On 3/11/21 11:32 AM, Li Xue wrote:
> Does modeller accept ambiguous restraints? For example, I know there is
> helix in a region but I am not sure where it starts.

Yes, if you can dream up a function of your coordinates, Modeller can
restrain it. Built-in restraint forms can be seen at
https://salilab.org/modeller/10.0/manual/node109.html
or you can implement your own, as per
https://salilab.org/modeller/10.0/manual/node480.html

That being said, we don't have an existing restraint that does exactly
what you describe; you would have to add one.

        Ben Webb, Modeller Caretaker
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