4GEM:
reference: Structure and function of Zucchini endoribonuclease in piRNA biogenesis., Nishimasu H, Ishizu H, Saito K, Fukuhara S, Kamatani MK, Bonnefond L, Matsumoto N, Nishizawa T, Nakanaga K, Aoki J, Ishitani R, Siomi H, Siomi MC, Nureki O, Nature. 2012 Nov 8;491(7423):284-7. doi: 10.1038/nature11509. Epub 2012 Oct 14. PMID: 23064230

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