[Chimera-users] needing help for separating structures

Dear Sir/Madam, I am using Chimara to display large proteins. It is very nice. 6DHO(PDB structure, see attachment) is a very recent PSII structure consisting both S2 and S3(richer) states, which are highly overlapped in the raw data. I am urgently wondering how can I separate S3 out from the S2/S3 mixture by Chimera, especially the OEY? cluster and all its ligands? Thank you very much! Best wishes