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Pseudo-atomic model for the yeast tetrameric SC III2IV2. Side view (large structure) and view from the IMS (insert) showing the arrangement of CIII (PDB 3CX2) and two CIVs (PDB 1OCC) in the SC. One CL molecule (in the external cavity of CIII), cytochrome c1, cytochrome b and Qcr8 subunit (chain H, homolog of chain G in bovine) are colored in each CIII monomer as indicated. Derived from the structure reported in (Mileykovskaya et al., 2012).
