Fig. 1.

The schematic illustration of (a) full genome of SARS-CoV-2, (b) representation of viral particles of SARS-CoV-2, and (c) functional domains of spike protein (S) for SARS-C0V-2. (a) The open reading frame 1a and 1ab (ORF 1a and 1ab) encoded by non-structure proteins are represented in red. The green color denotes the spike protein. The purple color reported the accessory proteins, whereas the orange line on the top characterizes the length of genomic viral RNA. (b) The pink, red, and green colors represent spike, membrane, and envelop proteins respectively, while the orange thread inside the envelope shows the viral RNA and small dark blue balls signifies the nucleocapsid protein (N). (c) The S1/S2 subunits are reported on the top with red arrows, while the RBD highlights below the S1/S2 subunits. The pink, red, sky, orange, blue, teal and brown color represents the signal peptide (SP), receptor-binding domain (RBD), fusion peptide (FP), heptad repeat-1 (HR1), heptad repeat-2 (HR2), transmembrane domain (TM), and cytoplasm domain (CP) respectively, whereas the bottom cerulean line highlights the length of amino acids. [60]. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)