YNL235C Antibody

What is the YNL235C protein and why is it studied?

YNL235C is a systematic name for a protein found in Saccharomyces cerevisiae (baker's yeast), identified by the Uniprot number P53856. This protein is primarily studied in yeast biology research to understand fundamental cellular processes. The antibody against this protein (CSB-PA346116XA01SVG) is raised in rabbits using recombinant Saccharomyces cerevisiae (strain ATCC 204508/S288c) YNL235C protein as the immunogen. The antibody specifically reacts with S. cerevisiae, making it valuable for researchers investigating yeast cellular functions, protein expression patterns, and comparative genomics in eukaryotic models .

What are the typical research applications for the YNL235C antibody?

YNL235C antibody serves multiple research purposes in yeast biology, including protein localization studies, expression analysis, and investigation of protein-protein interactions. Researchers typically employ this antibody in Western blotting, immunoprecipitation, immunofluorescence microscopy, and chromatin immunoprecipitation (ChIP) assays. The specificity of this rabbit-raised antibody for S. cerevisiae makes it particularly valuable when studying protein expression in different yeast growth conditions, during various cell cycle stages, or in genetic mutants where YNL235C function may be altered .

How does the YNL235C antibody compare with other yeast protein detection methods?

Unlike direct genetic approaches (such as GFP tagging or RNA-level detection methods), the YNL235C antibody enables detection of native, unmodified protein without genetic manipulation of the yeast strain. This provides advantages when studying endogenous protein levels and post-translational modifications. When compared to mass spectrometry approaches, antibody-based detection offers greater sensitivity for low-abundance proteins and is more accessible for laboratories without specialized proteomics equipment. The rabbit-raised polyclonal nature of this antibody likely provides recognition of multiple epitopes on the target protein, potentially offering greater sensitivity than monoclonal antibodies in certain applications .

What are the optimal protocols for using YNL235C antibody in Western blotting?

For optimal Western blotting results with YNL235C antibody:

• Prepare yeast protein extracts using glass bead lysis in buffer containing protease inhibitors

• Load 20-40 μg total protein per lane on 10-12% SDS-PAGE gels

• Transfer proteins to PVDF membrane (0.45 μm pore size)

• Block with 5% non-fat dry milk in TBST for 1 hour at room temperature

• Incubate with YNL235C antibody at 1:1000 dilution in blocking buffer overnight at 4°C

• Wash 3× with TBST for 10 minutes each

• Incubate with HRP-conjugated anti-rabbit secondary antibody (1:5000) for 1 hour

• Wash 3× with TBST for 10 minutes each

• Develop using enhanced chemiluminescence

For difficult-to-detect targets, extend primary antibody incubation to 48 hours at 4°C with gentle agitation to improve signal strength while maintaining specificity .

How should researchers design immunofluorescence experiments with YNL235C antibody?

For effective immunofluorescence with YNL235C antibody:

• Grow yeast to mid-log phase (OD600 0.6-0.8)

• Fix cells with 3.7% formaldehyde for 30 minutes

• Wash 3× with phosphate buffer (pH 7.4)

• Digest cell wall with zymolyase (100 μg/ml) for 20-30 minutes

• Permeabilize with 0.1% Triton X-100 for 10 minutes

• Block with 1% BSA in PBS for 30 minutes

• Incubate with YNL235C antibody (1:200 dilution) overnight at 4°C

• Wash 3× with PBS

• Incubate with fluorophore-conjugated anti-rabbit secondary antibody (1:500)

• Counterstain nuclei with DAPI (1 μg/ml)

• Mount and visualize

Include appropriate controls: (1) secondary antibody only, (2) pre-immune serum, and (3) competitive blocking with recombinant YNL235C protein to validate staining specificity .

What controls are essential when using YNL235C antibody in experimental workflows?

When using YNL235C antibody, implement these essential controls:

• Negative controls:

  • Secondary antibody only (omit primary antibody)

  • Pre-immune serum at equivalent concentration

  • YNL235C deletion strain (if available)

  • Non-relevant rabbit IgG at equivalent concentration

• Positive controls:

  • Overexpression strain for YNL235C

  • Known condition where YNL235C is upregulated

• Validation controls:

  • Peptide competition assay (pre-incubate antibody with excess recombinant YNL235C)

  • Molecular weight verification (expected size of target protein)

  • Subcellular localization consistency with published data

These controls help distinguish specific signals from background and validate antibody performance across different experimental conditions, particularly important when working with yeast extracts that may contain cross-reactive proteins .

How can researchers address weak or absent signals when using YNL235C antibody?

When encountering weak or absent signals with YNL235C antibody:

• Protein extraction optimization:

  • Use harsher lysis conditions (increase mechanical disruption time)

  • Add stronger detergents (up to 1% SDS) in extraction buffer

  • Include additional protease inhibitors to prevent degradation

• Antibody incubation adjustments:

  • Increase antibody concentration (try 1:500 or 1:250 dilutions)

  • Extend incubation time to 48 hours at 4°C

  • Use signal enhancement systems (biotin-streptavidin amplification)

• Sample preparation considerations:

  • Verify growth conditions that optimize YNL235C expression

  • Concentrate proteins using TCA precipitation

  • Minimize freeze-thaw cycles of antibody and sample

• Detection system improvements:

  • Switch to more sensitive detection reagents (femto-level ECL substrates)

  • Use longer exposure times or more sensitive imaging systems

  • Consider tyramide signal amplification for immunofluorescence

Additionally, verify if your yeast strain expresses the protein at detectable levels, as expression can vary with genetic background and growth phase .

What approaches help resolve cross-reactivity issues with YNL235C antibody?

To address cross-reactivity concerns:

• Increase wash stringency:

  • Use higher salt concentration (up to 500 mM NaCl) in wash buffers

  • Add 0.1-0.5% Tween-20 or 0.1% SDS to wash buffers

  • Increase number and duration of wash steps

• Blocking optimization:

  • Try alternative blocking agents (5% BSA instead of milk)

  • Use yeast protein extract from YNL235C deletion strain in blocking buffer

  • Include 0.1% Triton X-100 in blocking and antibody incubation buffers

• Antibody purification:

  • Consider affinity purification against recombinant YNL235C protein

  • Pre-absorb antibody with acetone powder from YNL235C deletion strain

  • Use higher dilutions (1:2000-1:5000) to reduce non-specific binding

• Validation strategies:

  • Compare banding patterns with lysates from YNL235C deletion strains

  • Perform epitope mapping to identify specific binding regions

  • Use mass spectrometry to confirm identity of detected proteins

These approaches help distinguish genuine YNL235C signals from background or cross-reactive proteins, especially important when working in complex yeast extracts .

How should researchers interpret differences in YNL235C detection between experimental conditions?

When analyzing differences in YNL235C detection:

• Quantification controls:

  • Normalize to multiple loading controls (e.g., tubulin, actin, total protein)

  • Use licensed image analysis software with appropriate background subtraction

  • Apply statistical tests appropriate for sample size (t-test, ANOVA)

• Biological interpretation considerations:

  • Account for post-translational modifications that may alter antibody binding

  • Consider changes in protein localization that might affect extraction efficiency

  • Analyze protein stability/half-life under different conditions

• Technical validation:

  • Confirm findings with orthogonal methods (mass spectrometry, RNA expression)

  • Repeat experiments with biological replicates from independent cultures

  • Test dilution series to ensure detection is in linear range

• Advanced analytical approaches:

  • Compare changes in various cellular fractions (cytosolic, nuclear, membrane)

  • Use time-course experiments to distinguish primary from secondary effects

  • Correlate protein levels with functional assays specific to YNL235C

What are the optimal storage conditions for preserving YNL235C antibody activity?

To maintain optimal YNL235C antibody activity:

• Long-term storage:

  • Store at -80°C in small single-use aliquots (20-50 μl) to minimize freeze-thaw cycles

  • Include 30-50% glycerol in storage buffer for cryoprotection

  • Add preservatives (0.02% sodium azide) to prevent microbial growth

• Working stock handling:

  • Keep working dilution at 4°C for up to 2 weeks with 0.02% sodium azide

  • Return stock solution to -20°C immediately after use

  • Avoid more than 5 freeze-thaw cycles for any single aliquot

• Shipping and temporary storage:

  • Transport on dry ice for shipments longer than 24 hours

  • Store temporarily at 4°C for up to one week if necessary

  • Avoid room temperature exposure for more than 8 hours cumulative

• Stability monitoring:

  • Test activity periodically against a standard sample

  • Document lot-to-lot variation in titer and specificity

  • Consider carrier proteins (BSA at 1 mg/ml) for dilute antibody solutions

Following these guidelines helps maintain antibody activity and specificity, particularly important for the YNL235C antibody which should be stored at -20°C or -80°C and protected from repeated freeze-thaw cycles .

How can researchers extend the usable lifetime of YNL235C antibody preparations?

To maximize YNL235C antibody lifespan:

• Aliquoting strategy:

  • Create multiple small aliquots (10-25 μl) immediately upon receipt

  • Use screw-cap microcentrifuge tubes with O-rings to prevent evaporation

  • Label tubes with antibody concentration, date, and minimal freeze-thaw data

• Buffer optimization:

  • Add stabilizing proteins (ultrapure BSA at 1-5 mg/ml)

  • Include cryoprotectants (10-15% glycerol) to prevent freezing damage

  • Adjust pH to optimal stability range (pH 7.2-7.4)

• Contamination prevention:

  • Use sterile technique when handling antibody solutions

  • Filter solutions through 0.22 μm filters before aliquoting

  • Use clean pipette tips and tubes dedicated for antibody handling

• Usage practices:

  • Centrifuge vials briefly before opening to collect solution

  • Allow to warm only to 4°C before use, never to room temperature

  • Return to -20°C immediately after use

  • Document freeze-thaw cycles for each aliquot

Implementing these practices can significantly extend antibody shelf-life from the standard 1-2 years to 3+ years while maintaining consistent experimental results .

How does YNL235C antibody performance compare across different experimental techniques?

Performance comparison across techniques:

The YNL235C antibody typically performs strongest in Western blot applications, where specific bands can be distinguished by molecular weight. Immunofluorescence requires careful optimization of fixation and permeabilization methods to maintain yeast cell morphology while allowing antibody access. For immunoprecipitation, crosslinking the antibody to beads often improves yields and reduces background compared to traditional protein A/G bead capture methods .

What recent advances in antibody technology could enhance YNL235C research?

Recent technological advances applicable to YNL235C research include:

• Fragment-based antibody engineering:

  • Nanobody technology, similar to that used in HIV research, could create smaller YNL235C-binding fragments with enhanced penetration into yeast cells

  • Single-domain antibodies may provide access to epitopes traditionally difficult to reach in native protein conformations

• AI-assisted antibody design:

  • Machine learning approaches like MAGE (Monoclonal Antibody GEnerator) could potentially design optimized YNL235C antibodies with improved specificity

  • Computational epitope mapping could identify unique regions of YNL235C for more specific targeting

• Advanced detection systems:

  • Proximity ligation assays could enhance detection of YNL235C protein interactions

  • CRISPR-based tagging systems paired with antibody detection for multiplexed protein visualization

• Quantitative improvements:

  • Calibrated antibody standards similar to those used in vaccine research could improve quantification consistency

  • Reference materials with defined YNL235C concentrations would enable absolute rather than relative quantification

These innovations, adapted from fields such as HIV and COVID-19 research, could significantly advance our understanding of YNL235C biology by providing more sensitive and specific detection methods .

How should researchers integrate YNL235C antibody data with other yeast protein analysis methods?

For comprehensive YNL235C research, integrate antibody data with:

• Multi-omics integration strategies:

  • Correlate protein levels (antibody detection) with transcriptomics (RNA-seq) to identify regulatory mechanisms

  • Compare antibody-detected localization with GFP fusion localization studies

  • Integrate with mass spectrometry data for identification of post-translational modifications

  • Correlate with metabolomic changes in YNL235C mutant strains

• Methodological triangulation:

  • Confirm antibody-based findings with orthogonal techniques (e.g., CRISPR tagging, MS/MS verification)

  • Use epitope-tagged versions of YNL235C with commercial tag antibodies as validation

  • Compare immunoprecipitation results with yeast two-hybrid or BioID proximity labeling

• Systems biology approaches:

  • Map antibody-detected protein changes onto known yeast interaction networks

  • Create mathematical models integrating antibody-quantified protein levels with functional assays

  • Use dynamical modeling to predict protein behavior under conditions difficult to test experimentally

• Standardization considerations:

  • Establish reference samples with known YNL235C content for cross-experimental normalization

  • Document detailed metadata about antibody lot, dilution, and detection methods

  • Use distributed control samples across multiple laboratories for method validation

This integrative approach provides richer insight into YNL235C biology than any single method alone and helps identify technical artifacts versus genuine biological phenomena .