RNA-BINDING PROTEIN, SSB, ZINC, HCOV, MEMBRANE, HELICASE, SARS COV, VIRAL REPLICASE, RNA REPLICATION, ATP-BINDING, NUCLEOTIDE-BINDING, RIBOSOMAL FRAMESHIFT 2J98 HUMAN CORONAVIRUS 229E NON STRUCTURAL PROTEIN 9 CYS69ALA MUTANT (NSP9)