Hi gromacs Users:

I have a doubt respect to how g_hbond consider the cutoff angle (-a) 
Acceptor-Donnor-Hydrogen in gromacs 4.5.4. I need to evaluate the hydrogen 
bonds with an anble larger than 135°. The default value of the angle is cutoff 
in g_hbond is 30°, so this value means that the H. bonds larger than 30° will 
be evaluated? or the angles to evaluate will be larger than 150° (180° - 30°) 
as is proposed in this post for gromacs 3.1.1: 
http://lists.gromacs.org/pipermail/gmx-users/2003-January/003970.html
If the second case was correct, then the value to use in my case  should be "-a 
45" for looking all H. bonds larger than 135°?

Thank you, bye.
                                          
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