I am planning to work on the outer membrane protein of a bacterium, which leads to gastroentritis. I found out the best way to target is through the outer membrane protein.
You can do a BLAST search from your FASTA sequence to find similar structures with available PDB. If the similarity gets above 50%, it's a good template for you to build an homology model.
Them, you use MOE or MODELLER to get your homology structure.