Bug #1235
peptide dihedral angle definitions violate IUPAC
Affected version - extra info:
probably all versions since prehistoric times
Affected version:
Difficulty:
uncategorized
Description
(and related code probably does who knows what other nasty stuff!)
Standard IUPAC definititions of phi/psi/omega angles (http://www.chem.qmul.ac.uk/iupac/misc/ppep3.html#320) are only vaguely followed by the code for g_chi. Perhaps other code like g_rama or g_angle has related problems.
These definitions should follow IUPAC and probably be implemented via selections in 5.0. At the very least, the lookups via atom names should be consolidated in one place. Numerous bugs have already been revealed by the CHARMM convention of naming hydrogen bonded to nitrogen as "NH", which was not anticipated by the original developers of various GROMACS tools, who hard-coded other strings in multiple places.
Related issues
History
#1 Updated by Rossen Apostolov almost 6 years ago
- Related to Bug #1481: g_chi output file chi.log reports atomic definitions for phi and psi that do not correspond to the angles output in the .xvg files added
#2 Updated by Erik Lindahl almost 6 years ago
- Target version changed from 5.0 to 5.x
#3 Updated by Erik Lindahl almost 5 years ago
- Target version changed from 5.x to future