Document 0422 DOCN M9490422 TI The p15gag and p12gag regions are both necessary for the pathogenicity of the murine AIDS virus. DT 9411 AU Kubo Y; Kakimi K; Higo K; Wang L; Kobayashi H; Kuribayashi K; Masuda T; Hirama T; Ishimoto A; Department of Viral Oncology, Kyoto University, Japan. SO J Virol. 1994 Sep;68(9):5532-7. Unique Identifier : AIDSLINE MED/94335065 AB The defective murine AIDS (MAIDS) virus has unique sequences in its p15gag and p12gag regions. To clarify whether these sequences are responsible for the development of MAIDS, we constructed recombinant viruses by replacing various regions of the gag gene of the nonpathogenic replication-competent LP-BM5 ecotropic virus with those of the MAIDS virus. Recombinants containing both unique sequences of the MAIDS virus were replication defective and induced MAIDS. However, a recombinant containing either the p15gag or p12gag region of the MAIDS virus was also replication defective but nonpathogenic in mice. A recombinant virus containing only the p30gag region of the MAIDS virus was replication competent and nonpathogenic. These results indicate that the p15gag and p12gag regions of the MAIDS virus do not function like those of replication-competent viruses and that both of the unique sequences in the p15gag and p12gag regions are required to develop MAIDS. DE Animal Chimeric Proteins Gene Products, gag/*PHYSIOLOGY Leukemia Viruses, Murine/*PATHOGENICITY Mice Mice, Inbred C57BL Murine Acquired Immunodeficiency Syndrome/*MICROBIOLOGY Support, Non-U.S. Gov't Support, U.S. Gov't, P.H.S. Virus Replication JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).