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  • Title: Rev-ing up post-transcriptional HIV-1 RNA expression.
    Author: Yedavalli VS, Jeang KT.
    Journal: RNA Biol; 2011; 8(2):195-9. PubMed ID: 21358275.
    Abstract:
    The post-transcriptional export of spliced and unspliced HIV-1 (human immunodeficiency virus type 1) RNAs from the nucleus to the cytoplasm is a complex process. Part of the complexity arises from the fact that eukaryotic cells normally retain unspliced RNAs in the nucleus preventing their exit into the cytoplasm. HIV-1 has evolved a protein, Rev, that participates in the export of unspliced / partially spliced viral RNAs from the nucleus. It has been documented that several cellular factors cooperate in trans with Rev, and certain cis-RNA motifs / features are important for transcripts to be recognized by Rev and its co-factors. Here, the post-transcriptional activities of Rev are discussed in the context of a recent finding that an RNA cap methyltransferase contributes to the expression of unspliced / partially spliced HIV-1 transcripts.
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