5YGC:
reference: Structural insights into the sequence-specific recognition of Piwi by Drosophila Papi., Zhang Y, Liu W, Li R, Gu J, Wu P, Peng C, Ma J, Wu L, Yu Y, Huang Y, Proc Natl Acad Sci U S A. 2018 Mar 27;115(13):3374-3379. doi:, 10.1073/pnas.1717116115. Epub 2018 Mar 12. PMID: 29531043

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