SPBC19C7.05 Antibody

What is SPBC19C7.05 Antibody and what organism does it target?

SPBC19C7.05 Antibody (Product Code: CSB-PA527656XA01SXV) is a polyclonal antibody raised in rabbits against a recombinant protein from Schizosaccharomyces pombe (strain 972 / ATCC 24843), commonly known as fission yeast. The antibody specifically targets the protein encoded by the SPBC19C7.05 gene (Uniprot No. O60154). It is purified using antigen affinity methods and is intended solely for research applications, not for diagnostic or therapeutic purposes .

What are the validated applications for SPBC19C7.05 Antibody?

The SPBC19C7.05 Antibody has been validated for Enzyme-Linked Immunosorbent Assay (ELISA) and Western Blotting (WB) applications. These techniques allow researchers to detect and quantify the target protein in various experimental contexts. The antibody's polyclonal nature makes it suitable for detecting the target protein across different experimental conditions, providing flexibility in research applications .

How should SPBC19C7.05 Antibody be stored for optimal stability?

For optimal stability and longevity, SPBC19C7.05 Antibody should be stored at -20°C or -80°C upon receipt. Repeated freeze-thaw cycles should be avoided to maintain antibody integrity and function. The antibody is provided in liquid form, suspended in a preservation buffer containing 50% glycerol, 0.01M PBS (pH 7.4), and 0.03% Proclin 300 as a preservative .

What positive controls are recommended when first validating SPBC19C7.05 Antibody performance?

When validating SPBC19C7.05 Antibody performance, it is essential to include appropriate positive controls. The ideal positive control would be lysates from wild-type Schizosaccharomyces pombe (strain 972 / ATCC 24843), as this is the species for which the antibody has been developed. For a more definitive positive control, overexpression systems of the SPBC19C7.05 protein in either the native organism or heterologous expression systems can be used. Additionally, recombinant SPBC19C7.05 protein can serve as a highly specific positive control. Including lysates from a SPBC19C7.05 knockout strain as a negative control can further validate antibody specificity .

Can SPBC19C7.05 Antibody be used for chromatin immunoprecipitation (ChIP) experiments?

While SPBC19C7.05 Antibody is primarily validated for ELISA and Western blotting, its potential utility in chromatin immunoprecipitation (ChIP) experiments would depend on several factors. If SPBC19C7.05 is a nuclear protein or associates with chromatin, the antibody might be suitable for ChIP. From similar research on yeast proteins, such as the Abo1 protein which was successfully used in ChIP experiments, we can infer a potential methodology. For ChIP applications, crosslink cells with 1% formaldehyde for 15 minutes, followed by cell lysis and sonication to generate DNA fragments of approximately 200-500 bp. Use 2-5 μg of SPBC19C7.05 Antibody per immunoprecipitation reaction, and include appropriate controls like IgG and input samples. Optimization of antibody concentration, crosslinking time, and sonication conditions is essential for successful ChIP experiments .

How can I use SPBC19C7.05 Antibody to study protein interactions in fission yeast?

To study protein interactions involving SPBC19C7.05 in fission yeast, co-immunoprecipitation (co-IP) experiments can be designed using this antibody. First, prepare whole-cell extracts from Schizosaccharomyces pombe under non-denaturing conditions to preserve protein-protein interactions. Immunoprecipitate the SPBC19C7.05 protein using 2-5 μg of the antibody bound to protein A/G beads. After washing to remove non-specific interactions, analyze the precipitated complexes by Western blotting for potential interaction partners. To validate interactions, perform reciprocal co-IPs and include controls such as IgG immunoprecipitation and lysates from SPBC19C7.05 deletion strains. This approach has been successful in identifying protein interactions in similar studies, such as those that discovered Abo1's interaction with FACT complex components Spt16 and Pob3 .

What epitope prediction methods can help understand SPBC19C7.05 Antibody binding?

Understanding the epitope recognized by SPBC19C7.05 Antibody can enhance experimental design and interpretation. Modern computational approaches similar to those used for therapeutic antibodies can be applied. Begin with 3D structure prediction of the SPBC19C7.05 protein using AlphaFold2, which has proven effective for predicting protein structures. Next, employ molecular docking software, such as those in the Discovery Studio program, to predict potential antibody binding sites. Validate these predictions experimentally through competitive binding assays or by testing the antibody's reactivity against synthesized peptide fragments. This approach mirrors advanced epitope mapping techniques used in recent antibody research, where synthetic peptides coupled to carriers like keyhole limpet hemocyanin (KLH) are used to confirm predicted epitopes through ELISA and competitive binding assays .

What are the common causes for false negative results when using SPBC19C7.05 Antibody?

False negative results when using SPBC19C7.05 Antibody can stem from multiple factors. Insufficient protein extraction is a primary concern, particularly with yeast cells which have rigid cell walls. Using robust extraction methods involving mechanical disruption (glass beads or sonication) in combination with detergent-based lysis buffers is recommended. Protein denaturation during sample preparation can also destroy epitopes; ensure that sample preparation conditions preserve the native epitope structure. Additionally, inadequate transfer during Western blotting, particularly for high molecular weight proteins, can lead to false negatives. Extended transfer times or using specialized transfer methods for difficult proteins might be necessary. Finally, if the target protein is expressed at low levels, signal amplification methods or more sensitive detection systems may be required .

How can I address high background issues in immunoblots using SPBC19C7.05 Antibody?

High background in immunoblots using SPBC19C7.05 Antibody can be addressed through several optimizations. First, increase the number and duration of washing steps after antibody incubations (5-6 washes of 10 minutes each). Second, adjust the antibody dilution; too concentrated antibody solutions often cause high background. Third, optimize the blocking protocol by testing different blocking agents (5% milk, 3-5% BSA, or commercial blocking reagents) and increasing blocking time. Fourth, pre-absorb the antibody with non-specific proteins by incubating the diluted antibody with membranes containing non-target proteins. Finally, reduce the concentration of the secondary antibody, as this is often a source of background. For particularly problematic samples, consider using specialized low-background detection systems or switching from chemiluminescence to fluorescence-based detection methods .

What strategies can address cross-reactivity issues with SPBC19C7.05 Antibody?

Cross-reactivity issues with SPBC19C7.05 Antibody can be addressed through several strategies. First, increase the stringency of washing steps by adding higher concentrations of salt (up to 500 mM NaCl) or detergent (0.1-0.3% Tween-20) to washing buffers. Second, perform antibody pre-absorption with lysates from organisms that show cross-reactivity, effectively depleting antibodies that bind to non-target proteins. Third, optimize the antibody dilution, as more dilute solutions often show improved specificity. Fourth, consider using more stringent blocking conditions, such as combinations of protein blockers (e.g., milk plus BSA). Finally, validate specificity by including appropriate controls: positive controls from wild-type S. pombe, negative controls from SPBC19C7.05 deletion strains, and testing the antibody against recombinant SPBC19C7.05 protein. In cases of persistent cross-reactivity, antibody purification techniques such as antigen-specific affinity purification may be necessary .

How can SPBC19C7.05 Antibody be used to study transcriptional regulation in fission yeast?

SPBC19C7.05 Antibody can be employed to investigate transcriptional regulation in fission yeast through several approaches. If SPBC19C7.05 is involved in transcriptional processes (similar to other yeast proteins like Abo1), chromatin immunoprecipitation (ChIP) followed by qPCR or sequencing (ChIP-seq) can map its genomic binding sites. These experiments would require optimization of the ChIP protocol specifically for this antibody. Additionally, combining antibody-based protein detection with RNA analysis techniques can reveal correlations between SPBC19C7.05 protein levels/localization and transcriptional outputs. For instance, strand-specific RT-PCR could detect changes in transcriptional patterns, including cryptic transcription, in SPBC19C7.05 mutant strains compared to wild-type. Western blotting with this antibody can also be used to monitor SPBC19C7.05 protein levels in response to various treatments or genetic manipulations that affect transcription, providing insights into its regulatory role .

What insights can SPBC19C7.05 Antibody provide about chromatin organization in fission yeast?

SPBC19C7.05 Antibody can provide valuable insights into chromatin organization in fission yeast, particularly if SPBC19C7.05 functions similarly to chromatin-associated proteins. Combining ChIP with this antibody and histone modification-specific antibodies can reveal associations between SPBC19C7.05 and particular chromatin states. Additionally, comparative ChIP analyses in wild-type and mutant backgrounds can identify how genetic perturbations affect SPBC19C7.05 localization across the genome. Immunofluorescence microscopy using this antibody can visualize the spatial distribution of SPBC19C7.05 within the nucleus, potentially revealing associations with specific nuclear compartments or chromatin domains. To quantify the role of SPBC19C7.05 in maintaining nucleosome architecture, researchers could perform nucleosome occupancy analyses (e.g., MNase-seq) in wild-type versus SPBC19C7.05 deletion strains, while using the antibody to confirm protein depletion .

How can SPBC19C7.05 Antibody contribute to understanding protein quality control mechanisms?

SPBC19C7.05 Antibody can significantly contribute to understanding protein quality control mechanisms in fission yeast through multiple experimental approaches. By monitoring SPBC19C7.05 protein levels and modifications under various stress conditions (heat shock, oxidative stress, ER stress), researchers can determine if this protein is regulated in response to cellular stress. Co-immunoprecipitation experiments using this antibody followed by mass spectrometry analysis can identify interaction partners involved in protein quality control machinery. Additionally, researchers can investigate if SPBC19C7.05 undergoes post-translational modifications related to quality control by immunoprecipitating the protein with this antibody and analyzing modifications by mass spectrometry or with modification-specific antibodies. If SPBC19C7.05 is involved in protein quality control, the antibody can be used to track its subcellular localization changes during stress responses through immunofluorescence microscopy or subcellular fractionation followed by Western blotting .

How does SPBC19C7.05 Antibody performance compare to other fission yeast antibodies in multi-protein complex studies?

When comparing SPBC19C7.05 Antibody performance to other fission yeast antibodies in multi-protein complex studies, several factors require consideration. As a polyclonal antibody, SPBC19C7.05 Antibody may offer advantages in capturing various epitopes of the target protein, potentially increasing detection sensitivity. This characteristic can be particularly valuable when investigating protein complexes where conformational changes might mask certain epitopes. For co-immunoprecipitation experiments, the polyclonal nature of this antibody may facilitate pulling down intact complexes more efficiently than monoclonal antibodies that target single epitopes which might be buried in complex formations.

The following table compares typical performance characteristics of polyclonal antibodies like SPBC19C7.05 Antibody with monoclonal antibodies in protein complex studies:

When designing multi-protein complex studies, consider using SPBC19C7.05 Antibody for initial complex isolation, followed by detection with more specific monoclonal antibodies against suspected interaction partners for confirmation .

What computational approaches can optimize epitope prediction for SPBC19C7.05 Antibody research?

Optimizing epitope prediction for SPBC19C7.05 Antibody research can be achieved through a multi-step computational approach. Begin with sequence-based predictions using algorithms that identify hydrophilic, accessible, and mobile regions of the protein, which are likely to be antigenic. Next, implement structure-based predictions using AlphaFold2 to generate a high-confidence 3D model of the SPBC19C7.05 protein. This structural information can then be fed into specialized epitope prediction software that considers surface accessibility, hydrophilicity, and B-cell epitope propensity.

For more advanced predictions, molecular docking simulations between the antibody and antigen can be performed. Programs like RosettaAntibody can model antibody structures, while docking programs such as SnugDock can predict binding conformations with flexibility in the interface side chains and CDR loops. This approach has been successfully used in antibody design protocols and can be adapted for epitope mapping.

After computational prediction, perform in silico alanine scanning on the predicted epitopes to identify potential hotspots crucial for antibody-antigen interaction. This computational workflow mirrors established protocols in antibody design and can significantly streamline experimental epitope mapping efforts by narrowing down candidate regions for experimental validation .

How can SPBC19C7.05 Antibody be integrated into high-throughput screening approaches for fission yeast mutant libraries?

Integrating SPBC19C7.05 Antibody into high-throughput screening approaches for fission yeast mutant libraries requires a systematic methodology combining antibody-based detection with automated screening platforms. First, develop a reliable ELISA-based detection system using the SPBC19C7.05 Antibody that can be adapted to 96- or 384-well formats. This system can quantitatively measure SPBC19C7.05 protein levels across numerous mutant strains.

For image-based high-throughput screening, establish an immunofluorescence protocol using SPBC19C7.05 Antibody that is compatible with automated microscopy platforms. This approach can simultaneously assess protein levels, subcellular localization, and potential co-localization with other factors across mutant libraries.

Additionally, the antibody can be adapted for reverse-phase protein arrays (RPPA), where lysates from hundreds of mutant strains are spotted onto membranes and probed with SPBC19C7.05 Antibody. This allows rapid assessment of protein expression across large strain collections.

To maximize throughput, consider developing a multiplexed detection system where SPBC19C7.05 Antibody is combined with antibodies against other proteins of interest, each conjugated to different fluorophores or utilizing different detection systems. This approach enables simultaneous assessment of multiple proteins across mutant libraries, significantly increasing the information gathered per experiment and facilitating the identification of functional relationships between SPBC19C7.05 and other cellular components .