[phenixbb] Hinge movement for refine?

Hiya, I have used rigid body refinement in phenix.refine as suggested: refinement.refine.sites { rigid_body = chain A rigid_body = chain B } If I have a multidomain protein like kinases, or G proteins which have flexible switches, how can I define the region within a given chain? Best, Partha -- MRC National Institute for Medical Research Division of Molecular Structure The Ridgeway, NW7 1AA, UK Email: [email protected] Phone: + 44 208 816 2515