7BU9:
reference: Molecular basis for histone H3 "K4me3-K9me3/2" methylation pattern readout by Spindlin1., Zhao F, Liu Y, Su X, Lee JE, Song Y, Wang D, Ge K, Gao J, Zhang MQ, Li H, J Biol Chem. 2020 Sep 29. pii: RA120.013649. doi: 10.1074/jbc.RA120.013649. PMID: 32994220

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