SLC25A6 Antibody

What is SLC25A6 and why is it important in research?

SLC25A6, also known as adenine nucleotide translocase 3 (ANT3), is a member of the solute carrier family 25, specifically the mitochondrial carrier subfamily. It plays a crucial role in mitochondrial energy production by facilitating the exchange of cytoplasmic ADP with mitochondrial ATP across the inner mitochondrial membrane . Recent research has demonstrated its involvement in QTc interval regulation, with significant implications for cardiac function research . SLC25A6 may also participate in the formation of the permeability transition pore complex (PTPC) responsible for releasing mitochondrial products that trigger apoptosis .

What is the expected molecular weight for SLC25A6 in Western blot analysis?

When performing Western blot analysis of SLC25A6, researchers should expect to observe bands at approximately 30-33 kDa . The calculated molecular weight based on amino acid sequence is 33 kDa, but post-translational modifications or processing can result in slight variations in the observed weight. When validating a new antibody, comparing your results to this expected range is essential for confirming target specificity.

Which cell lines and tissues are recommended as positive controls for SLC25A6 detection?

Based on validated experimental data, the following samples can serve as reliable positive controls:

For Western blot applications specifically, human liver tissue, human heart tissue, and human placenta tissue have been extensively validated .

What sample preparation methods are most effective for SLC25A6 detection?

For optimal SLC25A6 detection, consider these preparation methods by application type:

For Western Blot:

• Lyse cells or tissues in RIPA buffer containing protease inhibitors

• Use 30-50 μg of total protein per lane

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

For Immunohistochemistry:

• For paraffin-embedded tissues, antigen retrieval with TE buffer pH 9.0 is recommended

• Alternatively, citrate buffer pH 6.0 can be used for antigen retrieval

• Use 5 μm sections for optimal antibody penetration

For Immunofluorescence:

• Fix cells in 4% paraformaldehyde for 15 minutes at room temperature

• Permeabilize with 0.1-0.5% Triton X-100 in PBS

• Block with 1-5% BSA or normal serum prior to antibody incubation

How do I choose between monoclonal and polyclonal antibodies for SLC25A6 detection?

The choice between monoclonal and polyclonal antibodies depends on your specific research needs:

Monoclonal Antibodies (e.g., clone 4B9):

• Advantages: Higher specificity, consistent lot-to-lot performance, ideal for quantitative applications

• Best for: Applications requiring high specificity, where cross-reactivity with other ANT isoforms must be minimized

• Available products: SAB1403551 (mouse monoclonal, clone 4B9)

Polyclonal Antibodies:

• Advantages: Recognize multiple epitopes, potentially higher sensitivity, better for detecting denatured proteins

• Best for: Initial characterization studies, detection of native proteins, applications where signal amplification is needed

• Available products: ABIN6970325, 51031-1-AP, ab230545, DF3742, ABIN1682768

When choosing, consider cross-reactivity with other ANT isoforms, especially if working with tissues expressing multiple transporter subtypes.

What are the recommended dilutions for different applications of SLC25A6 antibodies?

Optimal antibody dilutions vary by application and specific antibody. The table below summarizes recommended ranges:

Always perform a dilution series to determine optimal conditions for your specific experimental system.

How can I validate the specificity of an SLC25A6 antibody?

To ensure antibody specificity for SLC25A6:

• Positive and negative controls:

  • Use tissues/cells known to express SLC25A6 (human heart, liver) as positive controls

  • Include knockdown or knockout models as negative controls when possible

• Multiple detection methods:

  • Confirm results using at least two different techniques (e.g., WB and IHC)

  • Verify that the observed molecular weight matches the expected 30-33 kDa range

• Peptide competition assay:

  • Pre-incubate antibody with immunizing peptide

  • Specific binding should be blocked in the presence of the competing peptide

• Cross-reactivity assessment:

  • Test antibody against related ANT isoforms (SLC25A4/ANT1, SLC25A5/ANT2)

  • Confirm specificity using recombinant proteins if available

• Literature validation:

  • Compare your results with published data

  • Review citations that have used the same antibody

How can I optimize co-immunoprecipitation protocols to study SLC25A6 interactions?

For successful co-immunoprecipitation (Co-IP) of SLC25A6 and its interaction partners:

• Lysis buffer optimization:

  • Use gentle, non-denaturing buffers (e.g., 20 mM HEPES pH 7.4, 150 mM NaCl, 1% CHAPS or digitonin)

  • Avoid harsh detergents like SDS that disrupt protein-protein interactions

  • Include protease/phosphatase inhibitors and maintain cold temperatures

• Antibody selection:

  • Use antibodies validated for IP applications, such as 14841-1-AP

  • Recommended amount: 0.5-4.0 μg antibody per 1.0-3.0 mg of total protein lysate

• Pre-clearing step:

  • Pre-clear lysate with protein A/G beads to reduce non-specific binding

  • Incubate for 1 hour at 4°C with gentle rotation

• Immunoprecipitation:

  • Incubate pre-cleared lysate with anti-SLC25A6 antibody overnight at 4°C

  • Add fresh protein A/G beads and incubate for 1-3 hours

  • Wash 4-5 times with wash buffer containing reduced detergent

• Control experiments:

  • Include IgG control from the same species as the antibody

  • Perform reverse Co-IP to confirm interaction

  • Consider crosslinking if the interaction is transient

• Technical considerations:

  • For mitochondrial membrane proteins like SLC25A6, membrane solubilization is critical

  • Digitonin (0.5-1%) often works better than Triton X-100 for maintaining mitochondrial protein complexes

What strategies help distinguish between SLC25A6 (ANT3) and other adenine nucleotide translocator isoforms?

Differentiating between ANT isoforms requires careful experimental design:

• Antibody selection:

  • Choose antibodies raised against unique regions of SLC25A6

  • Verify specificity through manufacturer cross-reactivity data

  • Some antibodies like 51031-1-AP have been validated for specificity

• Molecular techniques:

  • Use isoform-specific primers for RT-qPCR validation

  • Consider supporting antibody results with mRNA expression data

  • Design siRNA knockdown experiments targeting unique regions

• Expression pattern analysis:

  • SLC25A6 shows sex-biased expression (higher in males)

  • Compare expression patterns across tissues with known differential isoform expression

• Functional assays:

  • ANT isoforms show different sensitivities to inhibitors like atractyloside and bongkrekic acid

  • Combine functional assays with immunodetection for comprehensive identification

• Mass spectrometry:

  • Identify isoform-specific peptides by MS following immunoprecipitation

  • This approach can distinguish between highly homologous proteins

How does SLC25A6 expression correlate with QTc interval changes in cardiac research?

Recent research has established a significant relationship between SLC25A6 and cardiac QTc intervals:

• Expression-function correlation:

  • A significant negative correlation exists between SLC25A6 expression and QTc interval duration

  • Individuals with higher SLC25A6 expression (e.g., males, Klinefelter syndrome patients) show shorter QTc intervals

  • Those with lower expression (e.g., Turner syndrome patients) show longer QTc intervals

• Experimental models:

  • Zebrafish models confirm these findings: downregulation of slc25a6 increased QTc interval duration

  • Pharmacological inhibition of KATP channels restored systolic duration in these models

  • Conversely, SLC25A6 overexpression shortened QTc intervals

• Methodology for studying this correlation:

  • Quantify SLC25A6 expression using qPCR or Western blot

  • Correlate with ECG measurements of QTc intervals

  • Consider sex chromosome disorders (Turner syndrome, Klinefelter syndrome) as natural models

  • RNA sequencing confirms consistency of expression patterns across blood, muscle, and aorta tissues

• Mechanistic considerations:

  • SLC25A6 likely modifies intracellular ADP/ATP ratios through its translocase activity

  • KATP channels appear to be downstream effectors in this pathway

  • Pharmacological KATP channel modulators (glybenclamide, pinacidil) can normalize QTc changes

What are common challenges in SLC25A6 detection and how can they be addressed?

How can I optimize SLC25A6 antibody-based immunohistochemistry protocols?

For optimal IHC results when detecting SLC25A6:

• Tissue preparation:

  • Fix tissues in 10% neutral-buffered formalin for 24-48 hours

  • Use 5 μm sections on positively charged slides

  • Ensure complete deparaffinization and rehydration

• Antigen retrieval:

  • Primary recommendation: TE buffer pH 9.0 (10 mM Tris, 1 mM EDTA)

  • Alternative method: Citrate buffer pH 6.0

  • Heat-induced epitope retrieval: 95-98°C for 15-20 minutes

• Blocking:

  • Block endogenous peroxidase with 3% H₂O₂ in methanol for 10 minutes

  • Protein block with 5% normal serum (from same species as secondary antibody)

  • Include 1% BSA in blocking solution to reduce background

• Antibody incubation:

  • Starting dilution: 1:100 for most SLC25A6 antibodies

  • Optimize with dilution series (1:20, 1:50, 1:100, 1:200, 1:500)

  • Incubate overnight at 4°C in a humidity chamber

• Detection and visualization:

  • Use a polymer-based detection system for enhanced sensitivity

  • DAB development: Monitor under microscope for optimal signal

  • Counterstain with hematoxylin for 30-60 seconds

• Controls:

  • Positive tissue controls: Human skeletal muscle, heart, kidney, and liver

  • Negative controls: Omit primary antibody but include all other steps

What considerations are important when using SLC25A6 antibodies for studying mitochondrial permeability transition?

When investigating SLC25A6's role in mitochondrial permeability transition pore (mPTP) formation:

• Sample preparation considerations:

  • Isolate intact mitochondria using gentle differential centrifugation

  • Maintain mitochondrial membrane integrity by avoiding harsh detergents

  • Use sucrose-based isolation buffers with low EDTA concentration

• Experimental design:

  • Combine antibody-based detection with functional mPTP assays

  • Monitor calcium retention capacity alongside SLC25A6 detection

  • Consider cyclophilin D co-localization studies, as it interacts with mPTP components

• Critical technical aspects:

  • Preserve native protein complexes using mild crosslinking (0.5-1% formaldehyde)

  • For membrane proteins like SLC25A6, digitonin (0.5-1%) often preserves interactions better than Triton X-100

  • Blue native PAGE may be superior to SDS-PAGE for studying intact complexes

• Methodological approach:

  • Use co-immunoprecipitation to identify SLC25A6 interaction partners

  • Employ proximity ligation assays to confirm direct protein interactions in situ

  • Combine with calcium-induced swelling assays to correlate protein interactions with function

• Validation strategies:

  • Pharmacological validation using known mPTP modulators (cyclosporin A, bongkrekic acid)

  • Genetic approaches (siRNA knockdown of SLC25A6) to confirm functional relevance

  • Combination of biochemical, imaging, and electrophysiological approaches for comprehensive analysis