doxa-1 Antibody
Description
Introduction to DOXA-1 Antibody
DOXA-1 (Dual Oxidase-Associated Protein 1) is a protein implicated in oxidative stress regulation, particularly in Caenorhabditis elegans. Antibodies targeting DOXA-1 enable researchers to study its molecular interactions, subcellular localization, and functional roles in redox biology. These antibodies are critical tools for immunoprecipitation, Western blotting, and fluorescence-based assays to investigate DOXA-1’s partnership with signaling kinases like casein kinase 1 gamma (CSNK-1) .
Key Applications of DOXA-1 Antibody
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Protein Interaction Studies: DOXA-1 antibodies have been used to confirm physical interactions with CSNK-1 via co-immunoprecipitation (Co-IP) and pull-down assays .
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Subcellular Localization: Transgenic models expressing DOXA-1::GFP fusion proteins, detected using anti-GFP antibodies, reveal co-localization with CSNK-1::mCherry in specific cellular structures .
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Oxidative Stress Analysis: DOXA-1 antibodies facilitate the measurement of reactive oxygen species (ROS) levels via fluorescent probes (e.g., DCFDA, Amplex Red) in genetic mutants .
Interaction with Casein Kinase 1 Gamma
Role in Oxidative Stress Regulation
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ROS Levels: csnk-1(lf) mutants exhibit 3.3-fold higher DCFDA fluorescence (indicating elevated ROS) compared to wildtype (p < 0.001) .
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HyPer Reporter: The oxidized/reduced HyPer ratio increases by 2.5-fold in csnk-1(lf) mutants (p < 0.01), confirming enhanced oxidative stress .
Implications for Disease Research
DOXA-1’s interaction with CSNK-1 highlights its role in maintaining redox homeostasis, a process dysregulated in neurodegenerative diseases, cancer, and aging. Antibodies against DOXA-1 could aid in:
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Drug Discovery: Screening compounds that modulate oxidative stress pathways.
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Mechanistic Studies: Elucidating how kinase-phosphatase networks regulate ROS production.
Limitations and Future Directions
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Species Specificity: Current DOXA-1 antibodies are validated primarily in C. elegans, limiting translational studies.
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Structural Data: The absence of crystallographic or cryo-EM data for DOXA-1 hampers epitope characterization.
Future work should prioritize humanized DOXA-1 antibody development and high-resolution structural analyses to expand therapeutic applications.
Product Specs
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Target Background
Q&A
Here’s a structured collection of FAQs tailored for researchers working with doxa-1 antibodies in academic contexts, synthesized from peer-reviewed studies and technical guidelines:
How do I validate the specificity of a doxa-1 antibody in C. elegans models?
Methodological Answer:
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Western Blotting: Use lysates from wildtype and doxa-1(lf) mutants. A specific antibody should detect a band in wildtype (~55 kDa for DOXA-1::HA) that disappears in mutants .
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Immunoprecipitation (IP): Co-express doxa-1::HA with interacting partners (e.g., FLAG::CSNK-1). Validate using anti-HA or anti-FLAG antibodies to confirm co-precipitation .
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Rescue Assays: Express doxa-1 transgenes in mutants. Functional antibodies should restore phenotypes (e.g., ROS levels) .
What experimental applications are suitable for doxa-1 antibodies?
Key Applications:
How do I distinguish polyclonal vs. monoclonal doxa-1 antibodies for my study?
Decision Framework:
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Monoclonal:
How do I investigate doxa-1’s interaction with casein kinase 1 gamma (CSNK-1) in redox regulation?
Experimental Design:
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Co-IP/Western Blotting: Co-express DOXA-1::HA and FLAG::CSNK-1 in HEK293T cells. Use anti-HA for IP and anti-FLAG for detection .
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Functional Assays: Measure ROS levels in csnk-1(lf) mutants using HyPer reporters. Compare to wildtype (↓50% in mutants, p < 0.01) .
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Pharmacological Inhibition: Treat cells with CSNK1 inhibitor D4476; observe dose-dependent ROS reduction .
How can I resolve contradictory data on doxa-1’s subcellular localization?
Troubleshooting Steps:
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Fixation Artifacts: Compare methanol/paraformaldehyde fixation in immunofluorescence.
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Tag Interference: Use N-terminal vs. C-terminal tags (e.g., doxa-1::Venus vs. HA::doxa-1) .
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Ortholog Validation: Test antibody cross-reactivity with human DUOXA2 (e.g., membrane vs. cytoplasmic patterns) .
What strategies identify phosphorylation-dependent doxa-1 activity?
Phosphosite Analysis:
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In Silico Prediction: Use Scansite 4.0 to identify CSNK-1 consensus sites (e.g., T343 in DOXA-1) .
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Mutagenesis: Generate T343A mutants; test rescue efficiency in doxa-1(lf) (p < 0.001 vs. wildtype) .
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Phospho-Specific Antibodies: Custom-develop antibodies against phosphorylated T343; validate via Phos-tag SDS-PAGE.
Data Contradiction Analysis
Case Study: Discrepant ROS levels in doxa-1 overexpression models.
