ARF9 Antibody

Shipped with Ice Packs
In Stock

Description

Auxin Response Factor (ARF) Family and Antibodies

ARFs are transcriptional regulators critical for auxin signaling in plants. While ARF9 is part of this family, the search results focus on other ARF members (e.g., ARF1, ARF5, ARF7, ARF19) and their associated antibodies:

Key Findings:

  • ARF1/ARF3/ARF5/ARF6 Antibody (MA3-060):

    • Target: Detects ARF1, ARF3, ARF5, and ARF6 in human, mouse, and rat tissues .

    • Applications: Validated for Western blot (WB), immunofluorescence (IF), and immunoprecipitation (IP) .

    • Epitope: Recognizes recombinant human ARF1 .

    • Molecular Weight: Detects a ~21 kDa band corresponding to ARF proteins .

AntibodyTarget ARFsApplicationsSpecies ReactivityReference
MA3-060 (1D9)ARF1, ARF3, ARF5, ARF6WB, IF, IP, ICCHuman, Mouse, Rat

AF9 (MLLT3) Antibodies

AF9 (ALL1-fused gene from chromosome 9), encoded by MLLT3, is a transcriptional coactivator implicated in leukemia. Antibodies targeting AF9 are well-documented:

Anti-AF9 Antibody (ab154492):

  • Host: Rabbit polyclonal .

  • Applications: Validated for WB, IHC-P, ICC/IF .

  • Immunogen: Recombinant fragment (Human MLLT3 aa 250–550) .

  • Key Data:

    • Detects a ~63 kDa band in THP1 lysates .

    • Localizes AF9 to nuclei and cytoplasmic compartments in HeLa cells .

AntibodyTargetApplicationsSpecies ReactivityReference
ab154492AF9 (MLLT3)WB, IHC-P, ICC/IFHuman, Mouse

Antibody Validation Methodologies

Robust validation is critical for ensuring antibody specificity. Key approaches include:

  • CRISPR/Cas9 Knockout (KO) Validation:

    • KO cell lines (e.g., HEK-293) confirm antibody specificity by comparing parental and KO lysates .

    • Example: C9ORF72 antibodies validated using WT and KO mouse brain extracts .

  • Proteomic Screening:

    • Databases like PaxDb prioritize high-expressing cell lines for validation (e.g., HEK-293 for C9ORF72) .

  • Multi-Assay Characterization:

    • Antibodies are tested across WB, IP, IF, and IHC to confirm cross-application reliability .

Challenges in Antibody Development

  • Epitope Accessibility:

    • Conformation-dependent antibodies may fail in denatured conditions (e.g., WB) .

  • Cross-Reactivity:

    • Antibodies like MA3-060 target multiple ARFs due to sequence homology .

  • Reproducibility:

    • Non-specific antibodies (e.g., anti-C9ORF72) have been used in highly cited studies despite validation failures .

Future Directions

  • Recombinant Antibodies:

    • Phage/yeast display libraries enable high-throughput screening without animal use .

  • Public Repositories:

    • Initiatives like NeuroMab provide sequences and protocols for monoclonal antibodies .

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Made-to-order (14-16 weeks)
Synonyms
ARF9 antibody; At4g23980 antibody; T19F6.20 antibody; T32A16.150Auxin response factor 9 antibody
Target Names
ARF9
Uniprot No.

Target Background

Function
Auxin response factors (ARFs) are transcription factors that bind specifically to the DNA sequence 5'-TGTCTC-3', located within auxin-responsive promoter elements (AuxREs). They can act as either transcriptional activators or repressors. The formation of heterodimers with Aux/IAA proteins can modulate their ability to regulate the expression of early auxin response genes.
Database Links

KEGG: ath:AT4G23980

STRING: 3702.AT4G23980.1

UniGene: At.3396

Protein Families
ARF family
Subcellular Location
Nucleus.
Tissue Specificity
Expressed in the whole plant.

Q&A

Experimental Design for ARF9 Antibody Studies

Q: How can researchers design experiments to study the specificity and efficacy of ARF9 antibodies in various biological contexts? A: To study ARF9 antibodies, researchers should employ a multi-faceted approach:

  • Phage Display Experiments: Use phage display libraries to select antibodies with specific binding properties for ARF9. This involves varying amino acid sequences in the antibody's complementarity-determining regions (CDRs) to achieve diverse specificity profiles .

  • Immunoblotting and Immunoprecipitation: Validate antibody specificity using immunoblotting and immunoprecipitation techniques. This ensures that the antibodies specifically recognize ARF9 without cross-reacting with other proteins .

  • Cell Line Models: Utilize cell lines with high ARF9 expression, and apply CRISPR/Cas9 knockout techniques to confirm antibody specificity by comparing parental and knockout cells .

Data Analysis and Contradiction Resolution

Q: How can researchers analyze and resolve contradictions in data from ARF9 antibody studies? A: Analyzing contradictions in ARF9 antibody data involves:

  • Meta-Analysis: Combine data from multiple studies to assess the consistency of findings. This helps identify potential biases and variability across different experimental setups .

  • Sensitivity Analysis: Perform sensitivity analyses to evaluate how robust the findings are to changes in study parameters or assumptions. This can help resolve discrepancies by identifying factors contributing to variability .

  • Experimental Replication: Conduct replication studies to verify findings and assess the reproducibility of results across different laboratories and conditions .

Advanced Research Questions: Epitope Mapping and Structural Analysis

Q: How can researchers map the epitopes recognized by ARF9 antibodies and analyze their structural implications? A: To map epitopes and analyze structural implications:

  • Epitope Mapping Techniques: Employ techniques such as peptide arrays or mutagenesis to identify specific regions on ARF9 recognized by the antibodies. This helps understand how structural changes might affect antibody binding .

  • Structural Biology Methods: Use X-ray crystallography or cryo-electron microscopy to determine the three-dimensional structure of ARF9-antibody complexes. This provides insights into the molecular interactions and structural changes induced by antibody binding .

Methodological Considerations for ARF9 Antibody Validation

Q: What methodological considerations are crucial for validating ARF9 antibodies in research settings? A: Validating ARF9 antibodies requires careful consideration of:

  • Antigen Preparation: Ensure that the antigen used for antibody generation or validation is correctly prepared and purified to avoid cross-reactivity with other proteins .

  • Batch-to-Batch Variability: Report batch numbers and assess variability between different batches of antibodies, especially for polyclonal antibodies .

  • Species-Specificity: Clearly document which species the antibodies are used for, as specificity can vary across species .

Integration of Computational Tools in ARF9 Antibody Design

Q: How can computational tools enhance the design and specificity of ARF9 antibodies? A: Computational tools can significantly enhance ARF9 antibody design by:

  • Biophysics-Informed Modeling: Use computational models to predict antibody binding modes and design antibodies with customized specificity profiles. This approach helps in discriminating between very similar epitopes .

  • High-Throughput Sequencing Analysis: Analyze sequencing data from phage display experiments to identify novel antibody sequences with desired binding properties .

Challenges in ARF9 Antibody Research

Q: What are some of the challenges researchers face when working with ARF9 antibodies, and how can they be addressed? A: Challenges include:

  • Specificity and Cross-Reactivity: Ensure that antibodies are highly specific to ARF9 to avoid false positives. This can be addressed through rigorous validation using knockout cell lines and immunoprecipitation .

  • Limited Library Size: For phage display experiments, the library size may limit the diversity of antibodies obtained. This can be mitigated by using high-throughput sequencing to analyze a larger number of variants .

Future Directions in ARF9 Antibody Research

Q: What are some future directions for research involving ARF9 antibodies? A: Future research should focus on:

  • Therapeutic Applications: Explore the potential therapeutic applications of ARF9 antibodies, such as targeting specific cellular processes or diseases associated with ARF9 dysregulation.

  • Structural and Functional Studies: Conduct detailed structural and functional studies to understand how ARF9 antibodies interact with their target and modulate biological pathways.

Data Table Example:

AntibodySpecificityValidation MethodApplication
ARF9-Ab1High specificity to ARF9Immunoblotting, IPResearch tool for studying ARF9 function
ARF9-Ab2Cross-reacts with similar proteinsPhage display selectionNeeds further optimization for specificity
  • Specificity and Validation: ARF9 antibodies require rigorous validation to ensure specificity and avoid cross-reactivity.

  • Experimental Design: Phage display and CRISPR/Cas9 knockout techniques are crucial for designing and validating ARF9 antibodies.

  • Computational Tools: Biophysics-informed modeling enhances antibody design by predicting binding modes and specificity profiles.

  • Future Directions: Therapeutic applications and detailed structural studies are promising areas for future research.

Quick Inquiry

Personal Email Detected
Please use an institutional or corporate email address for inquiries. Personal email accounts ( such as Gmail, Yahoo, and Outlook) are not accepted. *
© Copyright 2025 TheBiotek. All Rights Reserved.