#pdbid|chain|is S/K-not|(slip)knot types;
5c50;B;S;+3.1
4wlr;A;K;-5.2 -3.1 -3.1
4wlq;A;K;-5.2 -3.1 -3.1
4wlp;A;K;-5.2 -3.1 -3.1
1by7;A;K;+3.1