thnsl2 Antibody

What is THNSL2 and what is its biological function?

THNSL2 (threonine Synthase-Like 2) is a 484 amino acid protein belonging to the threonine synthase family with a molecular weight of approximately 54 kDa. It functions as a catabolic phospho-lyase on both gamma- and beta-phosphorylated substrates, utilizing pyridoxal phosphate as a cofactor . THNSL2 specifically degrades O-phospho-threonine (PThr) to alpha-ketobutyrate, ammonia, and phosphate . The protein is also known by several alternative names including SOFAT (Secreted osteoclastogenic factor of activated T-cells), TSH2, and THS2 . The gene encoding THNSL2 is located on human chromosome 2p11.2, which comprises approximately 8% of the human genome .

What are the common applications for THNSL2 antibodies in research?

THNSL2 antibodies are validated for multiple research applications, with the most common being:

• Western Blotting (WB): Used for protein quantification and molecular weight confirmation

• Immunohistochemistry (IHC): For tissue localization studies

• Immunofluorescence (IF): For cellular localization and co-localization studies

• Flow Cytometry (FACS): For quantifying THNSL2 expression in cell populations

• Enzyme-Linked Immunosorbent Assay (ELISA): For quantitative measurement of THNSL2 in solutions

Researchers should note that each antibody has specific validated applications, and optimal working dilutions should be determined experimentally for each research context .

What species reactivity can be expected from available THNSL2 antibodies?

THNSL2 antibodies exhibit varying levels of cross-reactivity across species. Based on the search results, the following table summarizes predicted reactivity percentages for a representative antibody:

The most commonly validated species are human, mouse, and rat . When working with other species, researchers should verify reactivity experimentally or consult the manufacturer's technical support for specific information on epitope conservation.

What are the critical differences between different THNSL2 antibody preparations?

THNSL2 antibodies differ primarily in their immunogen targets (epitopes), host species, and conjugation status:

• Epitope targeting: Antibodies may target different regions of the THNSL2 protein:

  • N-terminal region (AA 232-261)

  • Middle region (represented by "LPLVEVVVPT GAAGNLAAGY IAQKIGLPIR LVVAVNRNDI IHRTVQQGDF")

  • Internal regions (AA 103-148, AA 192-204, AA 251-300, AA 295-441, AA 811-860)

• Host species: Predominantly rabbit, with some goat-derived antibodies available

• Conjugation status: Available as unconjugated or conjugated to various molecules:

  • Horseradish peroxidase (HRP)

  • Fluorescein isothiocyanate (FITC)

  • Biotin

The choice between these options should be determined by the specific experimental requirements and compatibility with other reagents in multi-parameter studies.

How can researchers validate the specificity of a THNSL2 antibody?

To validate THNSL2 antibody specificity, researchers should employ a multi-faceted approach:

• Positive control testing: Use cell lysates known to express THNSL2, such as HepG2, H9C2, or RAW264.7 cells

• Western blot analysis: Confirm a single band at the expected molecular weight (approximately 54 kDa)

• Blocking peptide competition: Pre-incubate the antibody with the immunizing peptide, which should abolish specific staining

• Knockout/knockdown validation: Compare antibody reactivity in THNSL2 knockout/knockdown samples versus wild-type

• Cross-validation: Compare results using antibodies targeting different epitopes of THNSL2

A comprehensive validation should include at least three of these methods to ensure reliable and reproducible research outcomes.

What are the optimal conditions for using THNSL2 antibodies in Western blot analysis?

For optimal Western blot results with THNSL2 antibodies, researchers should consider:

• Recommended dilutions: Most THNSL2 antibodies work optimally at 1:500-1:1000 dilution for Western blotting

• Sample preparation:

  • Use 40μg of whole cell lysate per lane

  • Include protease inhibitors during lysis to prevent degradation

  • Denature samples in standard SDS-PAGE buffer with reducing agents

• Gel concentration: Standard SDS-PAGE gels with 10-12% acrylamide are suitable for resolving THNSL2 (54 kDa)

• Transfer conditions: Standard semi-dry or wet transfer protocols for proteins of this size range

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

• Primary antibody incubation: Typically overnight at 4°C with gentle rocking

• Detection system: Compatible with standard HRP-conjugated secondary antibodies and ECL detection systems

For troubleshooting, researchers should optimize the antibody concentration first, followed by adjustments to blocking conditions and incubation times.

How should THNSL2 antibodies be stored and handled to maintain optimal activity?

Proper storage and handling of THNSL2 antibodies is critical for maintaining their activity and specificity:

• Long-term storage: Store at -20°C for up to one year

• Short-term storage: For frequent use, store at 4°C for up to one month

• Buffer conditions: THNSL2 antibodies are typically supplied in:

  • PBS with 0.02-0.09% sodium azide

  • 50% glycerol

  • pH 7.2

  • Some formulations include 2% sucrose as a stabilizer

• Aliquoting recommendations: Divide into small aliquots to avoid repeated freeze-thaw cycles, which significantly reduce antibody activity

• Handling precautions:

  • Some formulations contain sodium azide, which is toxic and requires proper handling

  • Avoid contamination by using sterile technique when handling antibody solutions

By following these storage and handling guidelines, researchers can maximize the lifespan and performance of their THNSL2 antibodies.

How can THNSL2 antibodies be utilized in multi-parameter analyses?

THNSL2 antibodies can be incorporated into multi-parameter analyses through several sophisticated approaches:

• Co-immunoprecipitation studies: To identify protein interaction partners of THNSL2, such as the known interactions with ZBTB16 and ARPC3

• Multiplex immunofluorescence:

  • FITC-conjugated THNSL2 antibodies can be combined with other fluorophore-labeled antibodies

  • Requires careful control of antibody cross-reactivity and spectral overlap

  • Important for co-localization studies with other proteins

• Sequential immunoblotting:

  • Stripping and reprobing membranes to detect THNSL2 alongside loading controls or related proteins

  • Consider molecular weight differences to avoid band overlap issues

• Flow cytometry multi-parameter analysis:

  • THNSL2 antibodies conjugated to FITC can be combined with antibodies against other markers

  • Particularly useful for analyzing THNSL2 expression in heterogeneous cell populations

These approaches enable researchers to place THNSL2 in broader biological contexts and understand its relationships with other cellular components.

What are the considerations for troubleshooting non-specific binding with THNSL2 antibodies?

When encountering non-specific binding with THNSL2 antibodies, researchers should systematically address:

• Blocking optimization:

  • Test different blocking agents (BSA, normal serum, commercial blockers)

  • Increase blocking time or concentration for high-background samples

• Antibody dilution adjustments:

  • Further dilute primary antibody if background is high

  • For Western blots, additional washing steps with higher detergent concentrations may help

• Cross-reactivity assessment:

  • Consider potential cross-reactivity with related proteins in the threonine synthase family

  • Use knockout/knockdown controls to distinguish specific from non-specific signals

• Fixation artifacts (for IHC/IF):

  • Different fixation methods may affect epitope accessibility

  • Compare paraformaldehyde, methanol, and acetone fixation results

  • Antigen retrieval optimization may be necessary for formalin-fixed tissues

• Isotype controls:

  • Include rabbit IgG controls at the same concentration as the THNSL2 antibody

  • This helps distinguish between specific binding and Fc receptor interactions

Systematic documentation of troubleshooting steps will help identify optimal conditions for each experimental system.

How do different sample preparation methods affect THNSL2 antibody performance?

Sample preparation can significantly impact THNSL2 antibody performance across different applications:

• Protein extraction methods:

  • RIPA buffer is suitable for most applications but may denature some conformational epitopes

  • Milder detergents (NP-40, Triton X-100) may better preserve native conformation for immunoprecipitation

  • Include phosphatase inhibitors if studying phosphorylated forms of THNSL2

• Tissue fixation for IHC/IF:

  • Formalin fixation may mask epitopes, requiring optimization of antigen retrieval methods

  • Fresh-frozen samples generally maintain better antigenicity but poorer morphology

  • Duration of fixation should be optimized (typically 24-48 hours for formalin)

• Cell preparation for flow cytometry:

  • Fixation and permeabilization reagents must be compatible with the target epitope

  • Surface versus intracellular staining protocols differ significantly

  • Cell viability dyes should be included to exclude dead cells that may bind antibodies non-specifically

• Preservation of post-translational modifications:

  • Phosphorylation sites may require specific lysis buffers with phosphatase inhibitors

  • Glycosylation studies may require native protein extraction methods

  • Proteolytic processing should be prevented with appropriate protease inhibitor cocktails

Researchers should conduct preliminary optimization experiments to determine the ideal sample preparation method for their specific THNSL2 antibody and experimental question.

What are the advantages and limitations of using polyclonal versus monoclonal THNSL2 antibodies?

The choice between polyclonal and monoclonal THNSL2 antibodies involves important trade-offs:

Based on the search results, most commercially available THNSL2 antibodies are polyclonal, produced in rabbit or goat . These polyclonal antibodies offer advantages for detection of low-abundance proteins and applications requiring high sensitivity, but researchers requiring absolute specificity might need to consider custom monoclonal antibody development.

How can quantitative analysis of THNSL2 expression be performed using antibody-based methods?

For quantitative analysis of THNSL2 expression, researchers can employ several antibody-based approaches:

• Quantitative Western blotting:

  • Include recombinant THNSL2 protein standards at known concentrations

  • Use digital imaging and densitometry software for quantification

  • Normalize to loading controls (β-actin, GAPDH)

  • Consider fluorescent secondary antibodies for wider linear dynamic range

• ELISA-based quantification:

  • Sandwich ELISA using capture and detection antibodies against different THNSL2 epitopes

  • Standard curves constructed using recombinant THNSL2 protein

  • Suitable for high-throughput screening of multiple samples

• Flow cytometry:

  • Mean fluorescence intensity (MFI) provides relative quantification

  • Quantitative flow cytometry with calibration beads can provide absolute quantities

  • Single-cell resolution allows analysis of expression heterogeneity

• Quantitative immunohistochemistry:

  • Digital image analysis of stained tissues

  • H-score or other semi-quantitative scoring methods

  • Comparison to calibrated standards

Each method has specific advantages and limitations, and the choice depends on the research question, available equipment, and required precision of quantification.

What is known about THNSL2 expression patterns across different tissues and disease states?

Current research on THNSL2 expression patterns remains limited, but some patterns can be inferred from available antibody validation data:

• Tissue expression:

  • Validated in multiple cell lines including HepG2 (liver cancer), H9C2 (cardiac), and RAW264.7 (macrophage)

  • This suggests expression in liver, cardiac tissue, and immune cells

  • The protein's alternative name as "Secreted osteoclastogenic factor of activated T-cells" (SOFAT) indicates functional relevance in T-cell and bone biology

• Disease associations:

  • Limited direct evidence in the search results

  • Its location on chromosome 2p11.2 places it in a region associated with various genetic disorders, though THNSL2 itself has not been specifically implicated

  • Potential role in immunological pathways through its T-cell factor function (SOFAT)

• Regulatory patterns:

  • Information on transcriptional or post-translational regulation is limited in the search results

  • The protein's enzymatic function suggests potential regulation in amino acid metabolism pathways

Further research is needed to comprehensively map THNSL2 expression across normal and pathological tissues and to understand its regulation in different physiological contexts.

How can researchers design experiments to investigate THNSL2 function using antibody-based approaches?

To investigate THNSL2 function using antibody-based approaches, researchers could design experiments such as:

• Functional neutralization studies:

  • Using antibodies to block THNSL2 function in cellular assays

  • Measuring impact on O-phospho-threonine degradation

  • Assessing downstream metabolic effects

• Protein-protein interaction mapping:

  • Co-immunoprecipitation followed by mass spectrometry to identify novel interaction partners beyond the known ZBTB16 and ARPC3

  • Proximity ligation assays to confirm interactions in situ

  • FRET/BRET studies for dynamic interaction analysis

• Subcellular localization studies:

  • Immunofluorescence with organelle markers to determine precise subcellular localization

  • Live-cell imaging with fluorescently tagged antibody fragments

  • Biochemical fractionation followed by Western blotting

• Post-translational modification mapping:

  • Immunoprecipitation followed by mass spectrometry to identify modifications

  • Phospho-specific antibodies to track activation status

  • Quantitative changes in modifications under different cellular conditions

• In vivo functional studies:

  • Intracellular antibody expression to disrupt function in specific tissues

  • Antibody-mediated tracking of THNSL2 in model organisms

  • Correlating THNSL2 expression with metabolic parameters

These experimental approaches would provide complementary insights into THNSL2 biology from different angles, building a more comprehensive understanding of its functions.

What criteria should be used when selecting a THNSL2 antibody for a specific research application?

When selecting a THNSL2 antibody for a specific research application, consider the following criteria:

• Validated applications:

  • Ensure the antibody has been validated for your specific application (WB, IHC, IF, ELISA, etc.)

  • Check for representative images in the technical datasheet showing the expected staining pattern

• Species reactivity:

  • Verify cross-reactivity with your species of interest

  • Check sequence homology between species if working with non-validated species

• Epitope information:

  • For detecting specific isoforms, select antibodies targeting unique regions

  • For detecting all isoforms, choose antibodies targeting conserved regions

  • Consider epitope accessibility in your experimental conditions (native vs. denatured)

• Validation rigor:

  • Prioritize antibodies with multiple validation methods (Western blot, knockout controls, etc.)

  • Check for validation across multiple cell lines or tissues

• Format compatibility:

  • For direct detection, consider conjugated antibodies (HRP, FITC, etc.)

  • For multiplexing, ensure compatible host species with other primary antibodies

• Technical support:

  • Availability of detailed protocols

  • Access to technical support for troubleshooting

  • Blocking peptides for specificity controls

By systematically evaluating these criteria, researchers can select the most appropriate THNSL2 antibody for their specific application and experimental system.

What are the recommended citation practices when publishing research using THNSL2 antibodies?

When publishing research using THNSL2 antibodies, adhere to these citation practices to ensure reproducibility:

• Antibody identification:

  • Include manufacturer name and location

  • Provide catalog number and lot number when possible

  • Specify host species, clonality, and target epitope information

• Method details:

  • Report working dilutions used for each application

  • Describe blocking conditions, incubation times, and temperatures

  • Document any modifications to manufacturer protocols

• Validation information:

  • Include validation data or reference to validation studies

  • Describe controls used to confirm specificity

  • Note any observed limitations or cross-reactivity

• Example citation format:
  "Anti-Threonine synthase-like 2 THNSL2 Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # A11597, Lot # [number])"

• Resource identification initiatives:

  • Consider including Research Resource Identifiers (RRIDs) for antibodies

  • This facilitates tracking antibody use across publications and improves reproducibility

Proper citation practices enhance experimental reproducibility and enable accurate comparison of results across different studies using THNSL2 antibodies.