Piwi RNAs

Definition

Piwi-interacting RNAs (piRNAs) are a large class of small non-coding RNAs (ncRNAs), 26–31 nucleotides in length, that interact with piwi-domain-containing proteins. piRNAs function in the germline to silence genetic elements such as retrotransposons and in RNA silencing as components of the RNA-induced silencing complex (RISC).

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