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Epik

Rapid pKa and protonation state prediction tool

Prioritize the right protonation states for your drug discovery or materials science research

Epik is a tool for accurately and rapidly predicting the aqueous phase pKa values and protonation state distributions of complex, drug-like molecules. Leveraging the power of Schrödinger’s machine learning technology, the Epik model employs an ensemble of atomic graph convolutional neural networks, trained across a broad range of chemical space.

Key Capabilities

Query the microscopic and macroscopic pKa values of a small molecule
Enumerate and score protonation states to obtain the lowest energy states at a specified pH
Generate an easy-to-read report that includes the macroscopic pKa values of a small molecule, its different constituent protonation states and their populations, and a speciation diagram for the major species in solution
Make reliable predictions across an extremely broad range of chemistry supported by ML technology
FeaturedSchrödinger solutions for small molecule protonation state enumeration and pKa prediction

Schrödinger solutions for small molecule protonation state enumeration and pKa prediction

Schrödinger provides several solutions for predicting pKa values, protonation state distribution, and derived properties that can be applied across a range of drug discovery stages – from screening through lead optimization.

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Documentation & Tutorials

Get answers to common questions and learn best practices for using Schrödinger’s software.

Life Science Documentation

Epik

Accurately and rapidly predict the aqueous phase pKa values and protonation state distributions of complex, drug-like molecules.

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Publications

Browse the list of peer-reviewed publications using Schrödinger technology in related application areas.

Life Science Publication

Towards automated physics-based absolute drug residence time predictions

Life Science Publication

Accurate physics-based prediction of binding affinities of RNA- and DNA-targeting ligands

Life Science Publication

FEP augmentation as a means to solve data paucity problems for machine learning in chemical biology

Life Science Publication

Epik: pKa and Protonation State Prediction through Machine Learning

Life Science Publication

The transcriptional corepressor CtBP2 serves as a metabolite sensor orchestrating hepatic glucose and lipid homeostasis

Life Science Publication

Adverse Drug Reactions Triggered by’the Common HLA-B*57:01 Variant: A Molecular Docking Study

Life Science Publication

Discovery of Thienoquinolone Derivatives as Selective and ATP Non-Competitive CDK5/p25 Inhibitors by Structure-Based Virtual Screening

Life Science Publication

Boosting virtual screening enrichments with data fusion: Coalescing hits from two-dimensional fingerprints, shape, and docking

Life Science Publication

Testing physical models of passive membrane permeation

Life Science Publication

Predicting and improving the membrane permeability of peptidic small molecules

Training & Resources

Online certification courses

Level up your skill set with hands-on, online molecular modeling courses. These self-paced courses cover a range of scientific topics and include access to Schrödinger software and support.

Tutorials

Learn how to deploy the technology and best practices of Schrödinger software for your project success. Find training resources, tutorials, quick start guides, videos, and more.