FUNCTION: Endoribonuclease that plays a central role in postnatal germ cells by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity. Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meios...
FUNCTION: Endoribonuclease that plays a central role in postnatal germ cells by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity. Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and governs the methylation and subsequent repression of transposons. Directly binds methylated piRNAs, a class of 24 to 30 nucleotide RNAs that are generated by a Dicer-independent mechanism and are primarily derived from transposons and other repeated sequence elements. Strongly prefers a uridine in the first position of their guide (g1U preference, also named 1U-bias). Not involved in the piRNA amplification loop, also named ping-pong amplification cycle. Acts as an endoribonuclease that cleaves transposon messenger RNAs. Besides their function in transposable elements repression, piRNAs are probably involved in other processes during meiosis such as translation regulation. Probable component of some RISC complex, which mediates RNA cleavage and translational silencing. Also plays a role in the formation of chromatoid bodies and is required for some miRNAs stability. Required to sequester RNF8 in the cytoplasm until late spermatogenesis; RNF8 being released upon ubiquitination and degradation of PIWIL1. {ECO:0000250|UniProtKB:Q9JMB7}.; FUNCTION: [Isoform 3]: May be a negative developmental regulator (PubMed:12037681, PubMed:16287078). {ECO:0000269|PubMed:12037681, ECO:0000269|PubMed:16287078}.
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GO - Biological processes (BP):
gene silencing by RNA [GO:0031047]; meiotic cell cycle [GO:0051321]; negative regulation of transposition [GO:0010529]; piRNA metabolic process [GO:0034587]; regulation of translation [GO:0006417]; spermatid development [GO:0007286]; spermatogenesis [GO:0007283]; spermatogenesis, exchange of chromos...
gene silencing by RNA [GO:0031047]; meiotic cell cycle [GO:0051321]; negative regulation of transposition [GO:0010529]; piRNA metabolic process [GO:0034587]; regulation of translation [GO:0006417]; spermatid development [GO:0007286]; spermatogenesis [GO:0007283]; spermatogenesis, exchange of chromosomal proteins [GO:0035093]
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GO - Molecular function (MF):
endoribonuclease activity [GO:0004521]; metal ion binding [GO:0046872]; mRNA binding [GO:0003729]; mRNA cap binding complex binding [GO:0140262]; piRNA binding [GO:0034584]; polysome binding [GO:1905538]; protein kinase binding [GO:0019901]; RNA binding [GO:0003723]; single-stranded RNA binding [GO:...
endoribonuclease activity [GO:0004521]; metal ion binding [GO:0046872]; mRNA binding [GO:0003729]; mRNA cap binding complex binding [GO:0140262]; piRNA binding [GO:0034584]; polysome binding [GO:1905538]; protein kinase binding [GO:0019901]; RNA binding [GO:0003723]; single-stranded RNA binding [GO:0003727]
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GO - Cellular component (CC):
chromatoid body [GO:0033391]; cytoplasm [GO:0005737]; dense body [GO:0097433]; nucleus [GO:0005634]; P granule [GO:0043186]...
chromatoid body [GO:0033391]; cytoplasm [GO:0005737]; dense body [GO:0097433]; nucleus [GO:0005634]; P granule [GO:0043186]
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