A fragment of CDK5RAP2 can associate with the NEDD1-bound γ-TuRC. (A) Two views of the consensus rec-γ-TuRC + CDK5RAP2 density map (surface representation). Unassigned, NEDD1 pinwheel and CMG module densities are indicated. Map resolution is 5.1 Å but is shown at a low threshold to include features with weaker density. (B) A schematic top view of the γ-TuRC’s subunit organization. (C) Side view of a refined molecular model of the rec-γ-TuRC + CDK5RAP2 (cartoon representation), with zoomed in views for the CMG module at position 13 and NEDD1 pinwheel in the density (transparent surface).