3U9G:
reference: Structure of N-terminal domain of ZAP indicates how a zinc-finger protein recognizes complex RNA., Chen S, Xu Y, Zhang K, Wang X, Sun J, Gao G, Liu Y, Nat Struct Mol Biol. 2012 Mar 11;19(4):430-5. doi: 10.1038/nsmb.2243. PMID: 22407013

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