Abstract
To screen host proteins that interact with enterohemorrhagic Escherichia coli O157:H7 EspF. Flow cytometry and high-throughput sequencing were used to screen interacting proteins. Molecular function, biological processes and Kyoto Encyclopedia of Genes and Genomes pathways were studied using the DAVID online tool. Glutathione S-transferase pull down and dot blotting were used to verify the interactions. 293 host proteins were identified to associate with EspF. They were mainly enriched in RNA splicing (p=0.005), ribosome structure (p=0.012), and involved in 109 types of signaling pathways. SNX9 and ANXA6 were confirmed to interact with EspF. EspF interacts with ANXA6; they may form a complex to manipulate the process of phagocytosis; EspF plays a highlighted pathogenic role in enterohemorrhagic E. coliinfection process.
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