Extended Data Fig. 4: Cryo-EM density and associated model of representative parts of the closed and open CtMrs2 states.

a, The closed CtMrs2 pentamer, a separate monomer, and different segments. The cardiolipin density is colored in yellow. b, The open CtMrs2 pentamer, a separate monomer, and different segments. Interestingly, the open structure displays a clear lipid feature density in the groove between TM1 and TM2 of two adjacent monomers.