Using PDB-AddH to add hydrogen atoms on a given protein (CHARMM22 defined hydrogen atoms)

1. Upload your PDB files to add hydrogen atoms, the page will check whether the uploaded file meets the requirements

2. When the user clicks the 'Run PDB-AddH' button to submit, the page displays the results: the download link is attached in the left box, and the 3D line model before and after adding hydrogen atoms is displayed in the right box. All hydrogen atom trial ball stick models are also shown.