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. 2022 May 6;65(10):7262–7277. doi: 10.1021/acs.jmedchem.2c00254

Table 2. Descriptors Involved in Three Models and Their Physical Meanings.

descriptor name physical meaning
PEOE_VSA_POS Total positive van der Waals surface area.
vsa_other van der Waals surface area (Å2) of atoms typed as “other”. Other: not H-bond acceptors, H-bond donors, acidic, basic, polar, or hydrophobic residues.
vsurf_DW12 Contact distances of vsurf_EWmin1 and vsurf_EWmin2; vsurf_EWmin describes the lowest hydrophilic energy representing the distances between the best three local minima of interaction energy when a water probe (OH2) interacts with the target molecule.
vsurf_ID3 Hydrophobic integy moment calculated at −0.6 kcal/mol energy level.
GCUT_PEOE_0 The GCUT descriptors are calculated from the eigenvalues of a modified graph distance adjacency matrix. Each (i,j) entry of the adjacency matrix takes the value 1/sqr(dij), where dij is the (modified) graph distance between atoms i and j. The diagonal takes the value of the PEOE partial charges. The resulting eigenvalues are sorted, and the smallest (GCUT_PEOE_0), 1/3-ile, 2/3-ile, and the largest eigenvalues are reported.
vsurf_DD23 Contact distances of vsurf_EDmin2 and vsurf_EDmin3; vsurf_EDmin describes the lowest hydrophobic energy representing the distances between the best three local minima of interaction energy when a hydrophobic probe (DRY) interacts with the target molecule.
a_base Number of basic atoms.
a_nN Number of nitrogen atoms.
vsurf_DD13 Contact distances of vsurf_EDmin1 and vsurf_EDmin3.