Methods and systems for estimating binding affinity
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United States of America Patent
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May 25, 2004
Grant Date -
Mar 28, 2002
app pub date -
May 8, 2001
filing date -
May 8, 2000
priority date (Note) -
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Abstract
Methods and systems of predicting binding affinity between a ligand and a receptor. In one embodiment, the predicted binding affinity (pKj) is determined by at least using a formula pKj=C0+C1*vdW+C2*Att_pol+C3*(Att_pol*Att_pol+Rep_pol*Rep_pol). vdW represents the van der Waals interaction energy between the ligand and the receptor. Att_pol represents the surface area of the ligand forming complimentary polar interactions with the receptor. Rep_pol represents the surface area of the ligand forming uncomplimentary polar interactions with the receptor. An improved process of calculating linear interpolation of grid-based vdW energy. A first non-linear function is transformed into a less non-linear second non-linear function to reduce the error in linear interpolation. A trilinear interpolation process is applied to the second non-linear function. The value obtained is reverse transformed to produce an estimated vdW energy.
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