Updated maps and coordinates replace those associated with Singh et al., 2024; the previously reported coordinates should now be considered obsolete. CryoEM maps have been deposited in the EMDB (https://www.ebi.ac.uk/emdb/) with accession codes EMD-48870, EMD-48871, and EMD-48916. Atomic coordinates have been deposited in the Protein Data Bank (PDB) (www.rcsb.org). The coordinates for the single subunit of the 34-mer CCW C-ring have been deposited into the PDB under accession code 9N49 (https://doi.org/10.2210/pdb9n49/pdb). The coordinates for the full 34-mer CCW C-ring have been deposited into the PDB under accession code 9N4Z (https://doi.org/10.2210/pdb9n4z/pdb).

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