Acknowledgement
We thank Dr. Dongwoo Shin for providing Salmonella protease mutant strains. This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning [NRF-2022R1A2B5B02002256, NRF-2022R1A4A1025913, and NRF-2020M3A9H5104235 to E.-J.L.] and a grant from Korea University.
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