Lili Peng wrote:
It's just the electrical charge on the surface of the molecule, at the
interface between the molecule and solvent.

So using a point-charges MD model, you define your interfacial atoms and sum them.

Mark

2009/9/1 Mark Abraham <[email protected]>

Lili Peng wrote:

Hi Gromacs users,

Is there a way to determine the surface charge of a molecule solvated in a
water box?  I'm aware that g_density can be used to determine the
electronic
charge density across a box system and g_potential can be used to
determine
the electrostatic potential across the box.  Is there a way to determine
just the surface charge of a molecule itself, neglecting the solvent?  Or
should I resort to software like APBS?

Define "surface charge" :-)

Mark
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