tmem179b Antibody

What is TMEM179B and why is it studied?

TMEM179B is a multi-pass transmembrane protein encoded by the TMEM179B gene (Gene ID: 374395). It functions as an integral membrane protein with potential roles in cellular signaling pathways. Research on TMEM179B has been linked to neutrophil degranulation processes, suggesting potential immunological functions . The protein consists of 219 amino acids with a molecular structure that includes multiple transmembrane domains, making it an interesting target for membrane protein research and potential therapeutic applications .

What types of TMEM179B antibodies are currently available for research?

There are several types of TMEM179B antibodies available, each with specific characteristics:

These antibodies enable researchers to target different epitopes of TMEM179B for various experimental applications and species .

How should TMEM179B antibodies be stored and handled?

Proper storage and handling are essential for maintaining antibody activity:

• Store at -20°C or lower for long-term preservation

• Aliquot antibodies to avoid repeated freeze-thaw cycles, which can compromise activity

• Most antibodies are supplied in buffer containing PBS with stabilizers such as glycerol (50%), BSA (0.5%), and sodium azide (0.02%)

• Antibodies remain stable for approximately one year from receipt date when stored properly

• Allow antibodies to equilibrate to room temperature before opening to prevent condensation

Following these guidelines will maximize antibody shelf-life and experimental reproducibility.

How do I select the appropriate TMEM179B antibody for my specific application?

Selecting the optimal TMEM179B antibody requires consideration of several factors:

• Experimental application: For Western blotting, all three antibody types mentioned above are suitable, while IHC and ICC-IF applications are better served by the rabbit polyclonal (HPA016585)

• Species reactivity: Match the antibody to your experimental model - some antibodies are human-specific, while others cross-react with mouse samples

• Epitope region: Consider the protein domain you wish to study - full-length antibodies (AA 1-219) provide broad recognition, while region-specific antibodies (e.g., AA 139-189) may offer targeted detection of specific domains or splice variants

• Clonality: Monoclonal antibodies offer high specificity for a single epitope with high batch-to-batch consistency, while polyclonal antibodies recognize multiple epitopes, potentially providing stronger signals but with slightly lower specificity

Evaluate these criteria against your experimental goals to select the most appropriate antibody.

What validation experiments should I perform before using a TMEM179B antibody in my research?

Thorough validation is essential for reliable results:

• Western blot analysis: Verify antibody specificity by confirming the presence of bands at the expected molecular weight (approximately 23-31 kDa for TMEM179B)

• Positive and negative controls: Use tissues or cell lines known to express TMEM179B (e.g., A549 cells for TMEM176B) as positive controls, and tissues/cells with low expression as negative controls

• Peptide competition assay: Pre-incubate the antibody with its immunizing peptide to confirm specificity - signal should be reduced or eliminated if the antibody is specific

• Recombinant protein controls: Test reactivity against recombinant TMEM179B protein to confirm detection capabilities

• Knockdown/knockout validation: Use siRNA or CRISPR to reduce TMEM179B expression and confirm corresponding reduction in antibody signal

Documenting these validation steps enhances data reliability and reproducibility.

What are the critical differences between monoclonal and polyclonal TMEM179B antibodies?

Understanding these differences helps optimize experimental design:

The choice between monoclonal and polyclonal depends on your specific experimental requirements for sensitivity, specificity, and application.

What are the optimal conditions for Western blotting with TMEM179B antibodies?

Successful Western blotting requires optimized protocols:

• Sample preparation:

  • Extract proteins using RIPA buffer supplemented with protease inhibitors

  • Include membrane protein extraction steps for optimal TMEM179B recovery

  • Avoid boiling samples, as this may cause membrane protein aggregation

• Antibody dilutions:

  • Mouse monoclonal (ABIN2752467): Optimization required per investigator

  • Rabbit polyclonal (STJ193842): 1:500-1:2000 dilution range

  • TMEM176B antibody (19825-1-AP): 1:200-1:1000 dilution range

• Detection of observed bands:

  • Expected molecular weight: ~23-31 kDa

  • TMEM176B has been observed at 31 kDa and 23 kDa, suggesting potential isoforms or post-translational modifications

• Controls:

  • Positive control: A549 cells, human placenta tissue

  • Include loading controls (e.g., GAPDH, β-actin)

• Blocking and washing:

  • 5% non-fat milk or BSA in TBST for blocking

  • Multiple washes with TBST to reduce background

Optimization of these parameters for your specific sample types will improve detection sensitivity and specificity.

How can I optimize immunohistochemistry (IHC) protocols for TMEM179B detection?

While specific IHC protocols for TMEM179B are not detailed in the provided sources, general optimization principles include:

• Fixation and antigen retrieval:

  • Test both formalin-fixed paraffin-embedded (FFPE) and frozen sections

  • Evaluate different antigen retrieval methods (citrate buffer pH 6.0, EDTA buffer pH 9.0)

  • For membrane proteins like TMEM179B, detergent-based permeabilization may improve epitope accessibility

• Antibody selection:

  • The rabbit polyclonal antibody (HPA016585) is validated for IHC applications

  • Titrate antibody concentrations (starting with manufacturer recommendations)

• Detection systems:

  • For membrane proteins, chromogenic detection (DAB) or fluorescent labeling may be used

  • Signal amplification systems (e.g., tyramide signal amplification) may enhance sensitivity

• Controls:

  • Include tissue sections known to express TMEM179B

  • Use isotype control antibodies to assess non-specific binding

• Counterstaining:

  • Light hematoxylin counterstain for chromogenic detection

  • Nuclear stains (DAPI, Hoechst) for fluorescent applications

Systematic optimization of these parameters will ensure reliable TMEM179B detection in tissue sections.

What cell lines and tissue types are recommended for studying TMEM179B expression?

Based on available information and related transmembrane proteins:

• Cell lines:

  • A549 cells have been used successfully for TMEM176B detection and may be suitable for TMEM179B studies

  • Human cell lines derived from tissues with known TMEM179B expression should be considered

• Tissue types:

  • Human placenta tissue has shown positive reactivity in Western blot analysis for related transmembrane proteins

  • Based on gene ontology annotations, tissues with high neutrophil activity may express TMEM179B

• Expression databases:

  • Consult resources like Human Protein Atlas, GTEx, and NCBI Gene Expression Omnibus for tissue-specific expression data

  • These resources can guide selection of appropriate experimental models

Selecting appropriate models based on expression patterns will enhance the physiological relevance of your research findings.

What are common issues when working with TMEM179B antibodies and how can they be resolved?

Membrane proteins like TMEM179B present specific challenges:

Systematic troubleshooting of these common issues can significantly improve experimental outcomes.

How can I quantify TMEM179B expression levels accurately?

Accurate quantification requires proper methodology:

• Western blot quantification:

  • Use housekeeping proteins (β-actin, GAPDH) as loading controls

  • Employ image analysis software (ImageJ, Image Lab) for densitometry

  • Generate standard curves using recombinant TMEM179B protein

  • Include biological and technical replicates (n≥3)

• RT-qPCR for mRNA expression:

  • Design primers spanning exon-exon junctions

  • Validate primers for efficiency and specificity

  • Use established reference genes for normalization

  • Follow MIQE guidelines for experimental design and reporting

• Flow cytometry:

  • Optimize permeabilization for intracellular/membrane protein detection

  • Include fluorescence-minus-one (FMO) controls

  • Use median fluorescence intensity (MFI) for quantification

• Mass spectrometry:

  • Consider targeted approaches (SRM/MRM) for absolute quantification

  • Use isotope-labeled peptides as internal standards

These multimodal approaches provide complementary data on TMEM179B expression at protein and transcript levels.

What are the best methods for preserving TMEM179B antibody activity and stability?

Maximizing antibody performance requires careful handling:

• Storage recommendations:

  • Store at -20°C as recommended by manufacturers

  • Divide into small aliquots upon receipt to minimize freeze-thaw cycles

  • Some antibodies contain 50% glycerol, which prevents freezing solid at -20°C

• Working dilution preparation:

  • Prepare fresh working dilutions on the day of experiments

  • Use high-quality diluents (e.g., 1% BSA in PBS, commercial antibody diluents)

  • Keep diluted antibodies cold (4°C) during use

• Contamination prevention:

  • Use sterile technique when handling antibody solutions

  • Sodium azide (0.02%) is typically included as a preservative

  • Avoid introducing bacteria or fungi that can degrade antibodies

• Monitoring stability:

  • Include positive controls in each experiment to track antibody performance over time

  • Document lot numbers and performance characteristics

Following these practices will extend antibody shelf-life and maintain consistent experimental results.

How can TMEM179B antibodies be used to study protein-protein interactions?

Advanced interaction studies require specialized techniques:

• Co-immunoprecipitation (Co-IP):

  • Use TMEM179B antibodies to pull down protein complexes

  • Employ gentle lysis buffers to preserve membrane protein interactions

  • Consider crosslinking approaches for transient interactions

  • Analyze precipitated complexes by mass spectrometry for unbiased interaction screening

• Proximity labeling techniques:

  • Combine TMEM179B antibodies with BioID or APEX2 proximity labeling

  • These methods identify proteins in close proximity to TMEM179B in living cells

• Förster Resonance Energy Transfer (FRET):

  • Use fluorescently-labeled TMEM179B antibodies or antibody fragments

  • Detect protein interactions through energy transfer between fluorophores

• Immunofluorescence co-localization:

  • Combine TMEM179B antibodies with antibodies against potential interacting partners

  • Quantify co-localization using appropriate statistical methods (Pearson's correlation, Manders' coefficient)

These complementary approaches can identify both stable and transient interaction partners of TMEM179B.

How do post-translational modifications affect TMEM179B antibody recognition and function?

Post-translational modifications (PTMs) can significantly impact antibody recognition:

• Common PTMs affecting membrane proteins:

  • Glycosylation: May alter apparent molecular weight and epitope accessibility

  • Phosphorylation: Can create or mask antibody binding sites

  • Ubiquitination: May indicate protein turnover or regulation

• Epitope-specific considerations:

  • Antibodies targeting AA 1-219 (full-length) may detect various modified forms

  • Region-specific antibodies (e.g., AA 139-189) may be sensitive to modifications within that region

  • The immunogen sequence (FGTRSLCNSI ISLNTTISCS EAQKIPWTPP GTALQFYSNL HNAETSS) contains potential modification sites

• Experimental approaches:

  • Use phosphatase or glycosidase treatments to assess modification impacts

  • Compare multiple antibodies targeting different epitopes

  • Combine with mass spectrometry to identify specific modifications

Understanding these PTM effects is crucial for accurate interpretation of experimental results.

What are the emerging applications of TMEM179B antibodies in disease research?

While specific disease associations for TMEM179B are not detailed in the provided sources, related research directions may include:

• Neutrophil biology and inflammation:

  • Gene ontology annotations link TMEM179B to neutrophil degranulation

  • Study potential roles in inflammatory conditions and immune response

• Cancer research:

  • Related transmembrane proteins (TMEM176B) have been associated with lung carcinoma

  • Investigate TMEM179B expression patterns across cancer types

  • Explore potential as biomarker or therapeutic target

• Membrane protein trafficking:

  • Investigate TMEM179B's role in cellular transport mechanisms

  • Study potential involvement in vesicular trafficking pathways

• Comparative studies with related proteins:

  • Examine functional relationships with TMEM176B and other family members

  • Investigate potential redundancy or complementary functions

These emerging areas represent promising directions for future TMEM179B research using antibody-based approaches.