

Inconsistent antibody performance often stems from several factors:

  • Buffer composition variations: Document and standardize buffer components, pH, and ionic strength

  • Protein denaturation effects: For conformation-sensitive antibodies, maintain consistent sample preparation

  • Lot-to-lot variability: Validate each new antibody lot against previous standards

  • Storage and handling conditions: Maintain consistent storage protocols and avoid freeze-thaw cycles

Implement Design of Experiments (DOE) methodology to systematically assess multiple factors simultaneously while minimizing the number of experiments needed . This approach allows for identifying critical parameters affecting antibody performance and establishing a "design space" of safe operating conditions.

What strategies can improve ChlADR1 Antibody signal-to-noise ratio in complex samples?

Optimizing signal-to-noise ratio requires methodical approach:

  • Titration experiments: Determine the minimum antibody concentration providing maximum specific signal

  • Blocking optimization: Test different blocking agents (BSA, milk, normal serum) for lowest background

  • Sample preparation refinement: Test multiple extraction protocols to maximize target accessibility

  • Signal amplification methods: Consider tyramide signal amplification or polymer detection systems for low-abundance targets

  • Pre-adsorption against non-specific proteins: Remove antibodies that bind to common background proteins

Document the effects of each optimization step through quantitative image analysis or signal measurement to establish reproducible protocols .

How should I validate ChlADR1 Antibody for cross-species reactivity?

Cross-species validation requires systematic testing and sequence analysis:

  • Perform sequence alignment of the immunogen region across target species

  • Test antibody reactivity against recombinant protein from each species

  • Validate in tissue/cells from each species with appropriate controls

  • Perform peptide competition assays to confirm epitope specificity

When validating across species, remember that antibody performance may vary significantly even with high sequence homology. Functional validation in each species is essential rather than assumption of cross-reactivity based on sequence alone .

How can I effectively use ChlADR1 Antibody for chromatin immunoprecipitation (ChIP) experiments?

ChIP applications require specialized validation and optimization:

  • Fixation optimization: Test multiple cross-linking conditions (formaldehyde concentration and time)

  • Sonication parameters: Optimize chromatin fragmentation for consistent fragment sizes

  • IP conditions: Determine optimal antibody-to-chromatin ratio and incubation parameters

  • Washing stringency: Balance removal of non-specific binding with preservation of specific interactions

  • Positive control regions: Include genomic regions known to bind the target protein

For chromatin-associated proteins like CHD family members, which include chromodomain, helicase domain, and DNA-binding domain proteins similar in structure, epitope accessibility in the cross-linked chromatin environment is particularly critical . Validate the antibody specifically for ChIP applications rather than assuming Western blot performance will translate to ChIP success.

What considerations are important when using ChlADR1 Antibody for quantitative analyses?

Quantitative applications require additional validation parameters:

  • Linear dynamic range: Establish the concentration range where signal increases proportionally with protein amount

  • Standardization: Develop calibration curves using purified protein standards

  • Signal saturation: Identify and avoid conditions where signal plateaus despite increasing target

  • Reference standards: Include consistent positive controls across experiments for normalization

  • Technical replication: Assess variability between technical replicates to establish precision

For quantitative applications, monoclonal antibodies generally provide more consistent results than polyclonal antibodies due to their defined epitope specificity and reduced batch-to-batch variation .

What are the critical factors for using ChlADR1 Antibody in multiplexed imaging or flow cytometry?

Multiplexing considerations include:

  • Spectral compatibility: Select fluorophore combinations with minimal spectral overlap

  • Epitope accessibility: Ensure antibody combinations don't compete for spatially adjacent epitopes

  • Species compatibility: Use primary antibodies from different host species to allow specific secondary detection

  • Sequential detection protocols: Develop order-specific staining when using multiple antibodies from the same species

  • Controls for each channel: Include single-stain controls for proper compensation/unmixing

How should I design experiments to distinguish between specific and non-specific binding of ChlADR1 Antibody?

Rigorous experimental design requires:

  • Knockout/knockdown controls: Generate systems where the target protein is absent/reduced

  • Peptide competition: Pre-incubate antibody with immunizing peptide to block specific binding

  • Multiple antibodies targeting different epitopes: Compare localization/binding patterns

  • Correlation with orthogonal methods: Validate findings using non-antibody methods (e.g., mass spectrometry)

  • Signal quantification: Apply statistical analysis to distinguish signal from background

Research from antibody characterization initiatives shows that antibodies passing initial ELISA screens frequently fail in more complex applications, highlighting the need for application-specific validation in conditions matching experimental use .

What statistical approaches are appropriate for analyzing ChlADR1 Antibody-based experimental data?

Statistical analysis should address:

  • Biological vs. technical replication: Design experiments with sufficient biological replicates (typically ≥3)

  • Normalization methods: Select appropriate reference standards for consistent comparisons

  • Outlier identification: Establish criteria for excluding aberrant measurements

  • Statistical tests: Apply appropriate tests based on data distribution (parametric vs. non-parametric)

  • Multiple testing correction: Adjust significance thresholds when performing multiple comparisons

Statistical analysis should be planned during experimental design rather than retrospectively. Power analysis can help determine appropriate sample sizes to detect biologically meaningful differences .

How can I integrate ChlADR1 Antibody data with other molecular techniques for comprehensive analysis?

Integrative approaches should consider:

  • Complementary techniques: Pair antibody-based methods with orthogonal approaches (RNA-seq, mass spectrometry)

  • Temporal relationships: Correlate protein detection with transcriptional/translational dynamics

  • Spatial context: Combine localization data with interaction analyses

  • Functional validation: Connect antibody-detected patterns with functional assays

  • Data integration pipelines: Develop computational methods to analyze multi-modal datasets

Effective integration requires understanding the limitations of each technique and accounting for these in interpretation. While antibodies provide spatial and contextual information, complementary techniques can validate specificity and provide functional insights .

What information should be included when reporting ChlADR1 Antibody-based experimental results?

Comprehensive reporting should include:

  • Antibody details: Source, catalog number, lot number, RRID (Research Resource Identifier)

  • Validation evidence: Description of controls and specificity tests performed

  • Experimental conditions: Detailed protocols including buffer compositions, incubation times/temperatures

  • Image acquisition parameters: Microscope settings, exposure times, processing methods

  • Quantification methods: Analysis pipelines, software, parameters, and statistical approaches

The lack of sufficient reporting has contributed to the "antibody characterization crisis," with many scientific papers relying on inadequately characterized antibodies. Including comprehensive methods details is essential for reproducibility .

How can I ensure reproducibility of ChlADR1 Antibody-based experiments across different laboratories?

Reproducibility strategies include:

  • Protocol standardization: Develop detailed, step-by-step protocols that explicitly state all variables

  • Reference material sharing: Distribute consistent positive controls across laboratories

  • Blind validation: Have independent laboratories perform key experiments without knowledge of expected results

  • Digital data preservation: Maintain raw, unprocessed data alongside analysis results

  • Inter-laboratory validation studies: Systematically compare results across multiple sites

Careful documentation of lot numbers and periodic revalidation is critical, as antibody performance can vary significantly between batches even from the same vendor .

What resources are available for accessing validated ChlADR1 Antibody data from previous studies?

Several resources have been developed to address antibody reliability:

  • Research Resource Identifiers (RRIDs): Unique identifiers that allow tracking of specific antibodies across studies

  • Antibody validation databases: Repositories containing validation data for specific antibodies

  • Laboratory-specific validation protocols: Documented methods for antibody characterization

  • Institutional repositories: Collections of validated antibodies maintained by research institutions

  • Open science initiatives: Platforms sharing raw data from antibody-based experiments

The scientific community has developed several resources to address the antibody reproducibility crisis, including specialized hybridoma banks and centralized validation facilities. Researchers should consult these resources when selecting antibodies for their studies .

How might emerging technologies improve validation standards for antibodies like ChlADR1?

Emerging technologies with potential to transform antibody validation include:

  • CRISPR/Cas9 knockout validation: Systematic generation of knockout cell lines for definitive specificity testing

  • Single-cell proteomics: Correlation of antibody signal with single-cell mass spectrometry

  • Advanced imaging techniques: Super-resolution microscopy for more precise localization validation

  • AI-based prediction tools: Computational approaches to predict cross-reactivity and specificity

  • Standardized reference materials: Development of universal controls for antibody performance

The combination of genome editing technologies with high-throughput screening approaches presents significant opportunities for improving antibody validation standards .

What considerations are important when transitioning ChlADR1 Antibody experiments from research to clinical applications?

Clinical translation requires additional validation dimensions:

  • Analytical validation: Rigorous assessment of sensitivity, specificity, precision, and reproducibility

  • Clinical validation: Demonstration of association with biological or clinical outcomes

  • Standardization: Development of reference standards and controls for clinical settings

  • Stability testing: Evaluation of antibody performance under various storage and handling conditions

  • Regulatory considerations: Compliance with applicable regulations for diagnostic use

The transition from research to clinical applications requires significantly more extensive validation, including validation across diverse patient populations and sample types .

How can researchers contribute to improving the quality of antibody reagents in the scientific community?

Researcher contributions to antibody quality improvement include:

  • Comprehensive reporting: Detailed documentation of validation methods and results

  • Resource sharing: Contributing validated antibodies to repositories

  • Negative result publication: Reporting antibodies that fail validation tests

  • Reproducibility initiatives: Participation in multi-laboratory validation studies

  • Education and training: Improving researcher understanding of proper antibody validation

It has been estimated that inadequate antibody characterization results in financial losses of $0.4–1.8 billion per year in the United States alone, highlighting the economic as well as scientific importance of improving antibody quality .

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