Maturation of the HIV reverse transcription complex: putting the jigsaw together

Reviews in Medical Virology - Tập 19 Số 6 - Trang 324-337 - 2009
David Warrilow1, Gilda Tachedjian, David Harrich
1Division of Infectious Diseases, Queensland Institute of Medical Research, Brisbane, Queensland 4006, Australia. [email protected]

Tóm tắt

AbstractUpon HIV attachment, fusion and entry into the host cell cytoplasm, the viral core undergoes rearrangement to become the mature reverse transcription complex (RTC). Reduced infectivity of viral deletion mutants of the core proteins, capsid and negative factor (Nef), can be complemented by vesicular stomatitis virus (VSV) pseudotyping suggesting a role for these viral proteins in a common event immediately post‐entry. This event may be necessary for correct trafficking of the early complex. Enzymatic activation of the complex occurs either before or during RTC maturation, and may be dependent on the presence of deoxynucleotides in the host cell. The RTC initially becomes enlarged immediately after entry, which is followed by a decrease in its sedimentation rate consistent with core uncoating. Several HIV proteins associated with the RTC and recently identified host‐cell proteins are important for reverse transcription while genome‐wide siRNA knockdown studies have identified additional host cell factors that may be required for reverse transcription. Determining precisely how these proteins assist the RTC function needs to be addressed. Copyright © 2009 John Wiley & Sons, Ltd.

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Reviews in Medical Virology

Tập 19 Số 6

324-337

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