Grids potential distribution across

SOM FA is a grid-based approach that does not use a probe to determine interaction energies. Instead, each grid point is assigned the shape or —> molecular electrostatic potential (MEP) value (a) shape is represented by binary values equal to 1 for points inside the van der Waals envelope and zero otherwise (b) electrostatic potential values at grid points are calculated from partial charges distributed across the atom centers [Robinson, Winn et al., 1999]. 

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