mab-21 Antibody
Description
Introduction to mab-21 Antibody
The mab-21 antibody targets the MAB21L2 protein, a member of the Mab-21 family first identified in C. elegans. This protein plays essential roles in embryonic development, including neural tube formation, eye morphogenesis, and cell fate specification . In humans, MAB21L2 mutations are associated with microphthalmia/coloboma and skeletal dysplasia syndrome (MCSKS14) .
Key Features of MAB21L2:
| Property | Details |
|---|---|
| Gene Symbol | MAB21L2 |
| Protein Mass | 40.9 kDa (359 amino acids) |
| Subcellular Localization | Nucleus and cytoplasm |
| Homologs | C. elegans mab-21, mouse Mab21l2, zebrafish mab21l2 |
| Functional Domains | Binds SMAD1/4; transcriptional repressor activity |
| Disease Associations | MCSKS14, congenital eye defects, skeletal dysplasia |
Sources highlight MAB21L2's interaction with BMP/TGF-β signaling effectors like SMAD1, modulating transcriptional responses during embryogenesis .
Common Uses of mab-21 Antibodies:
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Western Blot (WB): Detects endogenous MAB21L2 in mouse brain and human tissues .
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Immunohistochemistry (IHC): Localizes MAB21L2 in colon cancer tissues .
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Functional Studies: Analyzes BMP4 signaling antagonism and SMAD1 interactions .
Recommended Antibody Dilutions (Proteintech, 10971-1-AP):
| Application | Dilution Range |
|---|---|
| Western Blot | 1:200–1:1000 |
| Immunohistochemistry | 1:50–1:500 |
Key Discoveries:
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BMP4 Antagonism:
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Transcriptional Repression:
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Developmental Roles:
Future Directions
Research priorities include:
Product Specs
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Target Background
Q&A
FAQs for Researchers on mab-21 Antibody in Academic Research
Advanced Research Questions
How can structural biology approaches optimize the binding affinity of a MAB-21 antibody?
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Methodological Answer:
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Epitope Mapping: Use cryo-EM or X-ray crystallography to resolve the antibody-antigen interface. Target conserved regions (e.g., pGlu-CSP in malaria mAbs) .
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Affinity Maturation: Employ phage display libraries to introduce mutations in CDR regions. Screen for variants with improved binding kinetics (e.g., lower K<sub>D</sub>) .
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Computational Design: Utilize Rosetta or AlphaFold to predict stabilizing mutations in the antibody framework .
Engineering Strategy Application to MAB-21 Outcome Metrics Epitope mapping Identify interaction hotspots Resolution of binding interface (Å) Phage display screening Optimize CDR-H3 loop conformation K<sub>D</sub> (nM), off-rate (s<sup>-1</sup>) Computational prediction Reduce immunogenicity risk Aggregation propensity scores -
What strategies resolve contradictions in functional data for MAB-21 antibodies across studies?
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Methodological Answer:
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Batch Variability Analysis: Compare antibody lots using surface plasmon resonance (SPR) to assess binding consistency .
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Context-Dependent Assays: Test antibody function in different developmental stages or tissue types (e.g., larval vs. adult C. elegans) .
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Orthogonal Validation: Pair antibody-based results with CRISPR-Cas9 knockouts or RNAi to confirm phenotype specificity .
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Data Analysis and Interpretation
How should researchers address non-autonomous effects observed in MAB-21 antibody studies?
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Methodological Answer:
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Mosaic Analysis: Generate genetic mosaics in C. elegans to distinguish cell-autonomous vs. signaling-mediated effects .
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Conditional Knockdown: Use tissue-specific promoters to titrate antibody expression and isolate direct vs. indirect phenotypes .
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Single-Cell RNA Sequencing: Profile transcriptional changes in antibody-treated vs. untreated cells to identify downstream pathways .
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What are the best practices for standardizing MAB-21 antibody protocols across labs?
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Methodological Answer:
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Reference Reagents: Distribute aliquots from a centralized source (e.g., NIH/NIAID guidelines for malaria mAbs) .
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Inter-Lab Validation: Conduct round-robin trials comparing staining patterns, dilution ratios, and blocking buffers .
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Documentation: Publish detailed protocols with failure modes (e.g., cross-reactivity with C. briggsae MAB-21 homologs) .
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