imphd

 NAME
imphd – Define improper torsions list for the residue

 SYNOPSIS
imphd
...
lab1 lab2 lab3 lab4    lab5 lab6 lab7 lab8 ...
...
end

 DESCRIPTION
The keyword includes only selected improper torsions. Following imphd a list of improper torsions ended by the keyword end must be provided. Each improper torsion is defined by a quadruplet of atom labels (see synopsis). Labels starting with a - or a + refer to atoms belonging to the preceding and following residue in the solute sequence.

 EXAMPLES

imphd
 -c   ca   n    hn   ca   +n   c    o
end

 WARNINGS
The keyword bonds must appear before imphd.