2019-Novel Coronavirus: Challenges In the RCSB database, only one PDB (PDB ID: 6LU7) is there on the 2019-nCoV which is in complex with N3 (inhibitor). The complete sequence of the 2019-nCoV is available.[93] However, it is only 95% similar to bat-SL-CoVZC45 and 88% to SIRS CoV-ZSc (nucleotide blast, NCBI). This highlights the amount of recombination processes or changes that occurred in the 2019-nCoV and changes in protein structural and functional levels.