Explore Protein–Ligand Interactions with Confidence
Ligand.info is a comprehensive platform dedicated to protein–ligand interaction data, curated ligand collections, molecular binding information, and structural biology resources. Explore natural compounds, synthetic molecules, peptides, metabolites, and experimentally reported interaction datasets through an intuitive and powerful research environment.
650K+
Ligands95K+
Protein Targets3.2M+
Interactions150+
Research FieldsSearch the Database
Find ligands, proteins, molecular targets, binding affinities, biological activities, molecular formulas, and structural information.
A Comprehensive Resource for Protein–Ligand Research
Ligand.info brings together curated molecular information, experimentally reported protein–ligand interactions, and advanced search capabilities within a single platform. Researchers can investigate ligand properties, molecular recognition, binding affinity measurements, biological activities, and protein targets through an intuitive interface designed for computational biology, structural biology, medicinal chemistry, and bioinformatics.
Extensive Ligand Collection
Explore natural products, synthetic compounds, peptides, metabolites, bioactive molecules, and small molecules with detailed molecular annotations and chemical descriptors.
Protein–Ligand Interactions
Discover experimentally characterized interactions between proteins and ligands to better understand molecular recognition, target selectivity, enzyme binding, receptor interactions, and structural relationships.
Powerful Search Tools
Search by ligand name, molecular formula, molecular weight, biological activity, target protein, chemical structure, identifiers, or molecular properties using intelligent filtering tools.
Curated Molecular Information
The database continuously integrates high-quality molecular information to support biological research, computational analysis, and structural investigations across multiple scientific disciplines.
Everything You Need to Explore Protein–Ligand Relationships
Ligand.info combines molecular data, protein–ligand interaction records, binding affinity measurements, chemical structures, and biological annotations into one searchable platform. Whether you are investigating molecular recognition, studying enzyme interactions, exploring receptor binding, or analyzing compound properties, the platform provides fast access to high-quality scientific information.
Search Curated Ligands
Browse thousands of natural products, synthetic molecules, metabolites, peptides, and bioactive compounds using intelligent search filters.
Explore Molecular Interactions
Investigate experimentally reported interactions between proteins and ligands to understand biological functions and molecular recognition.
Analyze Binding Data
Compare affinity measurements including Ki, Kd and IC50 values together with biological activity and molecular descriptors.
Database Highlights
Indexed Molecular Data
- Chemical Structures
- Binding Affinity
- Protein Complexes
- Biological Activity
- Molecular Formula
- Descriptors
- SMILES
- InChI
- Target Families
- Structural Biology
Supporting Research Across Multiple Molecular Fields
Ligand.info provides valuable molecular resources for researchers working in computational biology, structural analysis, chemical biology, and life science research. The platform enables scientists to investigate molecular interactions, analyze ligand properties, and explore biological relationships through curated datasets.
Structural Biology
Study protein structures, ligand binding sites, molecular complexes, and interaction patterns to better understand three-dimensional molecular organization.
Computational Biology
Use molecular datasets for computational workflows including molecular modeling, simulations, prediction algorithms, and large-scale biological analysis.
Bioinformatics Research
Access organized molecular information supporting database mining, annotation, comparison studies, and integration with bioinformatics pipelines.
Molecular Docking Studies
Explore ligand and protein information useful for docking workflows, interaction prediction, molecular screening, and computational evaluation.
Chemical Biology
Investigate relationships between chemical molecules and biological systems by analyzing molecular properties and interaction profiles.
Medicinal Chemistry Research
Support compound characterization, molecular comparison, and structure-based investigations through reliable ligand information.
Find Molecular Information with Precision Search
Ligand.info provides advanced search capabilities designed for researchers exploring molecular interactions, ligand properties, protein targets, and structural information. Quickly identify relevant molecules using multiple search parameters and filtering options.
Chemical Structure Search
Search molecules using identifiers, structures, formulas, molecular weight, SMILES, and InChI information.
Protein Target Search
Explore ligand associations with proteins, enzymes, receptors, and molecular targets.
Interaction Data Filtering
Filter molecular relationships using affinity values, biological activities, and experimental information.
Search Ligand Database
Available Filters
Explore Molecular Relationships
Connect ligands, proteins, structures, and biological information through integrated molecular datasets.
Explore Diverse Molecular Information
Ligand.info integrates multiple categories of molecular data, providing researchers with a unified resource for exploring chemical properties, protein interactions, structural information, and biological annotations.
Ligand Collection
Access detailed information on natural products, synthetic compounds, metabolites, peptides, and small molecules with curated molecular descriptions.
- Molecular Names
- Chemical Classes
- Structural Information
- Molecular Properties
Protein Targets
Explore proteins associated with ligand interactions including enzymes, receptors, transport proteins, and other molecular targets.
- Protein Identifiers
- Target Families
- Functional Information
- Interaction Partners
Binding Affinity Data
Analyze quantitative interaction measurements that describe molecular binding strength and experimental observations.
- Kd Values
- Ki Values
- IC50 Measurements
- Activity Profiles
Chemical Properties
Investigate molecular characteristics supporting chemical analysis, comparison studies, and computational workflows.
- Molecular Weight
- Formula
- SMILES
- InChI
Interaction Networks
Understand relationships between molecules and proteins through organized interaction records and molecular connections.
- Protein Complexes
- Binding Sites
- Molecular Associations
- Interaction Mapping
Research Data Integration
Access structured molecular information suitable for bioinformatics analysis, computational research, and scientific data exploration.
- Database Mining
- Data Export
- Research Analysis
- Scientific Integration
Designed for Modern Molecular Research
Ligand.info combines organized molecular datasets, intuitive search capabilities, and research-focused tools to help scientists efficiently explore ligand information, protein interactions, and molecular relationships.
Curated Scientific Information
Access structured molecular records collected from scientific resources and organized for efficient exploration and analysis.
Research-Oriented Design
A platform developed around the needs of researchers working in bioinformatics, structural biology, computational chemistry, and molecular science.
Fast Data Exploration
Quickly search, filter, compare, and analyze molecular information through a user-friendly interface.
Integration-Friendly Data
Structured information designed to support computational workflows, data analysis, and scientific research projects.
Ligand.info Overview
Research PlatformLigand Records
Protein Targets
Unlock Molecular Insights Through Advanced Ligand Data
Discover protein–ligand relationships, analyze molecular properties, explore binding information, and access structured datasets designed to support researchers in bioinformatics, structural biology, computational studies, and molecular science.