C47E8.4 Antibody

What are the validated applications for the C47E8.4 antibody?

The C47E8.4 antibody has been validated for several research applications, primarily:

• Enzyme-Linked Immunosorbent Assay (ELISA)

• Western Blotting (WB)

These applications have been verified to ensure proper identification of the target antigen. While these represent the primary validated uses, researchers may explore additional applications such as immunohistochemistry or immunofluorescence, particularly using the polyacrylamide embedding technique for whole-mount C. elegans preparations .

How should the C47E8.4 antibody be stored to maintain optimal activity?

For optimal preservation of antibody activity, the C47E8.4 antibody should be stored at -20°C or -80°C immediately upon receipt . Repeated freeze-thaw cycles should be strictly avoided as they can lead to protein denaturation and loss of binding activity. The antibody is supplied in a liquid form with a storage buffer containing 0.03% Proclin 300 as a preservative, 50% glycerol, and 0.01M PBS at pH 7.4 . This formulation helps maintain stability during storage. For working solutions, aliquoting the antibody into smaller volumes before freezing is recommended to minimize freeze-thaw cycles when conducting repeated experiments.

What is the most effective protocol for immunostaining C. elegans with C47E8.4 antibody?

An optimized protocol for immunostaining C. elegans with antibodies like C47E8.4 involves a gel-based immobilization method combined with chemical and enzymatic permeabilization:

• Harvest 200-500 worms in S-buffer or M9 buffer

• Wash worms twice to remove residual bacteria

• Fix worms in 60% isopropanol for at least 10 minutes

• Wash three times with 0.5% PBS-T followed by PBS

• Immobilize worms in polyacrylamide by incubating in monomer solution at 4°C for ≥1 hour

• Mount on slides and proceed with permeabilization

• Apply primary antibody (C47E8.4 antibody) at appropriate dilution

• Wash and apply fluorescently-labeled secondary antibody

• Perform final washes and imaging

This protocol enables whole-body immunostaining while maintaining the structural integrity of the worm, unlike traditional methods such as freeze-cracking or dissection .

How does fixation affect C47E8.4 antibody binding and what are the optimal fixation conditions?

Fixation is a critical step that significantly impacts antibody binding to C47E8.4. Different fixatives can alter protein structure and epitope accessibility:

• Isopropanol fixation (60%) is recommended for general antibody compatibility and has been successfully used in C. elegans immunostaining protocols

• The fixation duration should be at least 10 minutes, but can be extended for longer periods

• Fixation effects on antigenicity vary between antibodies, so optimization may be necessary

• Fixed samples can be stored at -20°C in 60% isopropanol for at least a month without significant loss of antigenicity

It's important to note that the optimal fixation condition may need to be adjusted based on the specific characteristics of your C47E8.4 antibody and the cellular localization of the target protein.

What permeabilization techniques are most effective when using C47E8.4 antibody while preserving tissue morphology?

Effective permeabilization is essential for allowing C47E8.4 antibody access to its target while maintaining tissue integrity. The polyacrylamide embedding method offers significant advantages:

• Chemical permeabilization using 0.5% PBS-T (PBS with Triton X-100) provides initial cuticle disruption

• Enzymatic permeabilization can be added for enhanced antibody penetration

• The polyacrylamide gel immobilization prevents distortion or damage to the worm's body during permeabilization

• This combined approach enables immunostaining across the whole body of well-preserved C. elegans

This method overcomes a major barrier in C. elegans immunostaining - permeabilizing the tough cuticle without compromising morphological integrity, which is particularly important for studying spatially-restricted expression patterns of proteins like C47E8.4.

How can researchers troubleshoot weak or absent signal when using C47E8.4 antibody?

When encountering weak or absent signals with C47E8.4 antibody, consider the following systematic troubleshooting approaches:

• Antibody concentration: Adjust the primary antibody dilution; the optimal working concentration may need optimization from batch to batch

• Permeabilization efficiency: Insufficient permeabilization of the C. elegans cuticle is a common issue; extend permeabilization time or try alternative permeabilization reagents

• Epitope accessibility: The fixation method may mask the epitope; test alternative fixation protocols

• Antibody quality: Verify antibody activity with positive controls; antibodies stored improperly may lose activity

• Detection system: Ensure secondary antibody is compatible and functional; try signal amplification methods

Each step should be systematically tested and controlled to identify the limiting factor in the experimental setup.

What controls are essential when performing experiments with C47E8.4 antibody?

Rigorous controls are critical for interpreting C47E8.4 antibody results:

• Positive controls:

  • Samples with known expression of C47E8.4 protein

  • Recombinant C47E8.4 protein for Western blotting

• Negative controls:

  • Omission of primary antibody to assess secondary antibody specificity

  • Pre-immune serum controls

  • C47E8.4 knockdown or knockout samples when available

• Specificity controls:

  • Pre-absorption of antibody with purified antigen

  • Comparison with alternative antibodies against the same target

  • Multiple detection methods (e.g., ELISA confirmation of Western blot results)

These controls help validate that the observed signals truly represent C47E8.4 protein rather than experimental artifacts.

How can C47E8.4 antibody be used in co-immunoprecipitation and other advanced applications?

For co-immunoprecipitation (co-IP) and other advanced applications with C47E8.4 antibody:

• Co-IP protocol:

  • Prepare C. elegans lysate under non-denaturing conditions

  • Pre-clear lysate with protein A/G beads

  • Incubate with C47E8.4 antibody (which is affinity-purified and suitable for immunoprecipitation)

  • Capture antibody-protein complexes with protein A/G beads

  • Wash stringently and elute

  • Analyze by Western blotting for interacting proteins

• Additional advanced applications:

  • ChIP (Chromatin Immunoprecipitation): If C47E8.4 has DNA-binding properties

  • Proximity ligation assay: For detecting protein-protein interactions in situ

  • Super-resolution microscopy: For detailed subcellular localization studies

The polyclonal nature of the available C47E8.4 antibody makes it potentially suitable for recognizing multiple epitopes, which can be advantageous in precipitation techniques.

What are the best practices for quantifying C47E8.4 expression across developmental stages or experimental conditions?

For rigorous quantification of C47E8.4 expression:

• Western blot quantification:

  • Always include loading controls (e.g., actin, tubulin)

  • Use purified recombinant C47E8.4 protein to create a standard curve

  • Employ digital image analysis software for densitometry

  • Normalize signal to total protein using stain-free gels or similar approaches

• Immunofluorescence quantification:

  • Maintain identical acquisition parameters across all samples

  • Include internal reference standards in each image

  • Use automated analysis algorithms to avoid bias

  • Report intensity values relative to control samples or reference structures

• Statistical considerations:

  • Perform experiments with at least three biological replicates

  • Apply appropriate statistical tests based on data distribution

  • Report both effect size and statistical significance

  • Consider power analysis to determine adequate sample sizes

These approaches ensure that differences in C47E8.4 expression are accurately quantified and interpreted.

How should subcellular localization of C47E8.4 be interpreted in different tissues?

Interpreting subcellular localization of C47E8.4 requires:

• Co-localization studies:

  • Use established markers for specific organelles or subcellular compartments

  • Calculate co-localization coefficients (e.g., Pearson's, Manders')

  • Employ super-resolution techniques for detailed localization studies

• Tissue-specific considerations:

  • Be aware that localization may vary between tissues

  • Compare with known expression patterns from transcriptomic data

  • Consider tissue-specific binding partners that may affect localization

• Validation approaches:

  • Confirm patterns with GFP-tagged C47E8.4 in transgenic animals

  • Use fractionation studies to biochemically verify subcellular distribution

  • Compare results from multiple fixation and permeabilization methods

Accurate interpretation requires considering both the biological context and technical limitations of immunostaining methods.

What are the technical specifications of commercially available C47E8.4 antibodies?

The commercially available C47E8.4 antibody has the following specifications:

This technical information is crucial for researchers to properly plan experiments and interpret results when working with this antibody .

How does the polyacrylamide embedding method improve antibody penetration and signal quality in C. elegans?

The polyacrylamide embedding method offers several significant advantages for immunostaining C. elegans with antibodies like C47E8.4:

• Immobilization benefits:

  • Maintains structural integrity of the worm during permeabilization

  • Prevents tissue distortion that commonly occurs with freeze-cracking methods

  • Allows for consistent and even permeabilization across the entire specimen

• Improved antibody accessibility:

  • Facilitates penetration of antibodies through the tough cuticle

  • Enables whole-body immunostaining rather than restricted regions

  • Preserves cellular and subcellular structures for accurate localization studies

• Protocol flexibility:

  • Compatible with different fixatives depending on epitope sensitivity

  • Allows for customization of permeabilization reagents and durations

  • Can be modified for use with various molecular readouts beyond antibodies

This method represents a significant advance over traditional techniques, enabling more reliable and comprehensive analysis of protein expression and localization in C. elegans.