Protegen ID Gene Name Sequence Strain (Species/Organism) NCBI Gene ID NCBI Nucleotide GI NCBI Protein GI Locus Tag Genbank Accession Protein Accession Protein Name Protein Annotation Molecule Role Molecule Role Annotation COG PMID 4965 nsp 3a Feline infectious peritonitis virus 10040181 315192965 FIPV_gp03 AY994055 YP_004070195 putative 3a protein Virulence factor MUTATION: A 3abc deletion mutant in Feline infectious peritonitis virus (FIPV) was attenuated in kittens [Ref7383:Haijema et al., 2004] 15047802 4966 nsp 3b Feline infectious peritonitis virus 10040182 315192966 FIPV_gp04 AY994055 YP_004070196 putative 3b protein Virulence factor MUTATION: A 3abc deletion mutant in Feline infectious peritonitis virus (FIPV) was attenuated in kittens [Ref7383:Haijema et al., 2004]. 15047802 4967 nsp 3c Feline infectious peritonitis virus 10040183 FIPV_gp05 Virulence factor MUTATION: A 3abc deletion mutant in Feline infectious peritonitis virus (FIPV) was attenuated in kittens [Ref7383:Haijema et al., 2004]. 15047802 4968 nsp 7a Feline infectious peritonitis virus 10040187 315192970 FIPV_gp09 AY994055 YP_004070200 non-structural protein 7a Virulence factor MUTATION: A 7ab deletion mutant in Feline infectious peritonitis virus is attenuated in kittens [Ref7383:Haijema et al., 2004]. 15047802 4969 nsp 7b Feline infectious peritonitis virus 10040188 315192971 FIPV_gp10 AY994055 YP_004070201 non-structural protein 7b Virulence factor MUTATION: A 7ab deletion mutant in Feline infectious peritonitis virus is attenuated in kittens [Ref7383:Haijema et al., 2004]. 15047802 5104 Spike protein 556925469 spike protein Virulence factor Mar mutant viruses are mutated several amino acids of the neutralizing epitope of Spike protein, compared with the parent strain, FIPV 79-1146. We also discovered that amino acid mutation in the neutralizing epitope reduced viral replication in monocytes/macrophages. We also demonstrated that the mutation or deletion of two nucleotides in 7b gene abrogate the virulence of strain FIPV 79-1146.[Ref7502:Takano et al., 2011]; 21211540