[gmx-users] reg electrostatic potential

[vidhya sankar]

Dear justin 
Thank you for your previous reply.
               I would like to calculate absolute and cumulative  value of electrostatic potential at specific distance from surfaces of particular group of my protein but g_potential calculates only across box
also i  would like to calculate vibrational entropy which tool is useful
further i want to calculate mechanical stiffness of protein .is there is any tool in gromacs to find out stiffness 
I am expecting your reply
Thanks in advance
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