The structure of nucleocapsid protein (N protein) is conserved across different members of the CoV family. The three characteristic intrinsically disordered regions (IDRs) of the nucleocapsid (N) protein are the N-arm, central linker (CL), and the C-tail.[4] The NTD and the CTD are the major structural and functional domain of the nucleocapsid protein. The most important function of the N protein NTD is RNA binding, while the primary job of the CTD is dimerization.[49] As the CL region is rich in arginine and serine residue content, it also contains a large number of phosphorylation sites.[26] The C-terminal IDRs take an important part in nucleocapsid protein oligomerization and N–M protein interactions.[67]