has role protective antigen role protective antigen Human Immunodeficiency Virus protein Gag protein from SIV-mnd 2 protein A novel primate lentivirus was identified in Mandrillus sphinx. One of the newly isolated SIV strains was intravenously inoculated into two rhesus macaques and resulted in chronic infection. These SIVs do not cluster with SIVmndGB1, the former representative strain of SIVmnd, but form a new, independent lineage. These results indicate that these SIVmnds are a novel type of SIVmnd and have infected Cameroonian mandrills for a long time. To date, M. sphinx is the only primate species other than humans that is naturally infected with two different types of SIV [PubMed: 11522184]. Allen Xiang Oliver He Protegen ID: 98; NCBI Gene GI: 956108; NCBITaxon: 159122