In my I-TASSER results I get a listing of top 10 templates used by the program in modeling my protein. At the end of each of the lines for the templates there is a "download" button. When I click "download" I extract a file called "threadingX.pdb." This pdb file is supposed to contain the 3D structure of the aligned region. It doesn't look like a "standard" pdb file. Is there a way to visualize this? How do I use the data that these files contain?