<li>
PDB files can be downloaded from the PDB database based on given PDB code.
To select only a single chain use PDB_code:chain_id notation (for example
-5G3Q:B), chain_id is case sensitive.
+5G3Q:B), chain_id is case sensitive. For the PDB files containing multiple
+models, only the first models is taken.
<li>
Unres server requires input PDB files with continuous (without breaks)
protein chains. PDB files with gaps in the structure have to be first prepared
Secondary structure restraints can be added to MD and MREMD
simulation in advanced mode. Sequence of letters H,E and C or - for each
residue is used to input helical, extended and no restraints, respectively.
+<li>
+For MD simulations by default the snapshots are written in PDB format to be
+displayed by NGLViewer. In advanced mode, the user can request the compressed
+cx format, which is recommended for larger jobs. In this case, the movie
+in mp4 and ogv formats are rendered and displayed. The movie files can also
+be downloaded for further use.
</ol>
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