ci9b00687_si_001.pdf (1.52 MB)
GroScore: Accurate Scoring of Protein–Protein Binding Poses Using Explicit-Solvent Free-Energy Calculations
journal contribution
posted on 2019-12-11, 22:29 authored by Jan Walther Perthold, Chris OostenbrinkProtein–protein docking algorithms promise a potential
relief
for the mismatch between the number of experimentally determined complex
structures and the number of relevant protein interactions in an organism.
To distinguish correctly from wrongly generated poses, it is necessary
to score complexes according to their structural similarity to the
real complex, which is usually done by computing interaction energies
of some sort. Here, we explore the potential of free-energy calculations
with statistical-mechanical foundation in the context of molecular
dynamics (MD) simulations with explicit solvent to score a large number
of complex poses. We introduce an adaptive sampling scheme which ensures
that most sampling time is spent on the most promising poses. Our
approach is illustrated by scoring of all targets in the CAPRI Score_set,
a scoring benchmark set, and three additional CAPRI targets, together
consisting of more than 22 000 poses. Our scoring scheme shows
a performance that is competitive with the most successful approaches
that were previously reported. All necessary scripts to run the automated
scoring pipeline are available in the Supporting Information for this
paper.