FRO2 Antibody

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Description

Protein Complex Formation

FRO2 interacts with IRT1 and AHA2 in root epidermal cells to form a high-affinity iron uptake complex . Co-immunoprecipitation (Co-IP) experiments confirmed:

  • Interaction partners:

    ProteinRoleMethod
    IRT1Fe²⁺ transporterCo-IP with mCitrine
    AHA2Proton-ATPase (pH regulation)Split-Ub assay

This complex enhances iron solubility and uptake efficiency under iron-deficient conditions .

Posttranscriptional Regulation

  • Iron-dependent expression: FRO2 mRNA accumulates under iron starvation but requires low iron for enzymatic activity .

  • Tissue specificity: Expressed in root epidermal cells and anther filaments, critical for iron delivery to pollen grains .

Functional Insights from Overexpression Studies

Transgenic 35S-FRO2 plants show:

  • Enhanced iron uptake: Improved growth on low-iron media due to elevated Fe³⁺ reductase activity .

  • Copper reductase activity: FRO2 reduces Cu²⁺ to Cu⁺, though this role remains secondary to iron uptake .

Technical Considerations

  • Controls: Use fro2 mutants (e.g., frd1-1) as negative controls in Co-IP/Western blot experiments .

  • Optimization: Antibody performance may vary with protein extraction buffers; validate for specific protocols .

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
FRO2 antibody; FRD1 antibody; At1g01580 antibody; F22L4.12Ferric reduction oxidase 2 antibody; AtFRO2 antibody; EC 1.16.1.7 antibody; Ferric-chelate reductase 2 antibody; Protein FERRIC CHELATE REDUCTASE DEFECTIVE 1 antibody
Target Names
FRO2
Uniprot No.

Target Background

Function
FRO2 is a flavocytochrome that facilitates electron transfer across the plasma membrane. It reduces ferric iron chelates to form soluble ferrous iron in the rhizosphere, contributing to iron delivery to developing pollen grains. Additionally, FRO2 functions as a copper-chelate reductase. It plays a role in glycine betaine-mediated chilling tolerance and the regulation of reactive oxygen species accumulation.
Gene References Into Functions
  1. Induction of FRO2 gene expression serves as a reliable indicator of iron deficiency in plant roots. PMID: 21334215
  2. Nitric oxide (NO) acts downstream of auxin to activate FRO2 in response to iron deficiency in roots. PMID: 20699398
  3. Research has revealed a novel physiological role for FRO2: inhibiting the accumulation of reactive oxygen species (ROS) during chilling conditions. PMID: 18513375
Database Links

KEGG: ath:AT1G01580

STRING: 3702.AT1G01580.1

UniGene: At.42640

Protein Families
Ferric reductase (FRE) family
Subcellular Location
Cell membrane; Multi-pass membrane protein.
Tissue Specificity
Expressed in the epidermal cells of the roots. High expression in lateral roots and root hairs. Detected in leaves, stems, siliques and in flowers in anthers and styles.

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