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. 2020 Aug 26;11:4263. doi: 10.1038/s41467-020-18067-7

Fig. 1. Mcm2–7 loading does not require intrinsically disordered N-terminal regions (IDRs) of loading factors.

Fig. 1

a SDS-PAGE gel of purified Drosophila loading factors, either full-length proteins or constructs lacking IDRs (ΔN). b DmMcm2–7 is recruited (low-salt wash) and loaded (high-salt wash) in an ATP-dependent manner by full-length and IDR-less DmOrc1, DmCdc6, and DmCdt1 with similar efficiency. Note that FL-Cdt1, Cdt1ΔN, Cdc6, Cdc6ΔN, and to some extent FL-Orc1 associate with beads nonspecifically. c Loaded DmMcm2–7 are double-hexamers. DmMcm2–7 before and after loading was analyzed by negative-stain EM. 2D class averages show Mcm2–7 single-hexamers before loading but double-hexamers after loading. Source data are provided as a Source data file.