SPBC26H8.05c Antibody

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Description

Molecular Characterization of SPBC26H8.05c

Gene Overview

  • Gene Symbol: SPBC26H8.05c

  • Gene ID: 2540680

  • Protein: Putative serine/threonine protein phosphatase (NP_596646.1)

  • Function: Predicted to regulate phosphorylation-dependent signaling pathways, with homology to human protein phosphatase 4 (PP4) .

PropertyDetails
OrganismSchizosaccharomyces pombe (strain 972 / ATCC 24843)
Protein Size~35 kDa (predicted)
Enzyme ActivitySerine/threonine phosphatase activity (inferred from conserved domains)
Subcellular LocalizationCytoplasmic/nuclear (predicted)

Applications in Research

The SPBC26H8.05c antibody is critical for:

  • Functional Studies: Investigating cell cycle regulation, chromosome segregation, and stress response pathways in fission yeast .

  • Protein-Protein Interaction Analysis: Identifying binding partners like Ppk18 and Dis2 phosphatases .

  • Post-Translational Modification Studies: Detecting phosphorylation states in signaling cascades .

Key Findings Using This Antibody:

  • SPBC26H8.05c (Ppe2) collaborates with Ppk18 to ensure equal chromosome segregation during mitosis .

  • Depletion leads to hypersensitivity to microtubule-destabilizing agents, implicating its role in mitotic checkpoint control .

Validation and Specificity

  • Validation Methods: Western blotting and immunoprecipitation confirmed specificity for the endogenous SPBC26H8.05c protein .

  • Cross-Reactivity: No reported cross-reactivity with other phosphatases (e.g., PP1, PP2A) in S. pombe .

Technical Considerations

  • Recommended Dilutions: 1:500–1:2,000 for Western blotting .

  • Storage: Stable at -20°C in glycerol-based buffer .

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M Phosphate Buffered Saline (PBS), pH 7.4
Form
Liquid
Lead Time
Made-to-order (14-16 weeks)
Synonyms
SPBC26H8.05c antibody; Putative serine/threonine-protein phosphatase C26H8.05c antibody; EC 3.1.3.16 antibody
Target Names
SPBC26H8.05c
Uniprot No.

Target Background

Database Links
Protein Families
PPP phosphatase family, PP-1 subfamily
Subcellular Location
Cytoplasm. Nucleus.

Q&A

What is SPBC26H8.05c and why is it studied in fission yeast research?

SPBC26H8.05c is a protein found in Schizosaccharomyces pombe (fission yeast), identified by UniProt accession number O74789. This protein serves as an important research target in fundamental cellular biology studies, as fission yeast represents a well-established model organism for investigating eukaryotic cellular processes. The protein likely plays crucial roles in cellular pathways that are evolutionarily conserved across eukaryotes, making findings potentially applicable to understanding similar mechanisms in more complex organisms.

Research methodologies using this protein typically involve:

  • Genetic manipulation of the SPBC26H8.05c gene to study phenotypic effects

  • Protein-protein interaction studies to map cellular pathways

  • Localization studies to determine subcellular distribution

  • Functional assays to elucidate biological roles

What are the fundamental properties of SPBC26H8.05c Antibody that researchers should consider?

SPBC26H8.05c Antibody is a polyclonal antibody raised in rabbits through immunization with recombinant Schizosaccharomyces pombe (strain 972/ATCC 24843) SPBC26H8.05c protein . Key properties include:

  • Antibody Class: Polyclonal IgG

  • Source Organism: Rabbit

  • Purification Method: Antigen affinity purified

  • Formulation: Liquid form containing 50% glycerol, 0.01M PBS (pH 7.4), with 0.03% Proclin 300 as preservative

  • Validated Applications: ELISA and Western Blot

  • Storage Requirements: -20°C or -80°C, with avoidance of repeated freeze-thaw cycles

  • Species Reactivity: Specific for Schizosaccharomyces pombe (strain 972/ATCC 24843)

The polyclonal nature means it contains a mixture of antibodies recognizing different epitopes on the target protein, potentially providing more robust detection but also requiring more thorough validation.

How should researchers optimize Western Blot protocols when using SPBC26H8.05c Antibody?

Optimizing Western Blot protocols with SPBC26H8.05c Antibody requires careful consideration of multiple parameters:

ParameterRecommended MethodRationale
Sample PreparationExtract proteins using non-denaturing buffers with protease inhibitorsPreserves native epitopes and prevents degradation
Protein Loading20-40 μg total protein per laneEnsures detection of medium to low abundance proteins
Gel Percentage10-12% acrylamideOptimal separation range for most yeast proteins
Transfer ConditionsWet transfer at 100V for 1 hour or 30V overnight at 4°CComplete transfer while maintaining protein integrity
Blocking Solution5% non-fat dry milk or BSA in TBSTReduces non-specific binding
Primary Antibody DilutionInitial test at 1:500, 1:1000, and 1:2000Determines optimal signal-to-noise ratio
Incubation ConditionsOvernight at 4°C with gentle agitationMaximizes specific binding
Washing3 × 10 minutes with TBSTRemoves unbound antibody
Detection MethodEnhanced chemiluminescenceProvides sensitivity for detection

Essential controls include:

  • Positive control (wild-type S. pombe extract)

  • Negative control (extract from SPBC26H8.05c knockout strain, if available)

  • Loading control (antibody against housekeeping protein)

The verification should focus on confirming a single band of the expected molecular weight that disappears in knockout samples, which is crucial for establishing specificity .

What validation experiments are necessary to confirm SPBC26H8.05c Antibody specificity?

Comprehensive validation of SPBC26H8.05c Antibody should include multiple complementary approaches:

Validation MethodExperimental DesignExpected Outcome
Genetic ValidationCompare antibody reactivity between wild-type and SPBC26H8.05c knockoutsSignal present in wild-type; absent in knockout
Peptide CompetitionPre-incubate antibody with excess purified antigenSignificant reduction or elimination of signal
Western Blot AnalysisRun extracts from different cellular conditionsSingle band of expected molecular weight
Cross-reactivity AssessmentTest against related yeast speciesSignal specific to S. pombe, not in other species
Immunoprecipitation-MSPull down with antibody followed by mass spectrometrySPBC26H8.05c as predominant identified protein
Orthogonal DetectionCompare with differently targeted antibody or tagged proteinConcordant results between methods

"Each antibody must be verified based on the content of the product sheet, and subsequently through experimentation to confirm integrity, specificity and selectivity. Verification needs to focus on the precise application and tissue/cell type for which the antibody will be used, and all verification data must be reported openly."

How can SPBC26H8.05c Antibody be effectively incorporated into multi-parameter experimental designs?

For comprehensive multi-parameter studies, SPBC26H8.05c Antibody can be integrated through several methodological approaches:

  • Co-immunoprecipitation studies:

    • Use SPBC26H8.05c Antibody to pull down the target protein

    • Identify interaction partners through mass spectrometry

    • Validate interactions through reciprocal co-IP experiments

  • Multiplexed immunofluorescence:

    • Label SPBC26H8.05c Antibody with one fluorophore

    • Label antibodies against other proteins of interest with spectrally distinct fluorophores

    • Analyze co-localization patterns using confocal microscopy

  • ChIP-seq applications (if SPBC26H8.05c has DNA interactions):

    • Immunoprecipitate chromatin fragments using the antibody

    • Sequence pulled-down DNA to identify binding sites

    • Correlate with transcriptome data to identify regulated genes

  • Protein complex analysis:

    • Combine with Blue Native PAGE or gradient ultracentrifugation

    • Detect SPBC26H8.05c in specific protein complexes

    • Compare complex composition under different cellular conditions

"High-throughput sequencing can be achieved to rapidly and efficiently identify neutralizing antibodies with therapeutic and prophylactic effects." Similar approaches can be applied to study SPBC26H8.05c in cellular contexts.

What strategies can researchers employ to troubleshoot non-specific binding issues with SPBC26H8.05c Antibody?

Non-specific binding is a common challenge with antibodies that can be addressed through systematic optimization:

IssueTroubleshooting ApproachScientific Rationale
High BackgroundTest alternative blocking agents (BSA, casein, commercial blockers)Different blockers have varying efficacy depending on the sample type
Multiple BandsTitrate antibody concentration (try 1:2000, 1:5000, 1:10000)Reduces off-target binding while maintaining specific signal
Non-specific SignalIncrease washing stringency (0.1-0.5% Tween-20, higher salt)Disrupts weak non-specific interactions
Cross-reactivityPre-adsorb antibody with acetone powder from related speciesRemoves antibodies that bind to conserved epitopes
Variable ResultsStandardize protein extraction methodsEnsures consistent epitope presentation
False PositivesInclude peptide competition controlsConfirms signal specificity

"Manufacturers, vendors and scientists all share the responsibility to ensure the antibodies are fit for purpose." This collaborative approach to validation is essential for achieving reproducible results.

How can researchers enhance sensitivity for detection of low-abundance SPBC26H8.05c protein?

For proteins expressed at low levels, several methodological enhancements can significantly improve detection:

  • Sample Preparation Optimization:

    • Subcellular fractionation to concentrate the compartment containing SPBC26H8.05c

    • Immunoprecipitation to enrich the target protein prior to analysis

    • Use of specialized extraction buffers optimized for membrane or nuclear proteins

  • Signal Amplification Techniques:

    • Tyramide signal amplification (TSA) for immunohistochemistry or immunofluorescence

    • High-sensitivity chemiluminescent substrates for Western blot

    • Polymeric HRP detection systems that provide signal enhancement

  • Detection Technology Selection:

    • Cooled CCD camera systems for extended exposure imaging

    • Proximity ligation assay (PLA) for single-molecule detection

    • Mass spectrometry-based targeted proteomics approaches

"The required selectivity of the antibody is not only determined by the chosen antigen and the dilution/concentration of the antibody, but also by the intended application." Therefore, optimization must be application-specific.

What advanced modifications of SPBC26H8.05c Antibody can facilitate specialized research applications?

SPBC26H8.05c Antibody can be modified for specialized applications through various chemical and biochemical approaches:

Modification TypeMethodologyResearch Application
Direct ConjugationCoupling to fluorophores, enzymes, or biotinFlow cytometry, direct detection without secondary antibody
FragmentationPepsin or papain digestion to generate F(ab')2 or Fab fragmentsReduced background in tissues with high Fc receptor expression
ImmobilizationCovalent coupling to solid supports (agarose, magnetic beads)Affinity purification of SPBC26H8.05c and interacting partners
Cross-linkingChemical cross-linking to target proteins using DSS, BS3, or formaldehydeCapturing transient protein-protein interactions
Surface FunctionalizationAttachment to biosensor surfacesReal-time binding analysis using SPR or BLI

"From 676 antigen-binding IgG1+ clonotypes, TOP10 sequences were selected for expression and characterization, with the most potent one, Abs-9, having nanomolar affinity for the pentameric form of the specific antigen." Similar approaches could be applied to develop improved SPBC26H8.05c detection reagents.

How should researchers assess batch-to-batch variation in SPBC26H8.05c Antibody preparations?

Maintaining experimental reproducibility requires systematic assessment of antibody batch variation:

  • Quantitative Performance Metrics:

    • Compare EC50 values in dose-response ELISA curves

    • Measure signal-to-noise ratios in Western blot applications

    • Determine binding affinity constants using surface plasmon resonance

  • Epitope Recognition Analysis:

    • Perform peptide array analysis to map recognized epitopes

    • Compare patterns between batches to identify recognition shifts

    • Conduct competition assays with defined peptide fragments

  • Standardized Reference Materials:

    • Maintain aliquots of well-characterized S. pombe extracts

    • Use recombinant SPBC26H8.05c protein as a standard

    • Include consistent positive and negative controls across experiments

"Unlike other types of reagents, most antibodies are not molecularly fully defined... and they are sold on the basis of claimed performance rather than physical identity." This reality necessitates rigorous batch testing.

What critical controls should be included in experimental designs using SPBC26H8.05c Antibody?

A comprehensive control strategy is essential for ensuring result validity:

Control TypeImplementationPurpose
Positive ControlWild-type S. pombe extractConfirms antibody function
Negative ControlSPBC26H8.05c knockout extract or unrelated yeast speciesEstablishes specificity
Antibody ControlsNo primary antibody; non-specific IgGIdentifies non-specific secondary antibody binding
Peptide CompetitionPre-incubation with immunizing peptideVerifies epitope specificity
Loading ControlsProbing for housekeeping proteinsNormalizes for protein loading variations
Method ControlsTechnical replicates; standard curvesAssesses method reproducibility
Sample Processing ControlsIdentical processing of all samplesEliminates preparation artifacts

"Chemical fixation and subsequent antigen retrieval, as in IHC, can affect selectivity, depending on the epitope to be detected. Hence, the antibody performance depends on the quality of sample preparation." This highlights the importance of process controls.

How does the polyclonal nature of SPBC26H8.05c Antibody impact experimental design and interpretation?

The polyclonal nature of SPBC26H8.05c Antibody has specific methodological implications:

  • Broader Epitope Recognition:

    • More robust detection across varying experimental conditions

    • Less susceptible to single amino acid mutations or post-translational modifications

    • May recognize denatured protein more effectively than some monoclonals

  • Batch Variation Considerations:

    • New lots may have different epitope recognition profiles

    • Requires more extensive validation between batches

    • May necessitate maintaining reference standards from effective lots

  • Experimental Design Adaptations:

    • Include more extensive controls to confirm specificity

    • Consider parallel validation with orthogonal methods

    • May require affinity purification against recombinant protein for critical applications

"Polyclonal antibodies are molecularly undefined, but even hybridoma-derived monoclonal antibodies may have unpredictabilities." Understanding these characteristics is essential for robust experimental design.

How might SPBC26H8.05c Antibody be utilized in emerging single-cell analysis techniques?

Emerging single-cell methodologies offer exciting opportunities for SPBC26H8.05c research:

  • Single-Cell Proteomics Applications:

    • Mass cytometry (CyTOF) with metal-conjugated SPBC26H8.05c Antibody

    • Microfluidic antibody capture for quantitative single-cell analysis

    • Spatial proteomics using multiplexed antibody staining

  • Integrated Multi-Omics Approaches:

    • Combined antibody-based protein detection with transcriptomics

    • Correlation of SPBC26H8.05c protein levels with genetic variation

    • Temporal analysis of protein expression during cell cycle or differentiation

"High-throughput single-cell RNA and VDJ sequencing of memory B cells... can be achieved to rapidly and efficiently identify neutralizing antibodies with therapeutic and prophylactic effects." These approaches demonstrate how single-cell technologies are transforming immunological research and could similarly advance yeast protein studies.

What methodological considerations are important when developing computational models involving SPBC26H8.05c?

Computational approaches to studying SPBC26H8.05c require specific methodological considerations:

  • Structural Modeling:

    • Implement AlphaFold2 or similar algorithms for protein structure prediction

    • Validate predicted structures through experimental approaches

    • Use molecular docking to predict protein-protein interactions

  • Network Analysis:

    • Integrate SPBC26H8.05c into protein interaction networks

    • Apply graph theory algorithms to identify functional modules

    • Correlate with phenotypic data to predict biological roles

  • Evolutionary Analysis:

    • Identify orthologs across species through sequence alignment

    • Analyze conservation patterns to predict functional domains

    • Construct phylogenetic trees to trace evolutionary relationships

"The 3D theoretical structures of Abs-9 and SpA5 were constructed using the website alphafold2 method. And then, the 3D complex structure of Abs-9 and SpA5 was obtained using molecular docking software." Similar approaches could be applied to understand SPBC26H8.05c structure and interactions.

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