[phenixbb] how to move one domain of a protein in respect to another?

Dear all, I am working with a protein which form homooligomeric assembly. Each subunit of the assembly consists of 2 subdomains. I would like to create chimeras with the subdomains moved with respect to each other, keeping the linkers. I am wondering what would be the easiest way to do this? Any suggestions are welcome! Sincerely, Tanya