3N9P:
reference: Structural insights into a dual-specificity histone demethylase ceKDM7A from Caenorhabditis elegans., Yang Y, Hu L, Wang P, Hou H, Lin Y, Liu Y, Li Z, Gong R, Feng X, Zhou L, Zhang W, Dong Y, Yang H, Lin H, Wang Y, Chen CD, Xu Y, Cell Res. 2010 Aug;20(8):886-98. Epub 2010 Jun 22. PMID: 20567261

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