I have two pdb-files containing two different protein structures. I need to combine these structures in Pymol. with a linker-sequence combining them. The linker I will need to create myself in Pymol. I also need to make some signal-peptides in the ends of each of the proteins. The linker and the signal-peptides are not in a pdb-file, as these will just be some random small sequences (the goal is to just come up with a reasonable illustration, it doesn't have to be exact).
How do I get both PDB-files into the same project in Pymol and how do I arrange them? And then, how do I create these custom sequences? Thanks!