Hi, I was thinking is it possible I generate a linear structure with AMBER and then use it in Abinitio module for de novo folding or I can generate a linear structure in Rosetta and use it.? Because from what I see, Abinitio only needs the fasta format and an input structure. So if my input structure is from PDB, then it doesn't make any sense to do de novo folding. In addition, how can I generate a fasta file with a certain protein seq i have in mind.? Thanks.