This server calculates contacts between all atoms in your PDB file,
including water. All contacts are listed only once. Contacts with
symmetry related molecules in the crystal are listed too.
Methods
A contact is defined as two atoms for which the distance between
the Van der Waals surfaces is less than 0.25 Ångstrom.
WHAT IF uses the following Van der Waals radii: C:1.8 Ångstrom;
O:1.4 Ångstrom; N:1.7 Ångstrom; S:2.0 Ångstrom.
If you have detected any error, or have any question or suggestion,
please send an Email to Gert Vriend.
Roland Krause, Maarten L Hekkelman, Jens E Nielsen,
Gert Vriend.
