Check with PISA@EBI, it has database searches where you can fetch all dodecamers in the PDB
Eugene On 20 Feb 2013, at 06:29, Hui Wang wrote: Dear all, I am looking for proteins that form a dodecameric ring structure (Not two rings of hexamer Nor tetrahedral distribution of subunit trimers). I found some phage portal proteins after a quick search in PDB, but I need more. Does anyone know more protein dodecamers that has C12 symmetry? Thanks, Hui -- Scanned by iCritical.