INSTRUCTIONS:
1. First, you have to clean your PDB file. Delete all the information not necessary and the HETATM, this can produce some problem for the calculation. You can use any text editor (eg. Notepad++) or some specific programs (eg. PDB tools to clean).
You can view here how to do this.
2. Select a PDB file to perform the Scanning.
3. Enter your email.
4. Click the "Submit" button. You'll be taken to the next page, where you can select the range of residues to perform the Scanning analysis.