dlvr.it
Virus-induced deconjugation of ISG15 dysregulates innate immunity and cellular metabolism
SARS-CoV-2 encodes a viral deISGylase called PLpro, but its physiological functions and direct substrates remain elusive. Using a deISGylation-activity-ablated recombinant SARS-CoV-2, Zhu et al. show that deISGylation activity is required for innate immune evasion and, furthermore, relieves metabolic restriction of viral replication by modulating the activity of key enzymes in glycolysis, the pentose phosphate pathway, and redox homeostasis.