Extended Data Fig. 7: The cryo-EM C5 map of the closed state of CtMrs2 with details of the Mg2+-binding.

Side-view of CtMrs2 closed cartoon representation with associated cryo-EM map density (left). Close-views of the Mg2+-binding sites of the permeation pore (sites U, S as well as P1 and P2) as well as of the NTD in the mitochondrial matrix (sites M1 and M2 and M3 and M4).