yama, a mutant allele of Mov10l1, disrupts retrotransposon silencing and piRNA biogenesis
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چکیده
منابع مشابه
piRNA Biogenesis and Transposon Silencing in Drosophila: A Dissertation
piRNAs guide PIWI proteins to silence transposons in animal germ cells. In Drosophila, the heterochromatic piRNA clusters transcribe piRNA precursors to be transported into nuage, a perinuclear structure for piRNA production and transposon silencing. At nuage, reciprocal cycles of piRNA-directed RNA cleavage—catalyzed by the PIWI proteins Aubergine (Aub) and Argonaute3 (Ago3) in Drosophila—dest...
متن کاملThe RNA helicase MOV10L1 binds piRNA precursors to initiate piRNA processing.
Piwi-piRNA (Piwi-interacting RNA) ribonucleoproteins (piRNPs) enforce retrotransposon silencing, a function critical for preserving the genome integrity of germ cells. The molecular functions of most of the factors that have been genetically implicated in primary piRNA biogenesis are still elusive. Here we show that MOV10L1 exhibits 5'-to-3' directional RNA-unwinding activity in vitro and that ...
متن کاملMouse MOV10L1 associates with Piwi proteins and is an essential component of the Piwi-interacting RNA (piRNA) pathway.
Piwi-interacting RNAs (piRNAs) are essential for silencing of transposable elements in the germline, but their biogenesis is poorly understood. Here we demonstrate that MOV10L1, a germ cell-specific putative RNA helicase, is associated with Piwi proteins. Genetic disruption of the MOV10L1 RNA helicase domain in mice renders both MILI and MIWI2 devoid of piRNAs. Absence of a functional piRNA pat...
متن کاملDiversity of the piRNA pathway for nonself silencing: worm-specific piRNA biogenesis factors.
The PIWI-interacting RNA (piRNA) pathway protects animal germline cells from transposable elements and other genomic invaders. Although the genome defense function of piRNAs has been well established, the mechanisms of their biogenesis remain poorly understood. In this issue of Genes & Development, three groups identify novel factors required for piRNA biogenesis in Caenorhabditis elegans. Thes...
متن کاملHSP90α plays an important role in piRNA biogenesis and retrotransposon repression in mouse
HSP90, found in all kingdoms of life, is a major chaperone protein regulating many client proteins. We demonstrated that HSP90α, one of two paralogs duplicated in vertebrates, plays an important role in the biogenesis of fetal PIWI-interacting RNAs (piRNA), which act against the transposon activities, in mouse male germ cells. The knockout mutation of Hsp90α resulted in a large reduction in the...
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ژورنال
عنوان ژورنال: PLOS Genetics
سال: 2021
ISSN: 1553-7404
DOI: 10.1371/journal.pgen.1009265