The term "CMT2 Antibody" refers to specialized antibodies targeting proteins associated with Charcot-Marie-Tooth disease type 2 (CMT2), a group of inherited axonal neuropathies. These antibodies are critical tools for research, enabling the detection and study of molecular mechanisms underlying CMT2. One prominent example is Anti-CMT2 antibody [EPR9584] (ab150363), a recombinant monoclonal antibody validated for immunohistochemistry (IHC), Western blot (WB), and immunofluorescence (ICC/IF) applications .
CMT2 antibodies are primarily used to investigate the role of specific proteins in peripheral nerve function and disease pathology. Key applications include:
Western blot analysis: Detecting CMT2-binding protein (MAD2L1BP) at ~35 kDa in human cell lysates .
Immunohistochemistry: Localizing CMT2 protein expression in paraffin-embedded human brain and cervical carcinoma tissues .
Functional studies: Investigating interactions with MAD2L1 to regulate mitotic progression and spindle checkpoint silencing .
Anti-CMT2 antibody [EPR9584] demonstrates high specificity, as shown by:
Knockout validation: No signal observed in MAD2L1BP-knockout HeLa cell lines (ab257510) .
Cross-reactivity: Reactivity limited to human samples, with no reported cross-species activity .
While CMT2 antibodies are research tools, their targets (e.g., MFN2, IGHMBP2) are implicated in CMT2 subtypes:
MFN2 mutations: Linked to CMT2A, the most common axonal form (20% of cases), causing mitochondrial dysfunction .
IGHMBP2 mutations: Associated with CMT2S, a recessive form with variable severity .
CMT2 antibodies have elucidated pathways such as:
Mitochondrial dynamics: MFN2’s role in mitochondrial fusion and axonal energy supply .
Cell cycle regulation: MAD2L1BP’s interaction with MAD2L1 to control anaphase progression .
| Gene | Protein Function | Associated CMT2 Subtype | Prevalence |
|---|---|---|---|
| MFN2 | Mitochondrial fusion GTPase | CMT2A | ~20% |
| IGHMBP2 | DNA helicase activity | CMT2S | Rare |
| HSPB1 | Heat shock protein chaperone | CMT2L | <1% |
Emerging research leverages antibodies for:
What is the target of Anti-CMT2 Antibody and what is its biological significance?
The Anti-CMT2 Antibody [ARC2187] specifically targets MAD2L1 Binding Protein (MAD2L1BP), a 37 kDa protein involved in mitotic checkpoint regulation . Methodologically, understanding this target is essential for designing appropriate experimental controls. MAD2L1BP functions as a negative regulator of the spindle assembly checkpoint by interacting with MAD2, promoting mitotic progression. When designing experiments to study cell cycle regulation, researchers should consider the temporal expression patterns of this protein throughout mitosis and its interactions with other checkpoint proteins.
What applications is the Anti-CMT2 Antibody validated for?
The Anti-CMT2 Antibody [ARC2187] has been validated for multiple research applications with specific methodological parameters :
Western Blot (WB): Recommended dilutions of 1:500-1:2,000
Immunohistochemistry (IHC): Recommended dilutions of 1:50-1:200
Immunocytochemistry/Immunofluorescence (ICC/IF): Recommended dilutions of 1:50-1:200
For each application, researchers should begin with the recommended dilutions and optimize based on their specific experimental system. Initial validation should include positive controls expressing known levels of MAD2L1BP and appropriate negative controls.
What species reactivity should be considered when using the Anti-CMT2 Antibody?
The Anti-CMT2 Antibody [ARC2187] demonstrates reactivity with human, mouse, and rat samples . This cross-species reactivity is methodologically advantageous for comparative studies. Researchers should verify antibody performance in their specific model system through preliminary experiments. When designing cross-species studies, consider the sequence homology of the target epitope region (amino acids 175-274 of human MAD2L1BP ) across different species to anticipate potential variations in binding affinity and specificity.
What are the recommended storage and handling protocols for maximizing Anti-CMT2 Antibody performance?
To maintain optimal antibody performance, follow these methodological considerations :
Shipping temperature: The antibody is shipped at 4°C
Long-term storage: Store at -20°C upon receipt
Aliquoting: Divide into single-use aliquots to avoid repeated freeze/thaw cycles
Formulation stability: The antibody is supplied in Phosphate Buffered Saline (pH 7.3) with 50% Glycerol, 0.05% BSA, and 0.02% Sodium Azide
This formulation maintains antibody stability during storage, but researchers should avoid more than 3-5 freeze/thaw cycles, as this can significantly decrease antibody performance through protein denaturation and aggregation.
What controls should be included when using Anti-CMT2 Antibody in research protocols?
Methodologically rigorous experiments with Anti-CMT2 Antibody should include these controls :
Isotype controls: Rabbit IgG (A82272 or A17360) at matching concentrations
Positive controls: Cell lines or tissues with confirmed MAD2L1BP expression
Negative controls: Primary antibody omission and ideally MAD2L1BP-knockdown samples
Loading controls: For Western blots, include housekeeping proteins (β-actin recommended)
These controls allow researchers to distinguish specific from non-specific binding and validate the sensitivity and specificity of the detection system.
How can researchers validate the specificity of Anti-CMT2 Antibody in their experimental systems?
A comprehensive validation strategy should include:
Gene silencing approach: Compare antibody signal between wild-type and MAD2L1BP-depleted cells (siRNA or CRISPR)
Recombinant protein detection: Test antibody against purified MAD2L1BP protein
Peptide competition: Pre-incubate antibody with the immunizing peptide (amino acids 175-274 )
Cross-reactivity assessment: Test against closely related proteins in the MAD2L1 interactome
Multiple detection methods: Confirm findings using alternative techniques (e.g., mass spectrometry)
This multi-parameter validation approach establishes confidence in antibody specificity and ensures experimental reproducibility.
What are the optimal fixation and permeabilization conditions for detecting MAD2L1BP in different sample types?
The methodological approach to fixation varies by application:
For IHC:
Formalin-fixed paraffin-embedded (FFPE) tissues: Perform heat-mediated antigen retrieval
Frozen sections: 4% paraformaldehyde fixation followed by gentle permeabilization
For ICC/IF:
Adherent cells: 4% paraformaldehyde (10-15 minutes) followed by 0.1-0.25% Triton X-100 permeabilization
Suspension cells: Methanol fixation/permeabilization (-20°C, 10 minutes)
The rabbit monoclonal nature of Anti-CMT2 Antibody [ARC2187] makes it compatible with most standard fixation protocols, but optimization is essential as overfixation can mask the epitope (amino acids 175-274).
What strategies can researchers employ when troubleshooting weak or absent signals with Anti-CMT2 Antibody?
A methodological troubleshooting approach includes:
Each troubleshooting step should be systematically documented to establish optimal conditions for specific experimental systems.
How can Anti-CMT2 Antibody be used in co-immunoprecipitation studies to investigate MAD2L1BP protein interactions?
For co-immunoprecipitation (Co-IP) of MAD2L1BP complexes:
Lysis methodology: Use gentle, non-denaturing lysis buffers (e.g., 20 mM Tris-HCl pH 7.5, 150 mM NaCl, 1 mM EDTA, 1% NP-40) with protease/phosphatase inhibitors
Pre-clearing: Incubate lysate with Protein A/G beads to reduce non-specific binding
Immunoprecipitation: Incubate pre-cleared lysate with Anti-CMT2 Antibody (3-5 μg per mg of protein)
Complex capture: Add Protein A beads (compatible with rabbit IgG )
Washing: Perform stringent washes to remove non-specific interactions
Elution and analysis: SDS-PAGE separation followed by immunoblotting for interacting partners
This methodological approach can identify novel MAD2L1BP protein interactions and validate known associations with MAD2 and other mitotic checkpoint components.
How does phosphorylation state impact MAD2L1BP detection with Anti-CMT2 Antibody?
The Anti-CMT2 Antibody [ARC2187] targets amino acids 175-274 of human MAD2L1BP , a region that contains potential phosphorylation sites that may affect epitope accessibility. Methodologically, researchers should consider:
Phosphatase treatment: Compare antibody signal with and without lambda phosphatase treatment
Cell cycle synchronization: Analyze MAD2L1BP detection across different cell cycle phases
Phospho-specific detection: Combine with phospho-specific antibodies in multiplexed experiments
Mobility shift analysis: Examine band patterns for shifts indicating post-translational modifications
Understanding the impact of phosphorylation on antibody binding is crucial for correctly interpreting experimental results, especially in studies of mitotic regulation where phosphorylation dynamics are prominent.
What methodologies are recommended for quantitative analysis of MAD2L1BP expression using Anti-CMT2 Antibody?
For rigorous quantitative analysis:
Western blot quantification:
Immunofluorescence quantification:
Use consistent exposure settings across all samples
Include intensity calibration standards
Apply automated image analysis with defined thresholds
Perform Z-stack acquisition to capture total cellular expression
Flow cytometry analysis:
Optimize fixation/permeabilization for intracellular staining
Use fluorophore-conjugated secondary antibodies with minimal spectral overlap
Include appropriate compensation controls
Analyze median fluorescence intensity rather than mean values
These methodological approaches enable reliable quantification of MAD2L1BP expression across experimental conditions.
How can researchers design multiplexed experiments using Anti-CMT2 Antibody with other cell cycle markers?
For effective multiplexed detection:
Antibody selection considerations:
Sequential staining methodology:
Begin with the lowest concentration antibody
Consider tyramide signal amplification for sequential detection
Use spectral unmixing for closely overlapping fluorophores
Analytical approach:
Employ colocalization analysis to examine spatial relationships
Quantify correlation coefficients between MAD2L1BP and other markers
Analyze co-expression patterns throughout the cell cycle
This methodological framework enables complex experimental designs to study MAD2L1BP in relation to other cell cycle regulatory proteins in a spatiotemporal context.