POP
POP is a little Program which derives probabilities of cis
or trans conformation of Xaa-Pro peptide bonds based on the
observed 13C chemical shifts.
POP was written by Dirk Labudde at the FMP in Berlin.
It is a Tcl/Tk script and requires a Tcl/Tk version higher than 8.0
Reference
M. Schubert, D. Labudde, H. Oschkinat, P. Schmieder. A software tool
for the prediction of Xaa-Pro peptide bond conformations in proteins based on
13C chemical shift statistics. J. Biomol. NMR 24, 149-154 (2002).