atg43 Antibody

Atg43 Protein Overview

Atg43 is a 244-amino-acid mitochondrial outer membrane (MOM) protein critical for mitophagy in fission yeast . Its structure includes:

• N-terminal region (aa 21–40): Contains an AIM/LIR motif (Y28ELI31) essential for binding Atg8, a ubiquitin-like protein on phagophore membranes .

• C-terminal region (aa 185–224): Predicted transmembrane domain anchoring Atg43 to the MOM .

Key Functions:

• Tethers isolation membranes (phagophores) to mitochondria via Atg8 interaction .

• Facilitates mitochondrial degradation during starvation .

• Exhibits mitophagy-independent roles in cell growth under nutrient-rich conditions .

Relevance to Antibody Development

While no commercial "atg43 antibody" is mentioned in the search results, experimental data suggest potential epitopes for antibody targeting:

• N-terminal region (aa 1–150): Used to generate polyclonal antibodies for immunoblotting and immunoprecipitation in fission yeast studies .

• FLAG-tagged constructs: Reportedly employed for affinity purification and localization studies .

Table 1: Atg43 Protein Features

Potential Antibody Applications

Antibodies targeting Atg43 could facilitate:

• Immunoblotting: Detection of Atg43 expression in mitophagy-deficient mutants ( ).

• Immunoprecipitation: Mapping interactions with Atg8 or MIM complex proteins .

• Immunofluorescence: Localization studies of Atg43 on mitochondria .

Commercial Availability: As of the provided data cutoff (2021), no commercial antibodies for Atg43 are cataloged in the search results. Researchers may need to generate custom antibodies using epitopes like the N-terminal region (aa 1–150) or C-terminal FLAG-tagged constructs .

Future Research Directions

1. Antibody Validation: Develop and validate antibodies for cross-species reactivity (e.g., in budding yeast or mammalian models).

2. Epitope Mapping: Investigate whether antibodies targeting the AIM motif disrupt Atg8 binding and mitophagy .

3. Therapeutic Implications: Explore Atg43 as a biomarker for mitochondrial dysfunction in neurodegenerative diseases .