The HIV-1 Rev protein: prototype of a novel class of eukaryotic post-transcriptional regulators.

Complex retroviruses, including Human Immunodeficiency Virus Type 1 (HIV-1), are characterized by the ordered temporal expression of the various viral gene products in infected cells. This effect is mediated by a novel class of RNA-sequence-specific regulatory proteins typified by the Rev trans-activator of HIV-1. Evidence suggests that Rev regulates HIV-1 gene expression by intervening in the normal pathway of eukaryotic mRNA processing and transport.