HSFA6A Antibody

Shipped with Ice Packs
In Stock

Description

Target Protein: HSFA6A Overview

HSFA6A belongs to the heat shock transcription factor (HSF) family and functions as a transcriptional activator in ABA-dependent stress signaling pathways . Key features include:

PropertyDescription
Molecular FunctionBinds heat shock elements (HSEs) in promoter regions of stress-responsive genes
Cellular LocalizationDual localization: cytoplasm (basal conditions) and nucleus (stress conditions)
Stress ResponsivenessInduced by ABA, salinity, and drought – but not heat or cold stress
Regulatory MechanismActivated via ABF/AREB transcription factors binding to ABA-responsive elements

Subcellular Dynamics

Studies employing subcellular fractionation and transient expression assays demonstrated:

  • Basal state: 60-70% cytoplasmic localization in untreated protoplasts

  • Stress-induced nuclear translocation:

    • 85% nuclear accumulation under 200 mM NaCl treatment

    • No significant redistribution under heat stress (37°C)

Genetic Interaction Studies

HSFA6A antibody facilitated the characterization of transgenic lines:

  • Overexpression (OE) lines:

    • 3.8x higher survival rate than wild-type under drought stress

    • Enhanced sensitivity to 1.5 μM ABA during germination (72% inhibition vs. 43% in WT)

  • Knockout mutants:

    • No detectable HSFA6A protein via Western blot

    • Impaired induction of RD29B and RAB18 under ABA treatment

Key Applications in Experimental Systems

The HSFA6A antibody has been critical for:

ApplicationExperimental DesignKey Outcome
Chromatin ImmunoprecipitationCrosslinked seedlings + anti-HSFA6A IPIdentified direct targets: HSP17.6, HSP18.2
Protein Interaction AnalysisCo-IP with ABA signaling componentsConfirmed physical interaction with ABF2/AREB1
Stress Response QuantificationComparative Western blots under 100 μM ABA vs. control4.2x protein accumulation at 6 hr post-treatment

Research Limitations and Future Directions

Current gaps addressed through antibody-based research:

  1. Tissue-specific expression: No data on root vs. shoot protein distribution

  2. Post-translational modifications: Phosphorylation status under different stresses remains uncharacterized

  3. Interspecies conservation: Limited data on HSFA6A homologs in crops like rice or wheat

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
HSFA6A antibody; HSF19 antibody; At5g43840 antibody; MQD19.20 antibody; Heat stress transcription factor A-6a antibody; AtHsfA6a antibody; AtHsf-19 antibody
Target Names
HSFA6A
Uniprot No.

Target Background

Function
HSFA6A is a transcriptional activator that specifically binds to the DNA sequence 5'-AGAAnnTTCT-3', known as heat shock promoter elements (HSE).
Gene References Into Functions
  1. AtHsfA6a acts as a transcriptional activator of stress-responsive genes via the abscissic acid-dependent signaling pathway. PMID: 24313737
Database Links

KEGG: ath:AT5G43840

STRING: 3702.AT5G43840.1

UniGene: At.55345

Protein Families
HSF family, Class A subfamily
Subcellular Location
Nucleus.

Q&A

FAQ: HSFA6A Antibody in Academic Research

Advanced Research Questions

How to resolve discrepancies in reported HSFA6A localization under abiotic stress?

Conflicting data may arise from:

  • Stress-specific regulation: HSFA6A nuclear translocation varies with stress type (heat vs. drought) . Use subcellular fractionation + immunoblotting alongside confocal microscopy with GFP-tagged HSFA6A.

  • Antibody cross-reactivity: Validate with tissue-specific HSFA6A overexpression lines and epitope-mapping assays (see Table 1).

Table 1: HSFA6A Antibody Cross-Reactivity Profile

Target ProteinSequence Homology*Observed Cross-Reactivity?Method Used
HSFA6A (AT5G43840)100%Yes (positive control)WB, IP
HSFA6B (AT3G22830)78%NoPeptide competition
HSFA1a (AT4G36990)65%NoKnockout validation
*Homology calculated for C-terminal epitope region.

How to design experiments investigating HSFA6A’s role in ABA-mediated thermotolerance?

  • Genetic interaction studies: Combine HSFA6A mutants with ABA biosynthesis/signaling mutants (e.g., aba2, snrk2.6) under heat stress .

  • Transcriptome profiling: Use RNA-seq to identify HSFA6A-dependent ABA-responsive genes (e.g., HSP17.6, RBOHD) under dual stress.

  • Chromatin immunoprecipitation (ChIP): Verify direct binding of HSFA6A to promoters of ABA/stress-related genes using validated antibodies .

Data Contradiction Analysis

How to address inconsistent molecular weight observations for HSFA6A?

  • Post-translational modifications: Phosphorylation at Ser/Thr residues may increase apparent MW. Treat samples with λ-phosphatase prior to Western blot .

  • Alternative splicing: Check for splice variants using RT-PCR with primers spanning exon-exon junctions.

Methodological Recommendations

  • Epitope characterization: Map antibody binding via truncation mutants of HSFA6A’s C-terminal domain .

  • Multiplex assays: Pair Western blot with qRT-PCR to correlate protein levels with HSFA6A transcript dynamics under stress.

  • Functional redundancy tests: Use double mutants (e.g., hsfa6a/hsfa6b) to unmask overlapping roles with paralogs .

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.