[modeller_usage] Loop refinement: setting the right anchors in multichain models

Hi everyone,

I am trying to do loop refinement on a multi-chain protein. My problem is that Modeller tries to anchor C-ter loops to the N-ter of the next chain, yielding unrealistic starting configurations, and making the whole refinement fail.

How can I instruct Modeller that the C-ter and the following N-ter "loops" are to be modeled separately?

Thanks, Jerome