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  • Title: Posttranscriptional gene silencing in Neurospora by a RecQ DNA helicase.
    Author: Cogoni C, Macino G.
    Journal: Science; 1999 Dec 17; 286(5448):2342-4. PubMed ID: 10600745.
    Abstract:
    The phenomenon of posttranscriptional gene silencing (PTGS), which occurs when a transgene is introduced into a cell, is poorly understood. Here, the qde-3 gene, which is required for the activation and maintenance of gene silencing in the fungus Neurospora crassa, was isolated. Sequence analysis revealed that the qde-3 gene belongs to the RecQ DNA helicase family. The QDE3 protein may function in the DNA-DNA interaction between introduced transgenes or with an endogenous gene required for gene-silencing activation. In animals, genes that are homologous to RecQ protein, such as the human genes for Bloom's syndrome and Werner's syndrome, may also function in PTGS.
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