Restraint of Powassan virus replication by TRIM5α facilitates viral avoidance of antiviral immunity
This study reveals that primate TRIM5α proteins restrict most tick-borne orthoflaviviruses but fail to inhibit Powassan virus due to a specific NS3 mutation that enables high replication, ultimately demonstrating that TRIM5α-mediated restraint of viral replication serves as a mechanism to avoid triggering strong early innate immune responses.