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OEDocking is a suite of well-validated molecular docking tools and workflows, each specifically designed to address its own unique aspect of protein-ligand interaction. Specifically, it features POSIT for informed pose prediction as well as FRED and HYBRID as complementary tools for virtual screening.

Most of the functionality available in OEDocking is also available in toolkit form via the OEDocking TK.

We identified the ureido methylpiperidine carboxylate derivative [using OEDocking], compound 7, as a reversible, selective, and potent inhibitor of cathepsin V. – Mitrovic et al. (CSBJ, 2022)
2IKO receptor.


  • FRED - super fast exhaustive docking (virtual screening)
  • HYBRID - very fast ligand guided docking (virtual screening)
  • POSIT - fast knowledge guided pose prediction (optimization)
  • Induced Fit Posing - dock and predict binding pose for flexible target sites.
  • Can utilize multiple crystallographic protein structures
  • Can use the crystallographic structure of a ligand to guide docking
  • 5-100 times faster than competing software
Prospective results on HSP-90 protein. OEDocking successfully identified a biologically active compound from commercially available database search.

Docking and Virtual Screening

FRED - Fast Exhaustive Docking

Within a given, but practical, resolution FRED performs a systematic and non-stochastic examination of all possible protein-ligand poses, filters for shape complementarity and chemical feature alignment before selecting and optimizing poses using the Chemgauss4 scoring function [1,2,3,4]. It comes with a powerful GUI for preparing the active site and adding custom restraints. It also provides a detailed scoring analysis that uses our Grapheme toolkit. In one example, Brus et al used FRED to discover a validated 2.7nM inhibitor of BChE, an Alzheimer's target [5]. The authors describe FRED as "by far the fastest docking tool and thus particularly suitable for ultrahigh-throughput docking".

Especially useful when you possess information solely from the apo-protein structure.

HYBRID - Ligand guided docking

HYBRID uses bound ligand information to improve virtual screening performance, e.g. as POSIT improves poses HYBRID improves enrichment. Like FRED, HYBRID performs a systematic, exhaustive, non-stochastic examination of poses within the protein active site; however, HYBRID reduces this search space based on shape and chemical complementarity to the bound ligand. This ligand-guided docking provides equivalent or better enrichment when compared to most docking procedures [1,2].

Highly valuable when you have information from the holo-protein structure.

For more detailed information on OEDocking, check out the link below:


Ligand Posing and Analysis

POSIT - Knowledge guided pose prediction

POSIT leverages bound ligand information for enhanced pose prediction. Using a combination of OpenEye's techniques, including structure generation, shape alignment, and flexible fitting, POSIT assesses a target ligand's similarity to bound ligands, guiding the algorithm and offering an accuracy estimate. Both 2D and 3D similarity measures are used in this reliability index, which is an industry first.

Furthermore, when given a set of ligand-receptor complexes from a crystallographic series, POSIT can autonomously identify the most suitable structure for guiding new ligand docking. The performance of this 'best guess' structure closely rivals that of using each structure individually and selecting the best result in hindsight. For single-pose generation, POSIT efficiently utilizes one structure, reducing computational load while maintaining high performance. For multiple pose generation, it offers the flexibility to use either the 'best guess' structure or all available structures for superior pose quality.

POSIT utilizes the shape constraint of the bound-ligand to drive a flexible fit while simultaneously limiting strain
OpenEye's Induced Fit Posing yields intuitive results that assist scientists in selecting high-quality candidates. An illustrative example is provided for its results against the CDK2 protein target.
Schematic depiction of OpenEye's Induced Fit Posing.

Induced Fit Posing

Predicting the binding of diverse ligands becomes notably challenging when adjustments are necessary in the receptor’s binding site. OpenEye’s Induced-fit posing (IFP) offers a specialized solution for accurate binding pose prediction in these scenarios. IFP predicts binding configuration of ligands that impact receptor’s binding site residue side chains. Use IFP to gain insights into the binding mechanisms of your compounds with flexible target sites and streamline selection of your lead compounds for optimization.


  1. "FRED Pose Prediction and Virtual Screening Accuracy", M. McGann, J. Chem. Inf. Model., 2011, 51, 578-596
  2. "FRED and HYBRID Docking Performance on Standardized Datasets", M. McGann J. Comp.-Aid. Mol. Design, 2012, 26, 897-906
  3. "Comparison of Topological, Shape, and Docking Methods in Virtual Screening", G.B. McGaughey, R.P. Sheridan, C.I. Bayly, J.C. Culberson, C. Kreatsolas, S. Lindsley, V. Maiorov, J.-F. Truchon and W.D. Cornell, J. Chem. Inf. Model., 2007, 47, 1504-1519
  4. "Gaussian docking functions", M. McGann, H.R. Almond, A. Nicholls, J.A. Grant and F.K. Brown, Biopolymers, 2003, 68, 76-90
  5. Discovery, Biological Evaluation, and Crystal Structure of a Novel Nanomolar Selective Butyrylcholinesterase Inhibitor, B. Brus, U. Kosak, S, Turk, A. Pislar, N. Coquelle, J. Kos, J. Stojan, J Colletier, S. Gobec, J. Med. Chem, 2014, 57, 8167-8179

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