HIV-1 Rev oligomerization is not obligatory in the presence of an extra basic domain
Peer reviewed, Journal article
Peer reviewed
Date
2005-06-10Metadata
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Original version
https://doi.org/10.1186/1742-4690-2-39Abstract
Background: The HIV-1 Rev regulatory protein binds as an oligomeric complex to viral RNA mediating nuclear export of incompletely spliced and non-spliced viral mRNAs encoding the viral structural proteins. However, the biological significance of the obligatory complex formation of Rev upon the viral RNA is unclear. Results: The activity of various fusion proteins based on the negative oligomerization-defect Rev mutant M4 was tested using Rev dependent reporter constructs. An artificial M4 mutant dimer and an M4 mutant containing an extra basic domain from the HTLV-I Rex protein exhibited nearly full activity when compared to wild type Rev. Conclusion: Rev dimerization appears to be required to expose free basic domains whilst the Rev oligomeric complex remains bound to viral RNA via other basic domains.
Publisher
BioMed CentralJournal
RetrovirologyCopyright
Clemens Furnes et al.; licensee BioMed Central Ltd.Copyright 2005 Furnes et al; licensee BioMed Central Ltd.