CrystalsFirst

SMARTSOAK® SCREENING

Crystal Structure First.

SMARTSOAK® SCREENING

Crystal Structure First.

Unlocking new chemical matter using SmartSoak®

The challenge in early drug discovery is not just finding molecules that bind but finding novel chemical matter that expands beyond crowded IP space and traditional scaffolds. Most high-throughput or biophysics-only screens identify hits indirectly and often miss unconventional binders.

SmartSoak® Screening changes this. By applying crystallography at the very start in the context of fragment-based drug discovery, fragment binding is observed directly in protein structures. This “crystal structure first” paradigm provides unambiguous 3D data for each hit, ensuring medicinal chemistry starts from validated binding modes rather than assumptions.

From kinase programs to protein–protein interaction targets, SmartSoak® has demonstrated the ability to uncover unexpected binding modalities, new scaffold classes, and even induce conformational changes that open hidden pockets.

Deep Expertise

Direct structural validation — Every fragment hit is structurally confirmed, removing uncertainty and reducing false positives.

Novel chemotypes — SmartSoak® hits consistently expand chemical space with scaffolds not represented among known binders.

Chemical space docking integration — Validated fragment structures can be directly used as seeds for large-scale docking of chemical space sampling billions of follow up molecules to accelerate from fragment to potent hits.

Revealing new sites and conformations — Screens not only identify active site binders but also uncover binding at allosteric and peripheral sites.

Relevance for advanced modalities — Structurally defined hits with multiple exit vectors are particularly valuable for the design of PROTACs and molecular glues, where ternary-complex geometry is key.

Direct structural validation — Every fragment hit is structurally confirmed, removing uncertainty and reducing false positives.

Novel chemotypes — SmartSoak® hits consistently expand chemical space with scaffolds not represented among known binders.

Chemical space docking integration — Validated fragment structures can be directly used as seeds for large-scale docking of chemical space sampling billions of follow up molecules to accelerate from fragment to potent hits.

Revealing new sites and conformations — Screens not only identify active site binders but also uncover binding at allosteric and peripheral sites.

Relevance for advanced modalities — Structurally defined hits with multiple exit vectors are particularly valuable for the design of PROTACs and molecular glues, where ternary-complex geometry is key.

Structure First Campaign

  1. Protein production and crystallization 
  2. SmartSoak application — A high-performance soaking systems is established for the protein crystals
  3. SmartSoak enabled soaking — Fragment panels are soaked into crystals.
  4. High-throughput data collection — Hundreds of crystals are measured at synchrotron beamlines, delivering rapid structural readouts.
  5. Hit identification — Bound fragments are detected directly in electron density, with their binding mode fully refined using our FastForward pipeline
  6. Fragment evolution — Validated fragment structures can be taken forward immediately into Chemical Space Docking and FragAI.

Deliverables

  • Fragment-bound crystal structures at high resolution, annotated with binding interactions.
  • Comprehensive dataset including coordinates, electron density, and QC.
  • Hit lists enriched in novelty and SAR growth vectors.
  • Integration-ready data for Chemical Space Docking campaigns and FragAI for follow-up hit-to-lead programs.
  • Strategic value for modern modalities such as PROTACs and molecular glues, supported by geometry-rich structural data.

FAQ: SmartSoak® Screening

Because SmartSoak® gives direct structural proof of binding. This avoids false positives from assay artifacts and ensures medicinal chemistry begins with confidence.

Fragment hits often represent novel chemotypes, and frequently explore underrepresented chemical space. They provide fresh IP opportunities and stronger differentiation.

Each fragment structure serves as a seed for virtual fragment evolution using Chemical Space Docking and FragAI, enabling efficient exploration of chemical spaces. This expands fragments into potent, drug-like hits in just one or two design cycles.

Yes. Beyond canonical active sites, SmartSoak® screening routinely reveals allosteric and hidden binding sites and can capture ligand-induced conformational changes that open new druggable pockets.

Because these modalities depend on precise structural geometry of ternary complexes. SmartSoak® hits provide exit vectors and conformational detail that guide rational design of bifunctional molecules.

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