[modeller_usage] Protein-complex

Dear Modeller users,

I have a template complex (A1:B1); I would like to create a model of A2:B1 complex,  A1 and A2 are similar about 50%  and the structure of the A2 is known. I want to use the known structure (not the template structure of A1 subunit from complex) for modelling and refinement. I was wondering if it I could do it with modeller and how?

Thanks in advance,

Mehdi