SPAC1399.04c Antibody

What is the SPAC1399.04c antibody and what organism does it target?

The SPAC1399.04c antibody is a rabbit polyclonal antibody raised against recombinant Schizosaccharomyces pombe (strain 972 / ATCC 24843) SPAC1399.04c protein. This antibody specifically targets yeast proteins, particularly those expressed in S. pombe, which is commonly known as fission yeast. The antibody is purified using Protein A/G chromatography, resulting in high specificity for SPAC1399.04c detection in research applications .

What are the recommended storage conditions for maintaining antibody activity?

For optimal preservation of antibody activity, SPAC1399.04c antibody should be stored at either -20°C or -80°C. When handling the antibody, it's advisable to aliquot the stock solution to minimize freeze-thaw cycles, which can degrade protein structure and compromise binding activity. During shipping, the antibody is transported on blue ice to maintain its integrity. Researchers should avoid prolonged exposure to room temperature and implement proper freezer storage protocols immediately upon receipt .

What is the immunogen used to generate this antibody?

The SPAC1399.04c antibody was generated using recombinant Schizosaccharomyces pombe (strain 972 / ATCC 24843) SPAC1399.04c protein as the immunogen. This approach ensures that the resulting antibody has high specificity for the target protein. The immunization process in rabbits produces polyclonal antibodies that recognize multiple epitopes on the target protein, which can enhance detection sensitivity in various experimental applications .

What are the validated applications for SPAC1399.04c antibody?

The SPAC1399.04c antibody has been validated for use in ELISA (Enzyme-Linked Immunosorbent Assay) and Western Blot (WB) applications. For ELISA applications, the antibody can be used to detect and quantify SPAC1399.04c protein in various sample types. In Western Blot applications, the antibody enables visualization of the target protein following electrophoretic separation, allowing researchers to determine protein molecular weight and expression levels across different experimental conditions .

How should SPAC1399.04c antibody be optimized for Western Blot experiments?

For Western Blot optimization with SPAC1399.04c antibody, researchers should conduct titration experiments to determine the optimal antibody concentration, typically starting with a 1:1000 dilution and adjusting based on signal-to-noise ratio. For S. pombe proteins, sample preparation is crucial - cells should be lysed in a buffer containing protease inhibitors to prevent degradation, and proteins denatured in sample buffer containing SDS and a reducing agent.

A titration table for optimization might look like:

Consider using recombinant immunogen protein (supplied with the antibody) as a positive control to validate specificity and optimize detection conditions .

What methodological considerations are important for ELISA using this antibody?

For optimal ELISA performance with SPAC1399.04c antibody, researchers should consider the following methodological approaches:

• Coating concentration: Begin with 1-10 μg/mL of capture antigen

• Blocking solution: Use 3-5% BSA in PBS or similar buffer to minimize background

• Antibody dilution: Start with 1:1000 dilution and adjust based on signal strength

• Incubation conditions: Optimize temperature (4°C overnight or room temperature for 1-2 hours)

• Detection system: Select appropriate secondary antibody (anti-rabbit IgG) conjugated with enzyme such as HRP

• Substrate selection: Choose a substrate compatible with your detection system and desired sensitivity

The inclusion of pre-immune serum (provided with the antibody) as a negative control is essential for distinguishing specific from non-specific binding, allowing accurate data interpretation .

How can epitope mapping be conducted for SPAC1399.04c antibody?

For epitope mapping of SPAC1399.04c antibody, researchers could employ similar techniques to those demonstrated in other antibody research. A comprehensive approach would include:

• Peptide array analysis: Synthesize overlapping peptides spanning the SPAC1399.04c protein sequence and test antibody binding

• Mutagenesis studies: Create point mutations or deletion constructs to identify critical binding residues

• Computational prediction: Utilize bioinformatics tools to predict potential epitopes based on protein structure

• Competition assays: Similar to the competition binding assay described for malaria CSP antibodies, develop a method to assess epitope-specific binding

This multi-faceted approach provides detailed insights into antibody-antigen interactions and can inform experimental design for specific applications requiring epitope knowledge.

How might single-cell sequencing techniques improve SPAC1399.04c antibody development?

Advanced antibody development for targets like SPAC1399.04c could benefit from high-throughput single-cell RNA and VDJ sequencing techniques similar to those used in the SpA5 antibody research. This approach would involve:

• Immunizing models with SPAC1399.04c protein

• Isolating antigen-specific B cells using fluorescence-activated cell sorting (FACS)

• Performing single-cell RNA and VDJ sequencing to identify antigen-binding clonotypes

• Selecting top sequences based on binding affinity and specificity criteria

• Expressing and characterizing candidate antibodies

This methodology could generate more specific and higher-affinity SPAC1399.04c antibodies with improved research applications, similar to how the Abs-9 antibody was identified for S. aureus research .

What controls are essential when working with SPAC1399.04c antibody?

For rigorous experimental design with SPAC1399.04c antibody, researchers should implement the following controls:

• Positive control: Use the provided recombinant immunogen protein (200μg) to confirm antibody binding capacity

• Negative control: Utilize the included pre-immune serum (1ml) to establish baseline reactivity

• Specificity control: Test the antibody against related proteins or samples lacking SPAC1399.04c expression

• Loading control: Include housekeeping protein detection when performing Western blots

• Secondary antibody control: Run a lane without primary antibody to detect non-specific binding

How can researchers analyze conflicting results when using SPAC1399.04c antibody across different detection methods?

When facing discrepancies between ELISA and Western blot results using SPAC1399.04c antibody, researchers should systematically evaluate:

• Protein conformation effects: ELISA typically detects native proteins while Western blot detects denatured forms

• Epitope accessibility: Sample preparation methods may mask or expose different epitopes

• Assay sensitivity differences: ELISA generally offers higher sensitivity than Western blotting

• Cross-reactivity profiles: Different buffer conditions can alter antibody specificity

• Batch variation: Compare lot numbers and standardize positive controls across experiments

A methodical approach would include running parallel experiments with standardized samples, systematically altering single variables to identify the source of discrepancy. Similar analytical approaches have been valuable in other antibody research contexts like the serological equivalence assay described for malaria vaccine development .

How does polyclonal SPAC1399.04c antibody compare with monoclonal alternatives?

The polyclonal nature of SPAC1399.04c antibody offers distinct advantages and limitations compared to hypothetical monoclonal alternatives:

How can researchers integrate SPAC1399.04c antibody studies with high-throughput proteomics approaches?

Integration of SPAC1399.04c antibody with modern proteomics workflows could include:

• Immunoprecipitation followed by mass spectrometry (IP-MS) to identify protein interaction partners

• Chromatin immunoprecipitation (ChIP) combined with sequencing (ChIP-seq) if the protein has DNA-binding properties

• Reverse phase protein arrays (RPPA) for quantitative analysis across multiple samples

• Proximity labeling techniques (BioID, APEX) coupled with antibody validation

• Single-cell proteomics with antibody-based detection for spatial distribution analysis

This integration provides multi-dimensional data about SPAC1399.04c protein function, similar to how researchers utilized mass spectrometry to confirm antibody specificity in the SpA5 antibody study. The approach allows researchers to move beyond simple detection to understand protein-protein interactions and functional networks .