YRM1 Antibody

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Description

Target Identification: YM1/Chitinase 3-like 3

YM1 (also termed Chitinase 3-like 3 or ECF-L) is a secreted 377-amino-acid lectin produced primarily by macrophages during inflammatory responses. Unlike classical chitinases, it lacks enzymatic activity but binds heparin and GlcN oligomers .

Applications in Research

YM1 antibodies are critical tools for studying macrophage polarization and immune regulation:

Diagnostic and Functional Studies

  • Western Blot: Detects YM1 at 45–49 kDa in mouse bone marrow lysates .

  • Immunohistochemistry: Localizes YM1+ macrophages in tumor microenvironments (e.g., pancreatic cancer models) .

  • Immune Modulation: YM1 crystals promote type 2 immunity and correlate with fibrosis progression .

Therapeutic Insights

  • Cancer Research: YM1+ macrophages drive lesion growth in murine pancreatic cancer via TGF-β signaling .

  • Autoimmunity: Elevated YM1 levels associate with chronic inflammation in colitis models .

AF2446 (Goat Anti-Mouse YM1)

  • Format: Polyclonal, affinity-purified.

  • Applications: Western Blot (0.2 µg/mL), Immunofluorescence .

  • Storage: Stable at -20°C to -70°C; avoid freeze-thaw cycles .

BAF2446 (Biotinylated Version)

  • Use Case: Flow cytometry and ELISA applications .

  • Specificity: Recognizes native YM1 in extracellular matrix assays .

Inflammatory Roles

  • Macrophage Polarization: YM1 marks alternatively activated (M2) macrophages in helminth infections and allergic inflammation .

  • Fibrosis: Ym1+ macrophages orchestrate stromal remodeling in pancreatic ductal adenocarcinoma via IL-13 secretion .

Technical Validation

  • Cross-Reactivity: No observed reactivity with human or rat homologs .

  • Batch Consistency: Lot-specific QC data ensure ≤10% variability in binding affinity .

Limitations and Considerations

  • Species Restriction: Limited to mouse models; no human homolog validated .

  • Functional Redundancy: YM1-deficient mice show compensatory upregulation of related chitinase-like proteins (e.g., Ym2) .

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M Phosphate Buffered Saline (PBS), pH 7.4
Form
Liquid
Lead Time
Made-to-order (14-16 weeks)
Synonyms
YRM1 antibody; YOR172W antibody; O3620Zinc finger transcription factor YRM1 antibody; Reveromycin resistance modulator 1 antibody
Target Names
YRM1
Uniprot No.

Target Background

Function
YRM1 Antibody targets a transcription factor involved in regulating multidrug resistance genes. It functions in conjunction with the YRR1 protein.
Database Links

KEGG: sce:YOR172W

STRING: 4932.YOR172W

Subcellular Location
Cytoplasm. Nucleus.

Q&A

How do I properly identify and cite YRM1 antibodies in my research publications?

Antibody identification and proper citation are critical for experimental reproducibility. The Antibody Registry provides Research Resource Identifiers (RRIDs) that enable persistent citation of antibody reagents. When using YRM1 antibodies, you should register them in the Antibody Registry (https://antibodyregistry.org) to obtain an RRID, which should be included in your publications .

Several journals now require or strongly encourage RRID citation, with compliance rates varying based on journal policies. Journals actively requiring antibody RRIDs have over 90% compliance, while those with passive instructions achieve only about 1% compliance . For proper citation, include the antibody clone name, manufacturer, catalog number, and RRID in your materials and methods section.

What validation methods should I use to confirm YRM1 antibody specificity?

Antibody validation is essential to ensure experimental reliability. For YRM1 antibodies, consider these validation approaches:

  • Knockout/knockdown validation: Test antibody in YRM1 knockout or knockdown samples to confirm specificity

  • Immunoprecipitation followed by mass spectrometry: Verify that the antibody captures the intended YRM1 protein

  • Western blot analysis: Confirm the antibody detects a band of the expected molecular weight

  • Cross-reactivity testing: Assess potential cross-reactivity with similar proteins, especially in the context of yeast protein interactome studies

Multiple validation methods should be employed, as antibodies represent a major source of experimental variability across studies .

What are the key considerations when selecting YRM1 antibodies for protein interaction studies?

When selecting YRM1 antibodies for protein interaction studies, consider:

  • Epitope location: Choose antibodies that target accessible epitopes that won't interfere with protein-protein interactions

  • Affinity and specificity: Higher affinity antibodies generally provide better signal-to-noise ratios in pull-down experiments

  • Compatible applications: Verify the antibody is validated for your specific application (Western blot, immunoprecipitation, etc.)

  • Buffer compatibility: Ensure the antibody performs well in buffers that preserve protein-protein interactions

For interactome studies, consider that affinity purification coupled to mass spectrometry (AP-MS) is widely used to study protein interactions. This technique allows for the identification of protein complexes containing your protein of interest (in this case, YRM1) .

How can deep learning approaches improve YRM1 antibody design and functionality?

Deep learning has revolutionized antibody design by generating in-silico antibody sequences with desirable properties. For YRM1-specific antibodies, researchers can leverage similar approaches to:

  • Optimize complementarity-determining regions (CDRs): Deep learning models can predict optimal CDR sequences for YRM1 binding, balancing diversity and specificity

  • Minimize chemical liabilities: Models can reduce unpaired cysteines and N-linked glycosylation motifs that could impact antibody stability and function

  • Enhance developability: Algorithms can select for sequences with higher expression levels, thermal stability, and reduced self-association

Research has shown that deep learning-generated antibodies perform comparably to approved antibodies in experimental validation. In one study, 51 high-quality in-silico generated antibody sequences were experimentally tested, and all expressed well in mammalian cells with desirable developability attributes .

What novel approaches exist for developing YRM1 monoclonal antibodies with improved specificity?

Traditional monoclonal antibody development targets surface proteins, but recent innovations suggest alternative approaches:

  • Targeting internal protein domains: Similar to approaches used for SARS-CoV-2, targeting more conserved internal proteins rather than variable surface domains may increase specificity and reduce off-target effects

  • Combined epitope targeting: Developing antibodies that simultaneously bind to multiple epitopes on YRM1 can enhance specificity

  • Structure-guided design: Using protein structure information to design antibodies targeting functionally important but less variable regions of YRM1

These approaches may be particularly valuable when working with YRM1, as targeting internal, more genetically stable protein regions can improve antibody effectiveness across different experimental conditions .

How can I effectively map the YRM1 protein interactome using antibody-based approaches?

Mapping the YRM1 protein interactome requires sophisticated methodology:

  • Affinity purification coupled to mass spectrometry (AP-MS): This is the most widely used approach, where YRM1 antibodies capture the protein along with its interaction partners from cell lysates

  • Proximity labeling: Methods like BioID or APEX can identify proteins in close proximity to YRM1 in living cells

  • Co-fractionation analysis: Size-exclusion chromatography (SEC) or ion-exchange chromatography (IEX) coupled with MS can detect proteins that co-elute with YRM1

For high-throughput interactome studies, consider:

ApproachAdvantagesLimitationsBest For
IP with YRM1 antibodiesHigh specificityLimited to stable interactionsKnown protein complexes
Tagged YRM1 pull-downsStandardized protocolMay affect protein functionNovel interaction discovery
Proximity labelingCaptures transient interactionsHigher backgroundIn vivo interaction studies
Co-fractionationNative conditionsLower specificityLarge-scale screening

Advanced bioinformatic analysis is necessary to score interactions and filter out false positives .

What experimental controls are essential when using YRM1 antibodies in ChIP-seq experiments?

When conducting Chromatin Immunoprecipitation sequencing (ChIP-seq) with YRM1 antibodies, implement these critical controls:

  • Input control: Sequence a portion of the starting chromatin to normalize for biases in DNA shearing and amplification

  • Isotype control: Use a non-specific antibody of the same isotype to identify background binding

  • YRM1 knockdown/knockout: Include samples where YRM1 is depleted to confirm signal specificity

  • Biological replicates: Perform at least three independent experiments to ensure reproducibility

  • Spike-in controls: Consider adding exogenous chromatin (e.g., from another species) as a normalization control

Additionally, perform antibody validation specifically for ChIP applications, as antibodies that work well in other applications may not perform adequately in ChIP-seq.

How should I troubleshoot inconsistent results when using YRM1 antibodies across different experimental batches?

Inconsistent results with YRM1 antibodies may stem from several factors:

  • Antibody lot variation: Different manufacturing lots can show variable performance. Document lot numbers and consider purchasing larger lots for long-term projects

  • Epitope accessibility changes: Different experimental conditions may alter YRM1 conformation, affecting epitope accessibility

  • Cross-reactivity issues: YRM1 antibodies may cross-react with related proteins under certain conditions

Troubleshooting approaches include:

  • Standardized protocols: Maintain consistent cell lysis conditions, buffer compositions, and incubation times

  • Antibody titration: Determine optimal antibody concentration for each application

  • Multiple antibody validation: Use antibodies targeting different YRM1 epitopes to confirm results

  • Positive and negative controls: Include samples with known YRM1 expression levels

Remember that antibodies represent a major source of variability across studies , so thorough validation and standardization are essential.

What mass spectrometry approaches are most effective for identifying YRM1 antibody-captured protein complexes?

For analyzing YRM1 protein complexes captured by antibody pull-downs, consider these mass spectrometry approaches:

  • High-throughput LC-MS/MS: Systems like the Evosep One coupled to a timsTOF Pro mass spectrometer enable high sample throughput (60+ samples/day) with high sensitivity

  • Parallel accumulation – serial fragmentation (PASEF): This technology can fragment over 100 peptides per second, increasing depth of coverage

  • Label-free quantification: Compare abundances across different conditions to identify specific interactors

  • Cross-linking mass spectrometry (XL-MS): Adds structural information about protein complex organization

For analyzing YRM1 interactome data:

  • Two-dimensional analysis strategy: Score interactions based on both enrichment and reproducibility

  • Comparison to known complexes: Validate findings against established protein interaction databases

  • Network analysis: Identify functional modules within the interactome

These approaches have successfully identified thousands of interactions in large-scale interactome studies, with high reproducibility and coverage of expressed proteins .

How do I distinguish between specific YRM1 interactors and common contaminants in immunoprecipitation-mass spectrometry experiments?

Distinguishing specific YRM1 interactors from contaminants requires rigorous analytical approaches:

  • Contaminant repositories: Compare your results with databases of common contaminants like the Contaminant Repository for Affinity Purification (CRAPome)

  • Statistical filtering: Apply methods like SAINT (Significance Analysis of INTeractome) to score interaction significance

  • Quantitative comparison: Compare enrichment ratios between YRM1 pull-downs and negative controls

  • Reciprocal pull-downs: Verify interactions by performing pull-downs of putative interacting partners

Implement a scoring system that considers both enrichment fold-change and statistical significance to prioritize likely true interactors.

What bioinformatic approaches can help interpret YRM1 interactome data in the context of biological pathways?

To contextualize YRM1 interactome data:

  • Pathway enrichment analysis: Use tools like KEGG, Reactome, or Gene Ontology to identify overrepresented biological processes

  • Network visualization: Employ Cytoscape or similar tools to visualize interaction networks

  • Integration with other omics data: Combine interactome data with transcriptomics, proteomics, or ChIP-seq data for a multi-dimensional view

  • Domain-level interaction mapping: Identify specific protein domains involved in interactions

  • Evolutionary conservation analysis: Examine conservation of interactions across species

These approaches can reveal functional modules and suggest biological roles for observed interactions, transforming an interactome map into mechanistic insights about YRM1 function.

How can I leverage the Antibody Registry to improve YRM1 antibody selection and experimental reproducibility?

The Antibody Registry provides powerful tools for antibody selection and experimental design:

  • RRID search: Search for previously used YRM1 antibodies with their performance history in published literature

  • Citation tracking: Find papers that have used specific YRM1 antibodies to evaluate their application success

  • Discontinued product tracking: The registry maintains records of antibodies no longer commercially available, providing an interface between the commercial marketplace and scientific literature

The registry has been used to cite antibodies 343,126 times between February 2014 and August 2022 , creating a valuable resource for identifying well-validated reagents. This approach significantly improves experimental reproducibility by ensuring proper reagent documentation.

What novel antibody engineering approaches might improve YRM1 antibody performance for challenging applications?

Innovative antibody engineering approaches include:

  • In-silico antibody design: Deep learning approaches can generate novel antibody sequences with high medicine-likeness and humanness while avoiding chemical liabilities

  • Targeted internal epitope recognition: Developing antibodies against conserved internal epitopes rather than variable surface domains

  • Nanobody and single-domain antibody formats: Smaller antibody formats may access epitopes inaccessible to conventional antibodies

  • Multi-specific antibodies: Engineer antibodies that simultaneously recognize multiple epitopes on YRM1 for increased specificity

Research has shown that in-silico generated antibodies perform well in experimental validation, with samples of 51 generated antibodies expressing successfully in mammalian cells and showing desirable developability attributes .

How might advances in mass spectrometry technology enhance YRM1 interactome studies?

Recent advances in mass spectrometry offer new opportunities for YRM1 interactome research:

  • Increased throughput: Systems like the Evosep One enable analysis of 60+ samples per day, facilitating large-scale interactome mapping

  • PASEF technology: Allows fragmentation of over 100 peptides per second, dramatically increasing analytical depth

  • Data-independent acquisition (DIA): Captures comprehensive peptide fragmentation data, improving reproducibility and quantification

  • Ion mobility separation: Adds an additional dimension of separation, improving detection of low-abundance interactors

  • Advanced data analysis: Machine learning approaches can improve identification of true interactors from background

These technologies have enabled comprehensive interactome studies with high success rates for pull-downs and near-complete coverage of expressed proteins, facilitating novel analytical strategies that efficiently score interactions .

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