COQ2 and Middle East respiratory syndrome: Using the dot blot assay, we also tested the binding of MSA1 and MSA5 with an additional four relevant proteins, including the RBD and the spike protein of SARS-CoV-1, the RBD of Middle East Respiratory Syndrome (MERS) and the RBD of Coronavirus HCoV-229E, a seasonal human coronavirus; the data are provided in Supplementary Figure S5.