Protein-ligand Binding Affinity Prediction Based on Grid Representation and Deep Learning: Paving the Way to Efficient Structure-based Drug Design

This website presents our research on molecular representations, virtual screening and protein–ligand binding affinity. The articles explain UniMolRep, DL-FSG and AGIMA-Score alongside figures and findings from our papers.

You can explore how molecular structures become inputs for learning models and how those models make predictions. Interactive analyses let you compare representations, try a screening model and examine the spatial response of an affinity model.

UniMolRep · 2026

What does a molecular representation preserve?

A fingerprint, a graph and a spatial grid expose different information to a model. UniMolRep makes these choices explicit and brings their preparation into one toolkit.

Its benchmarks examine where complementary representations improve molecular-property and affinity prediction.

Explore representations →
Figure 1, Guo et al. (2026).

Molecular representations

UniMolRep taxonomy linking a molecule to fingerprints, molecular graphs, bond angles and torsions.

UniMolRep connects chemical patterns, molecular connectivity and three-dimensional geometry in a common representation framework. Guo et al. (2026).

AGIMA-Score · 2025

Learning the contacts across a binding interface

Which atomic connections matter when estimating binding strength? AGIMA-Score builds graphs around contacts between protein and ligand atoms, then evaluates this choice on independent scoring tests.

Explore affinity prediction →
Figure 2D, excerpt, Wang and Huang (2025) · CC BY 4.0.

Intermolecular adjacency

Published panel D: distance-dependent edges connect purple protein atoms to ochre ligand atoms, without intramolecular edges.

AGIMA-Score focuses graph learning on contacts across the protein–ligand interface. Excerpt of panel D; group colours identify the binding partners. Wang and Huang (2025).

About the project

The project investigates how molecular structure can be represented and learned to estimate protein–ligand binding affinity. It aims to develop grid representations and deep-learning methods for affinity prediction and rescoring in structure-based drug design.