Coronaviruses, enveloped positive-strand RNA viruses, generally cause mild to moderate upper-respiratory tract illness. OC43, like SARS-CoV-2, is in the genus Betacoronavirus but grouped in another subgenus called Embecovirus. The NS2 protein of HCoV-OC43 has cyclic phosphodiesterase activity, which may modulate cAMP-mediated signaling and important physiological processes such as lipid metabolism and apoptosis. HCoV-OC43 replicate principally in the upper respiratory tract epithelial cells, where they produce virus and cause local respiratory symptoms[1][2]. HCoV-OC43 Spike/S1 Protein (HEK293, His) is the recombinant Virus-derived HCoV-OC43 Spike/S1 protein, expressed by HEK293 , with C-His labeled tag.
