SPAC8C9.12c Antibody

What are the validated applications for SPAC8C9.12c antibody in yeast mitochondrial research?

The SPAC8C9.12c antibody has been validated for enzyme-linked immunosorbent assay (ELISA) and Western blotting applications . When using this antibody in Western blot experiments, researchers should:

• Use appropriate lysis buffers that effectively solubilize mitochondrial membrane proteins

• Include reducing agents in sample preparation to maintain protein structure

• Transfer proteins using protocols optimized for hydrophobic membrane proteins

• Block with 5% non-fat milk or BSA in TBS-T for at least 1 hour at room temperature

• Use the antibody at a dilution of 1:1000 to 1:5000 (specific optimization required)

For ELISA applications, indirect ELISA protocols using purified SPAC8C9.12c recombinant protein as a positive control is recommended with a typical dilution range of 1:2000 to 1:10000 .

What is the specificity profile of this antibody against homologous mitochondrial carrier proteins?

This polyclonal antibody was raised against recombinant Schizosaccharomyces pombe (strain 972/ATCC 24843) SPAC8C9.12c protein . While specific cross-reactivity data is limited, researchers should consider:

• High sequence conservation exists among mitochondrial carrier proteins across species

• Potential cross-reactivity with other mitochondrial carriers, particularly SPAC17H9.08 and SPBC27B12.09c, which are predicted to transport coenzyme A and FAD respectively

• Western blot analysis typically shows a band at approximately 35-40 kDa (predicted molecular weight of deglycosylated protein)

For critical applications requiring absolute specificity, epitope competition assays using the immunizing peptide are recommended to confirm binding specificity.

How should researchers optimize sample preparation to maximize detection of mitochondrial membrane proteins?

Mitochondrial membrane proteins like SPAC8C9.12c require specialized extraction procedures:

• Subcellular fractionation protocol:

  • Enzymatically digest yeast cell wall using Zymolyase (1-5 mg/ml) for 30-60 minutes

  • Homogenize cells using Dounce homogenizer in isotonic buffer (0.6M sorbitol, 10mM HEPES, pH 7.4)

  • Perform differential centrifugation steps to isolate mitochondrial fraction

  • Verify enrichment using mitochondrial markers (e.g., porin)

• Protein extraction considerations:

  • Use detergents suitable for membrane proteins (e.g., 1-2% Triton X-100, CHAPS, or digitonin)

  • Include protease inhibitors to prevent degradation

  • Maintain sample at 4°C throughout preparation

  • Consider mild sonication to improve extraction efficiency

• Sample buffer components:

  • Include reducing agents (5-10 mM DTT or β-mercaptoethanol)

  • Use 1-2% SDS for complete denaturation

  • Heat samples at 70°C instead of boiling to prevent aggregation

This methodology helps maintain protein integrity while maximizing extraction efficiency .

What controls are essential when using SPAC8C9.12c antibody in experimental workflows?

Proper experimental design requires multiple controls:

The validation should demonstrate a single band of expected molecular weight in wild-type samples that is absent or reduced in knockout/knockdown controls .

How can researchers verify the functional relevance of proteins detected with this antibody?

To establish biological significance:

• Correlation with gene expression:

  • Compare protein levels with mRNA expression under various conditions

  • Use RT-qPCR to quantify SPAC8C9.12c transcript levels

• Functional assays:

  • Measure mitochondrial iron content using colorimetric assays

  • Assess mitochondrial function via oxygen consumption measurements

  • Monitor iron-dependent enzyme activities in mitochondria

• Localization confirmation:

  • Perform immunofluorescence microscopy with mitochondrial markers

  • Use subcellular fractionation followed by immunoblotting

  • Consider electron microscopy for precise localization

These approaches connect antibody-detected signals to biological function .

How can SPAC8C9.12c antibody be integrated into multi-parameter studies of mitochondrial iron homeostasis?

For comprehensive mitochondrial iron transport research:

• Protein-protein interaction studies:

  • Co-immunoprecipitation with SPAC8C9.12c antibody to identify interaction partners

  • Proximity labeling methods (BioID or APEX) using SPAC8C9.12c as bait

  • Yeast two-hybrid screening with SPAC8C9.12c as bait

• Iron homeostasis pathway analysis:

  • Combine with antibodies against other iron transport proteins (e.g., Atm1)

  • Monitor iron-responsive transcription factors

  • Measure iron-sulfur cluster enzyme activities

• Stress response characterization:

  • Analyze SPAC8C9.12c expression under oxidative stress conditions

  • Examine protein levels during iron starvation or overload

  • Correlate with mitochondrial morphology changes

This integrative approach provides a systems-level understanding of mitochondrial iron transport mechanisms .

What strategies can resolve weak or absent signals when using SPAC8C9.12c antibody?

Common issues with mitochondrial carrier protein detection include:

• Protein extraction optimization:

  • Test alternative detergents (DDM, LDAO, or NP-40)

  • Increase detergent concentration incrementally (0.5-3%)

  • Try different buffer compositions (varying salt and pH)

• Signal enhancement approaches:

  • Increase antibody concentration (1:500 to 1:100)

  • Extend primary antibody incubation (overnight at 4°C)

  • Use signal amplification systems (biotin-streptavidin or tyramine)

  • Test alternative secondary antibodies

• Protein modification considerations:

  • Evaluate effects of phosphatase treatment

  • Consider deglycosylation with PNGase F or similar enzymes

  • Test native versus denatured conditions

• Technical adjustments:

  • Optimize transfer conditions for hydrophobic proteins

  • Reduce washing stringency (lower salt concentration)

  • Use PVDF membrane instead of nitrocellulose

These approaches systematically address potential causes of detection failure .

How does SPAC8C9.12c antibody performance compare to analogous antibodies against mitochondrial carrier proteins?

When evaluating this antibody in relation to other mitochondrial carrier protein antibodies:

• Cross-species comparison:

  • The antibody is specifically reactive against S. pombe SPAC8C9.12c

  • Similar mitochondrial carrier proteins exist in S. cerevisiae and other fungi

  • Limited cross-reactivity is expected with orthologs from evolutionarily distant species

• Performance metrics:

  • Sensitivity is comparable to other mitochondrial carrier protein antibodies

  • Background typically resembles patterns seen with other membrane protein antibodies

  • May require additional optimization compared to antibodies against soluble proteins

• Alternative approaches:

  • Consider epitope-tagged constructs for difficult detection scenarios

  • Mass spectrometry-based approaches can complement antibody-based detection

  • Proximity labeling methods may provide alternative detection strategies

This comparative context helps researchers select appropriate tools for specific experimental questions .

What emerging techniques might enhance the utility of SPAC8C9.12c antibody in yeast mitochondrial research?

Advanced methodologies show promise for improved detection and functional characterization:

• Single-cell protein analysis:

  • Adapting CyTOF and imaging mass cytometry for yeast cells

  • Developing microfluidic approaches for single-cell Western blotting

  • Implementing proximity ligation assays for in situ protein detection

• Live-cell applications:

  • Engineering intrabodies based on SPAC8C9.12c antibody sequence

  • Developing split-GFP complementation systems for dynamic studies

  • Creating nanobody derivatives for in vivo applications

• Structural biology integration:

  • Using antibody-based purification for cryo-EM studies

  • Combining with hydrogen-deuterium exchange mass spectrometry

  • Facilitating native protein complex isolation for structural analysis

• Systems biology approaches:

  • Integration with proteome-wide interaction studies

  • Correlation with metabolomics data on iron-dependent pathways

  • Computational modeling of iron transport networks

These innovations represent the frontier of antibody-based research in mitochondrial biology .

How can SPAC8C9.12c antibody contribute to understanding the evolution of mitochondrial iron transport?

This antibody enables evolutionary studies of mitochondrial carrier proteins:

• Ortholog identification and analysis:

  • Detect structural and functional conservation across fungal species

  • Compare expression patterns of orthologs in different yeasts

  • Assess functional complementation between species

• Adaptation studies:

  • Examine expression levels under different environmental pressures

  • Compare iron transport mechanisms across evolutionary divergent species

  • Analyze sequence and structural variations in relation to function

• Methodological approaches:

  • Use Western blotting with carefully controlled cross-reactivity testing

  • Complement with genomic and transcriptomic data

  • Integrate with phylogenetic analyses of carrier protein families

This evolutionary perspective provides context for the fundamental role of mitochondrial iron transport across species .