TSA1 Antibody
Description
Biological Role of Tsa1
Tsa1 is a 2-Cys peroxiredoxin in yeast with two primary functions:
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Peroxidase activity: Neutralizes reactive oxygen species (ROS) via redox-active cysteine residues (Cys47 and Cys170) .
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Chaperone activity: Prevents protein aggregation under oxidative stress, particularly protecting ribosomal proteins and translation machinery .
Key roles include:
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Suppressing genomic instability by scavenging endogenous H₂O₂ .
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Mitigating protein aggregation caused by misfolded proteins or translational errors .
Applications of TSA1 Antibody in Research
TSA1 antibody has been utilized in diverse experimental contexts:
Tsa1 in Genome Stability
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Deletion of TSA1 increases mutation rates (base substitutions, frameshifts, chromosomal rearrangements) .
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Tsa1 collaborates with DNA repair pathways (e.g., Rad51) to prevent ROS-induced DNA damage .
Role in Translation Fidelity
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Tsa1-deficient cells show ribosomal protein aggregation and elevated translational errors .
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Peroxidase activity (Cys47-dependent) is essential for protecting ribosomes from ROS during translation .
Metabolic Interactions
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Tsa1 physically interacts with glycolytic enzymes (e.g., Pyk1) under zinc-deficient conditions, suggesting a role in metabolic adaptation .
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Association with Hsp42 highlights its chaperone function in protein quality control .
Regulatory and Disease Relevance
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Yeast models: Tsa1 dysfunction mimics oxidative stress conditions seen in aging and neurodegenerative diseases .
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Therapeutic potential: Homologs in pathogens (e.g., Trypanosoma cruzi TSA-1) are vaccine candidates, underscoring conserved redox roles .
Limitations and Considerations
Product Specs
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Target Background
Q&A
Basic Research Questions
What experimental validation methods ensure TSA1 antibody specificity in target detection?
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Methodological approach:
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Perform knockout/knockdown validation using siRNA or CRISPR-modified cell lines (e.g., Histoplasma TSA1 knockdown strains showed reduced redox homeostasis ).
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Use peptide blocking assays with antigenic peptides to confirm antibody-epitope binding specificity.
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Combine multiple detection platforms (e.g., ELISA for quantitative analysis and Western blot for molecular weight confirmation) .
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What are the primary applications of TSA1 antibodies across model systems?
How to standardize TSA1 detection protocols across laboratories?
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Use reference controls (e.g., recombinant LY6E protein for human studies ).
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Optimize fixation/permeabilization conditions to preserve epitopes (critical for intracellular fungal TSA1 detection ).
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Include cross-species reactivity panels (e.g., validate against Arabidopsis TSA1 homologs if studying plant systems ).
Advanced Research Questions
How to resolve discrepancies in TSA1 expression data between studies?
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Root cause analysis:
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Solution: Perform epitope mapping and use orthogonal methods (e.g., flow cytometry vs. immunohistochemistry) to confirm findings.
What strategies address TSA1 homolog interference in multi-species studies?
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Computational alignment: Identify conserved regions using tools like Clustal Omega (e.g., fungal TSA1 vs. human LY6E share <15% homology ).
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Custom antibody design: Target species-specific domains (e.g., the C-terminal region of Histoplasma TSA1 lacks homology to human LY6E ).
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Competitive ELISAs: Pre-absorb antibodies with non-target homologs to reduce cross-reactivity .
How does redox state affect TSA1 antibody performance in oxidative stress models?
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Challenge: Oxidative modifications (e.g., cysteine sulfonation) in TSA1 may mask epitopes .
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Mitigation:
Methodological Best Practices
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For structural studies: Employ hydrogen-deuterium exchange mass spectrometry (HDX-MS) to analyze TSA1-antibody binding interfaces, as demonstrated for TNF-alpha inhibitors .
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For in vivo models: Use macrophage infection assays with TSA1-deficient strains to quantify antibody-mediated neutralization efficacy .
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Data reporting: Always include GenBank accession numbers for TSA1 variants (e.g., LY6E: NP_002337.1) to clarify isoform specificity .
