Extended Data Fig. 6. Building the C21 portion of the structure.
a. Superposing a pair of neighbouring RBM3 domains on to a pair of neighbouring RBM2inner by aligning the first domain shows the rearrangements driven by the C33 versus C21 packing. b. The RBM2outer domains provide the major contact between the RBM2inner and RBM3 rings adapting between the C21 and C33 symmetries.