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Citation
Huang, X., Fejes Tóth, K., Aravin, A.A. (2017). piRNA Biogenesis in Drosophila melanogaster.  Trends Genet. 33(11): 882--894.
FlyBase ID
FBrf0237054
Publication Type
Review
Abstract

The PIWI-interacting RNA (piRNA) pathway is a conserved defense system that protects the genome integrity of the animal germline from deleterious transposable elements. Targets of silencing are recognized by small noncoding piRNAs that are processed from long precursor molecules. Although piRNAs and other classes of small noncoding RNAs, such as miRNAs and small interfering (si)RNAs, interact with members of the same family of Argonaute (Ago) proteins and their function in target repression is similar, the biogenesis of piRNAs differs from those of the other two small RNAs. Recently, many aspects of piRNA biogenesis have been revealed in Drosophila melanogaster. In this review, we elaborate on piRNA biogenesis in Drosophila somatic and germline cells. We focus on the mechanisms by which piRNA precursor transcription is regulated and highlight recent work that has advanced our understanding of piRNA precursor processing to mature piRNAs. We finish by discussing current models to the still unresolved question of how piRNA precursors are selected and channeled into the processing machinery.

PubMed ID
PubMed Central ID
PMC5773129 (PMC) (EuropePMC)
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    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Trends Genet.
    Title
    Trends in Genetics
    Publication Year
    1985-
    ISBN/ISSN
    0168-9525
    Data From Reference