TMA17 Antibody

What is TMA17 Antibody and what organism is it derived from?

TMA17 Antibody (such as product code CSB-PA621498XA01SVG) is a polyclonal antibody raised in rabbits against recombinant Saccharomyces cerevisiae (strain ATCC 204508 / S288c, Baker's yeast) TMA17 protein . It's specifically designed for research applications and should not be used in diagnostic or therapeutic procedures. As a polyclonal antibody, it contains a heterogeneous mixture of antibodies that recognize multiple epitopes on the TMA17 protein, offering potentially broader recognition capabilities compared to monoclonal alternatives.

What applications is TMA17 Antibody validated for?

According to product information, TMA17 Antibody has been validated for ELISA (Enzyme-Linked Immunosorbent Assay) and Western Blot (WB) applications to ensure identification of the antigen . When designing experiments, researchers should consider that antibody performance can vary based on experimental conditions, sample preparation methods, and detection systems used. Preliminary validation experiments should be performed for each specific application, following principles similar to those used for other research antibodies .

What is the target of TMA17 Antibody?

TMA17 Antibody targets the TMA17 protein (Uniprot No. Q12513) from Saccharomyces cerevisiae . TMA17 (Translation Machinery-Associated protein 17) is involved in proteasome assembly and regulation in yeast. Understanding this protein's function provides insights into protein quality control mechanisms and stress responses, with potential parallels to similar systems in higher eukaryotes.

How should I optimize western blot protocols when using TMA17 Antibody?

For optimal western blot results with TMA17 Antibody:

• Sample preparation:

  • Use fresh yeast lysates prepared with protease inhibitors

  • Denature samples in SDS buffer at 95°C for 5 minutes

• Gel electrophoresis:

  • Use 12-15% SDS-PAGE gels for better resolution of TMA17

  • Include positive control (recombinant TMA17) and negative control samples

• Transfer conditions:

  • Semi-dry transfer: 15V for 30 minutes or wet transfer at 100V for 1 hour

  • Use PVDF membrane with 0.2 μm pore size for smaller proteins

• Blocking:

  • 5% non-fat milk or 3% BSA in TBST for 1 hour at room temperature

  • Test both blockers to determine which gives lower background

• Antibody incubation:

  • Start with 1:1000 dilution in blocking buffer (in 50% Glycerol, 0.01M PBS, pH 7.4)

  • Incubate overnight at 4°C with gentle agitation

  • Perform a dilution series (1:500-1:5000) to determine optimal concentration

• Detection:

  • Use HRP-conjugated secondary anti-rabbit antibody

  • Consider chemiluminescent detection for sensitivity or fluorescent detection for quantification

Similar optimization principles apply to other antibodies, with careful attention to specificity validation .

What controls should be used when performing immunofluorescence with TMA17 Antibody?

When performing immunofluorescence with TMA17 Antibody, include these essential controls:

• Primary controls:

  • Positive control: Wild-type yeast cells expressing TMA17

  • Negative control: TMA17 knockout yeast strain

  • Pre-immune serum control: To assess background signal

  • Peptide competition control: Pre-incubate antibody with blocking peptide

• Secondary antibody controls:

  • No primary antibody control: Assess non-specific binding of secondary antibody

  • Isotype control: Use irrelevant rabbit polyclonal IgG

• Sample preparation controls:

  • Fixation control: Test different fixatives (paraformaldehyde vs. methanol)

  • Permeabilization control: Optimize detergent type and concentration

• Colocalization markers:

  • Use established markers for expected subcellular localization

  • For TMA17, consider proteasome markers

These comprehensive controls follow principles of rigorous antibody validation that apply broadly in research settings .

How can I validate the specificity of TMA17 Antibody in my experimental system?

To validate TMA17 Antibody specificity in your experimental system:

• Genetic validation:

  • Compare wild-type with TMA17 knockout strain

  • Use TMA17 overexpression systems

  • Test in strains with tagged TMA17 (e.g., TMA17-GFP)

• Biochemical validation:

  • Western blot analysis showing single band at expected molecular weight

  • Immunoprecipitation followed by mass spectrometry identification

  • Pre-adsorption test: Pre-incubate antibody with purified antigen before use

• Cross-reactivity assessment:

  • Test in related species to determine evolutionary conservation

  • Examine cross-reactivity with similar proteins (bioinformatic prediction)

• Orthogonal detection methods:

  • Compare results with different detection technologies

  • Use an alternative antibody targeting a different epitope of TMA17

These validation principles align with general antibody validation methodologies described in current research literature .

How can TMA17 Antibody be used to study proteasome regulation in yeast?

TMA17 Antibody provides researchers with a valuable tool for investigating proteasome regulation in yeast, with several advanced applications:

• Stress response studies:

  • Monitor TMA17 protein levels during various stress conditions

  • Correlate TMA17 expression with proteasome assembly and activity

  • Time-course experiments to track TMA17 dynamics during stress adaptation

• Proteasome assembly analysis:

  • Co-immunoprecipitation to identify TMA17 interaction partners during assembly

  • Sucrose gradient fractionation combined with western blotting to analyze TMA17 association with proteasome intermediates

  • Immunofluorescence to track TMA17 localization during proteasome assembly

• Regulatory pathway investigation:

  • Examine TMA17 phosphorylation status using phosphatase treatments

  • Analyze TMA17 stability and turnover through cycloheximide chase experiments

  • Identify transcription factors regulating TMA17 expression

This approach is conceptually similar to studies of other proteasome-related proteins and their involvement in cellular stress responses, like those described for TMEM176B in immunoregulation .

What role does TMA17 play in stress response mechanisms?

TMA17's role in stress response mechanisms can be systematically investigated using TMA17 Antibody:

• Expression dynamics during stress conditions:

  • Quantitative western blot analysis can reveal TMA17 level changes during:

    • Heat shock

    • Oxidative stress

    • ER stress

    • Nutrient limitation

• Subcellular redistribution:

  • Under normal conditions: primarily cytoplasmic

  • During stress: potential co-localization with proteasome assembly centers

  • Stress recovery: return to normal distribution pattern

• Proteostasis network:

  • Functions in concert with other proteasome assembly chaperones

  • May coordinate with heat shock proteins

• Post-translational modifications:

  • Phosphorylation status changes under stress conditions

  • Potential ubiquitination sites regulating stability

This approach parallels methodologies used to study stress-responsive proteins in other systems, similar to approaches used with transmembrane proteins like TMEM176B in immune regulation contexts .

How can TMA17 Antibody be used in comparative studies across yeast species?

For comparative analysis of TMA17 across yeast species:

Key experimental considerations:

• Sequence homology analysis prior to experimental validation

• Increased antibody concentration for distantly related species

• More stringent washing for cross-species applications

• Validation with genetic knockouts when available

• Optimization of sample preparation for each species

Comparative approaches can provide evolutionary insights into TMA17 function, similar to cross-species antibody validation methods used in other research contexts .

What are common causes of non-specific binding when using TMA17 Antibody?

Common causes of non-specific binding with TMA17 Antibody and troubleshooting strategies:

• Insufficient blocking:

  • Problem: Inadequate blocking allows antibody to bind non-specifically

  • Solution: Increase blocking time (2 hours minimum), test different blockers (milk vs. BSA), increase blocker concentration (5-10%)

• Cross-reactivity with similar proteins:

  • Problem: TMA17 antibody recognizes epitopes shared with other yeast proteins

  • Solution: Pre-adsorb antibody with lysate from TMA17 knockout strain, use peptide competition, increase antibody dilution

• Sample preparation issues:

  • Problem: Incomplete protein denaturation or aggregation

  • Solution: Optimize lysis conditions, increase SDS concentration, ensure complete heating during sample preparation

• Secondary antibody problems:

  • Problem: Non-specific binding of secondary antibody

  • Solution: Include secondary-only control, increase washing stringency, try different secondary antibody

These troubleshooting approaches follow general principles applicable to research antibodies, with careful validation of specificity being critical, as emphasized in contemporary antibody-based research methodologies .

How can I address inconsistent results when using TMA17 Antibody in different experiments?

Addressing inconsistent results with TMA17 Antibody requires systematic investigation:

• Antibody storage and handling:

  • Problem: Antibody degradation from improper storage

  • Solution: Aliquot antibody to minimize freeze-thaw cycles, store at -20°C or -80°C for long term, use glycerol stocks (50% glycerol as in the original formulation)

• Sample preparation variability:

  • Problem: Inconsistent extraction efficiency or protein degradation

  • Solution: Standardize lysis protocol, use fresh protease inhibitors, compare different lysis methods, process all samples simultaneously

• Experimental conditions standardization:

  • Problem: Variations in temperature, incubation time, buffer composition

  • Solution: Create detailed protocol with precise timing, temperature control, and buffer preparation instructions

• Cell/culture variations:

  • Problem: Differences in growth phase, media composition, or strain background

  • Solution: Harvest cells at consistent OD600, use single media preparation, maintain consistent growth conditions

• Lot-to-lot antibody variations:

  • Problem: Manufacturing differences between antibody batches

  • Solution: Validate each new lot, maintain reference sample for comparison

These approaches to ensuring experimental reproducibility are consistent with best practices in antibody-based research .

What techniques can be used to confirm TMA17 antibody specificity?

Multiple orthogonal techniques to confirm TMA17 antibody specificity:

• Genetic approaches:

  • Knockout validation: Compare wild-type and TMA17 knockout samples

  • Overexpression validation: Compare empty vector with TMA17 overexpression

  • Tagged protein comparison: Compare TMA17 antibody staining with epitope tag antibody

• Biochemical approaches:

  • Immunoprecipitation-Mass Spectrometry: Perform IP with TMA17 antibody, analyze by MS

  • Peptide competition: Pre-incubate antibody with immunizing peptide

  • Epitope mapping: Test antibody against overlapping peptides covering TMA17 sequence

• Multiple antibody comparison:

  • Use antibodies raised against different epitopes of TMA17

  • Compare detection patterns across antibodies

• Cross-species validation:

  • Test antibody against TMA17 homologs in related species

  • Correlate signal strength with sequence conservation

These validation approaches are similar to contemporary methods used to validate antibody specificity in research contexts, as described in literature about antibody validation methodologies .

What are the optimal storage conditions for maintaining TMA17 Antibody activity?

Optimal storage conditions for TMA17 Antibody to maintain long-term activity:

• Temperature requirements:

  • Long-term storage: -20°C or -80°C

  • Working aliquots: -20°C

  • Avoid storing at 4°C for more than 1-2 weeks

  • Never store at room temperature

• Aliquoting strategy:

  • Create single-use aliquots upon receipt

  • Use sterile microcentrifuge tubes with secure seals

  • Label with antibody name, lot number, date, and dilution

  • Calculate volume needed for typical experiment to minimize waste

• Buffer composition:

  • Standard storage: 50% glycerol, 0.01M PBS (pH 7.4), 0.03% Proclin 300

  • Alternative preservatives if needed: 0.02% sodium azide (NaN₃)

• Physical handling:

  • Minimize freeze-thaw cycles

  • Thaw on ice rather than at room temperature

  • Centrifuge briefly after thawing to collect contents

  • Use sterile technique to prevent contamination

These storage recommendations align with standard practices for maintaining antibody activity in research settings.

How stable is TMA17 Antibody after multiple freeze-thaw cycles?

TMA17 Antibody stability decreases progressively with multiple freeze-thaw cycles:

• Freeze-thaw impact assessment:

  • Each freeze-thaw cycle potentially reduces activity by 5-15%

  • After 5 cycles, significant reduction in signal-to-noise ratio may occur

  • Background may increase as antibody undergoes partial denaturation

• Mechanism of freeze-thaw damage:

  • Ice crystal formation disrupts antibody structure

  • Protein denaturation at ice-liquid interfaces

  • Aggregation of partially denatured antibodies

  • Oxidation of sensitive amino acid residues

• Mitigating freeze-thaw damage:

  • Add cryoprotectants: The 50% glycerol in the storage buffer helps protect the antibody

  • Slow freezing rate: Place at -20°C before transferring to -80°C

  • Thaw completely but quickly: Ice bath rather than room temperature

  • Centrifuge briefly after thawing: 10,000g for 30 seconds

• Activity monitoring approaches:

  • Standard curve comparison with fresh antibody

  • Signal-to-noise ratio assessment

  • Dilution series to determine effective concentration

These stability considerations apply broadly to antibody reagents in research settings.

What buffer conditions are optimal for TMA17 Antibody functionality?

Optimal buffer conditions for TMA17 Antibody functionality across different applications:

• Storage buffer:

  • 50% Glycerol, 0.01M PBS, pH 7.4, with 0.03% Proclin 300 as preservative

• Application-specific buffer conditions:

• Buffer components to avoid:

  • Strong detergents (SDS) can denature antibodies

  • High salt (>500 mM) can reduce binding affinity

  • Extreme pH (<6.0 or >8.5) can irreversibly damage antibody

  • High concentrations of reducing agents (DTT, BME)

• Buffer optimization experiment design:

  • Perform testing of critical variables (pH, salt, detergent)

  • Include positive and negative controls

  • Test signal-to-noise ratio rather than absolute signal

  • Validate optimal conditions across multiple experiments

These buffer optimization principles are consistent with general antibody handling best practices in research laboratories.