PIWI Takes a Giant Step.

Xiao, Yibei; Ke, Ailong · Cell · 2016

basic_science · Level V

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Abstract

piRNA guides the action of PIWI proteins to silence deleterious transposons in animal reproductive tissues. Biogenesis of piRNA-induced silencing complex (piRISC) involves a multi-step process. In this issue, Matsumoto et al. report the first crystal structure of a PIWI-clade protein displaying a guide RNA, ready for action.

Medical subject headings