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Specific packaging of human immunodeficiency virus type 1 (HIV-1) RNA is attributable to the high affinity of nucleocapsid (NC) sequence of Gag for the cis-acting RNA packaging signals located within the 5′ un-translated region (5′ UTR). Interestingly, we have previously reported that the T12I mutation (named MP2) within SP1 of Gag prevented incorporation of spliced viral RNA into mutated viruses...
The Mason-Pfizer monkey virus (M-PMV) Gag protein follows a morphogenesis pathway in which immature capsids are preassembled within the cytoplasm before interaction with and budding through the plasma membrane. Intracytoplasmic assembly is facilitated by sequences within the p12 domain of Gag that we have termed the Internal Scaffold Domain (ISD). If M-PMV utilizes an ISD then what provides the equivalent...
The cytoplasmic domain of human immunodeficiency virus type 1 (HIV-1) envelope (Env) transmembrane protein gp41 interacts with the viral matrix MA protein, which facilitates incorporation of the trimeric Env complex into the virus. It is thus feasible to design an anti-HIV strategy targeting this interaction. We herein describe that Gag expression can be downregulated by a cytoplasmic domain fusion...
In complex retroviruses including simian immunodeficiency virus (SIV) and human immunodeficiency virus type 1 (HIV-1), the major structural proteins are encoded by the gag gene and translated as a precursor polyprotein, Pr55 Gag . An internal ribosome entry site (IRES) within the coding region of HIV-1 and HIV type 2 (HIV-2) gag RNA mediates expression of N-terminally truncated isoforms of...
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