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Proximity extracellular protein-protein interaction analysis of EGFR using AirID-conjugated fragment of antigen binding.


ABSTRACT: Receptor proteins, such as epidermal growth factor receptor (EGFR), interact with other proteins in the extracellular region of the cell membrane to drive intracellular signalling. Therefore, analysis of extracellular protein-protein interactions (exPPIs) is important for understanding the biological function of receptor proteins. Here, we present an approach using a proximity biotinylation enzyme (AirID) fusion fragment of antigen binding (FabID) to analyse the proximity exPPIs of EGFR. AirID was C-terminally fused to the Fab fragment against EGFR (EGFR-FabID), which could then biotinylate the extracellular region of EGFR in several cell lines. Liquid Chromatography-Mass Spectrometry (LC-MS/MS) analysis indicated that many known EGFR interactors were identified as proximity exPPIs, along with many unknown candidate interactors, using EGFR-FabID. Interestingly, these proximity exPPIs were influenced by treatment with EGF ligand and its specific kinase inhibitor, gefitinib. These results indicate that FabID provides accurate proximity exPPI analysis of target receptor proteins on cell membranes with ligand and drug responses.

SUBMITTER: Yamada K 

PROVIDER: S-EPMC10721602 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature

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Proximity extracellular protein-protein interaction analysis of EGFR using AirID-conjugated fragment of antigen binding.

Yamada Kohdai K   Shioya Ryouhei R   Nishino Kohei K   Furihata Hirotake H   Hijikata Atsushi A   Kaneko Mika K MK   Kato Yukinari Y   Shirai Tsuyoshi T   Kosako Hidetaka H   Sawasaki Tatsuya T  

Nature communications 20231214 1


Receptor proteins, such as epidermal growth factor receptor (EGFR), interact with other proteins in the extracellular region of the cell membrane to drive intracellular signalling. Therefore, analysis of extracellular protein-protein interactions (exPPIs) is important for understanding the biological function of receptor proteins. Here, we present an approach using a proximity biotinylation enzyme (AirID) fusion fragment of antigen binding (FabID) to analyse the proximity exPPIs of EGFR. AirID w  ...[more]

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