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- W2070790783 abstract "Core assembly, a key step in the retroviral life cycle, is poorly understood. Previous studies have shown that the entire gag region is needed to form the assembled particles. In this report, we have shown that the assembly process is driven by recombinant capsid protein (p26) of feline immunodeficiency virus itself. Proteins are expressed in a bacterial system and soluble forms of wild-type and modified proteins are purified from bacterial extracts and are examined on gel-filtration chromatography fitted to an HPLC system. It has also been shown that changing residue Cys190 (one of the two conserved cysteines of feline immunodeficiency virus which are also conserved for all the immunodeficiency viruses including HIV) to serine by site-directed mutagenesis disrupts the assembly process. In addition, this modification causes considerable thermal instability of the protein while substitutions at nonconserved cysteines do not significantly affect the thermal stability and assembly of the protein. These findings indicate that conserved cysteine residues play a vital role in the capsid protein assembly and, therefore, are critical for virus infectivity." @default.
- W2070790783 created "2016-06-24" @default.
- W2070790783 creator A5049050135 @default.
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- W2070790783 date "2001-08-01" @default.
- W2070790783 modified "2023-10-14" @default.
- W2070790783 title "In Vitro Assembly of Feline Immunodeficiency Virus Capsid Protein: Biological Role of Conserved Cysteines" @default.
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- W2070790783 doi "https://doi.org/10.1006/abbi.2001.2449" @default.
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