2',5'-oligoadenylate, 2-5A, 2H, 2H-PE, 2H-phosphoesterase, BtCoV-HKU5, BtCoV-SC2013, Calu, Calu-3 cells, IFN, MERS, MERS NS4b, MERS-CoV, MERS-CoV NS4b, Middle East Respiratory Syndrome Coronavirus, Middle East respiratory syndrome, Middle East respiratory syndrome coronavirus, NS3, NS4b, NS4b proteins, NS5, OAS, OAS-RNase, PDE, RNase L, SARS-, SARS-CoV, amino, bat, bat CoV, bat CoV NS4b accessory proteins, bat betacoronaviruses, cytoplasmic MERS-CoV NS4b protein, dsRNA, human, interferon, lineage ABetacoronavirusPDEs, murine coronavirus, murine coronavirus NS2, oligoadenylate synthetase, phosphodiesterase, rotavirus, rotavirus gene, rotavirus gene-encoded PDEs, severe, severe acute respiratory syndrome coronavirus, ssRNA, type I interferon, viral and host single-stranded RNA, viral double-stranded RNA