alexa Human immunodeficiency virus type 1 2-LTR circles reside in a nucleoprotein complex which is different from the preintegration complex.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

Author(s): Bukrinsky M, Sharova N, Stevenson M

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Abstract The preintegration complex of human immunodeficiency virus type 1 (HIV-1) is a large nucleoprotein complex containing viral nucleic acids in association with products of the viral gag and pol genes. One of these proteins, integrase, is absolutely required for the integration and formation of the provirus. Although HIV-1-specific 2-LTR circles from nuclei of HIV-1-infected cells were found to be associated within a high-molecular-weight nucleoprotein complex, antibodies to HIV-1 integrase failed to precipitate this form of viral DNA. This result indicates that circular forms of HIV-1 DNA are not associated with integrase. These viral DNA forms seem to exist in a context of a nucleoprotein complex that is different from a preintegration complex of HIV-1.
This article was published in J Virol and referenced in Journal of Antivirals & Antiretrovirals

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