6E29:
reference: Structure and Conformational Dynamics of a COMPASS Histone H3K4 Methyltransferase Complex., Qu Q, Takahashi YH, Yang Y, Hu H, Zhang Y, Brunzelle JS, Couture JF, Shilatifard A, Skiniotis G, Cell. 2018 Aug 23;174(5):1117-1126.e12. doi: 10.1016/j.cell.2018.07.020. Epub, 2018 Aug 9. PMID: 30100186

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