How to assemble two predicted protein models of virus into one polyprotein if there is no template or resolved structures in nearest family member protein.

Question

[nc.manimaran]

I have predicted two viral proteins using modeller and validated by Ramachandran plot. I have to generate poly protein as single pdb structure. How to assemble predicted protein model into one polyprotein . also there is no single resolved polyprotein or model from nearest family member of virus. Thanks in advance