At3g01270 Antibody

Introduction to At3g01270 Antibody

The At3g01270 antibody is a specialized immunological tool targeting the protein encoded by the At3g01270 gene in Arabidopsis thaliana. This gene belongs to the pectate lyase (PLL)/Amb a 1 allergen family (IPR002022) , with roles in pollen development, cell wall modification, and reproductive processes. The antibody enables detection and functional characterization of this protein in plant biology research.

Genetic Context

• Locus: At3g01270 (chromosome 3, A. thaliana)

• Gene Family: Pectate lyase/Amb a 1 allergen (IPR002022) .

• Expression: Pollen-specific, with transcripts detected in mature pollen grains and tubes .

Protein Structure and Function

• Function: The encoded protein, Pectate Lyase-Like 3 (PLL3), facilitates cell wall remodeling by cleaving α-1,5-linked arabinans or homogalacturonan in pectin .

• Role in Pollen: Critical for pollen tube emergence and growth by modifying the pollen cell wall .

Research Applications of At3g01270 Antibody

The antibody is utilized in:

• Western Blotting: Detects PLL3 (~60 kDa) in pollen extracts .

• Protein Interaction Studies: Confirmed binding to cytosolic calmodulin-binding protein NPG1 in yeast two-hybrid assays .

• Localization: Immunolocalization in pollen cytosol and cell walls using fluorescence-tagged constructs .

Functional Insights

• Pollen Germination: At3g01270 knockdown reduces pollen germination rates by 30–40%, implicating PLL3 in cell wall loosening .

• Cell Wall Dynamics: PLL3 interacts with NPG1, a calmodulin-binding protein, to regulate enzymatic activity during tube growth .

Antibody Validation

• Western Blot: Detected PLL3-GFP fusion proteins in transgenic pollen tubes .

• Pull-Down Assays: Confirmed interaction with NPG1 using T7-tag and S-protein antibodies .

Expression Profiling

Technical Considerations

• Storage: Stable at -80°C for long-term use; avoid freeze-thaw cycles.

• Limitations: Requires native or denaturing conditions depending on application (e.g., non-reducing buffers for epitope integrity) .

Relevance in Plant Biology

The At3g01270 antibody has advanced understanding of:

• Pollen Tube Guidance: PLL3-mediated cell wall modifications enable penetration through stigmatic tissues .

• Allergen Research: Homology to Amb a 1 allergens highlights potential cross-disciplinary applications .

Future Directions

• Structural Studies: Cryo-EM to resolve PLL3-NPG1 interaction interfaces.

• Agricultural Biotechnology: Engineering pollen-specific enzymes to improve crop fertility .