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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

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Query the microscopic and macroscopic pKa values of a small molecule
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Enumerate and score protonation states to obtain the lowest energy states at a specified pH
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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
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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 Quick Reference Sheet

Protein Preparation Workflow

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Publications

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

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

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Towards the comprehensive, rapid, and accurate prediction of the favorable tautomeric states of drug-like molecules in aqueous solution

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Epik: a software program for pKa prediction and protonation state generation for drug-like 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.