Secondary structure contacts.


This server calculates contacts between secondary structure elements in your PDB file. Per secondary structure pair all atomic contacts are listed. Contacts with symmetry related molecules in the crystal are not listed.


A contact is defined as two atoms for which the distance between the Van der Waals surfaces is less than 0.5 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.
Please keep in mind that two secondary structure elements that are adjacent in the sequence always contact each other in this server output.
Either Choose a pdb-file,
Or Choose your own file

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.

Last modified Mon Jan 29 12:33:00 2018