gmx-saltbr man page
gmx-saltbr — Compute salt bridges
gmx saltbr plots the distance between all combination of charged groups as a function of time. The groups are combined in different ways. A minimum distance can be given (i.e. a cut-off), such that groups that are never closer than that distance will not be plotted.
Output will be in a number of fixed filenames, min-min.xvg, plus-min.xvg and plus-plus.xvg, or files for every individual ion pair if the -sep option is selected. In this case, files are named as sb-(Resname)(Resnr)-(Atomnr). There may be many such files.
Options to specify input files:
- -f [<.xtc/.trr/...>] (traj.xtc)
Trajectory: xtc trr cpt gro g96 pdb tng
- -s [<.tpr>] (topol.tpr)
Portable xdr run input file
- -b <time> (0)
First frame (ps) to read from trajectory
- -e <time> (0)
Last frame (ps) to read from trajectory
- -dt <time> (0)
Only use frame when t MOD dt = first time (ps)
- -t <real> (1000)
Groups that are never closer than this distance are not plotted
- -[no]sep (no)
Use separate files for each interaction (may be MANY)
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2017, GROMACS development team