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Conserved Binding Sites

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...

Conserved Binding Sites

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...

Protein-protein Interfaces

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...

Protein-Drug Binding: Determination Methods

Protein-Drug Binding: Determination Methods

Determining protein-drug binding can be achieved through indirect and direct methods, each providing valuable insights into the interaction between proteins and drugs.
Indirect methods involve isolating the bound drug from its free form in biological samples such as blood, serum, or plasma. These techniques aim to measure the percentage of drugs bound to proteins. Equilibrium dialysis is a commonly used method where the free drug concentration at equilibrium is measured by separating the bound...

Ligand Binding Sites

Ligand Binding Sites

Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...

Protein Networks

Protein Networks

An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...

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Related Experiment Video

Updated: May 19, 2026

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Published on: January 26, 2024

Data mining of protein-binding profiling data identifies structural modifications that distinguish selective and

Austin B Yongye¹, José L Medina-Franco

¹Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie, Florida 34987, USA.

Journal of Chemical Information and Modeling

|August 4, 2012

Summary

This study presents a method to analyze large compound screening data, identifying structural changes that affect protein binding. The approach helps distinguish specific compounds from promiscuous ones in drug discovery.

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Protein Target Prediction and Validation of Small Molecule Compound

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Last Updated: May 19, 2026

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Published on: January 26, 2024

Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions

Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions

Published on: December 1, 2020

Protein Target Prediction and Validation of Small Molecule Compound

Protein Target Prediction and Validation of Small Molecule Compound

Published on: February 23, 2024

Area of Science:

Computational chemistry
Cheminformatics
Drug discovery

Background:

Activity profiling of compound libraries across diverse targets is crucial for identifying drug leads and chemical probes.
Analyzing structure-activity relationships (SAR) in large datasets is essential for understanding compound behavior.
Existing methods may not systematically identify structural drivers of target promiscuity.

Purpose of the Study:

To develop and demonstrate a systematic approach for analyzing large-scale compound screening data.
To identify specific structural modifications that influence a compound's binding promiscuity across multiple protein targets.
To differentiate between highly specific and promiscuous compounds based on their chemical structures.

Main Methods:

Utilized a public dataset of over 15,000 compounds screened against 100 sequence-unrelated proteins.
Applied a systematic analysis of structure-activity relationships focusing on structural changes impacting protein binding.
Compared activity profiles of compounds from different origins (natural products, academic synthetic, commercial).

Main Results:

Successfully identified key structural features associated with differential protein binding.
Compounds of similar synthetic origin from academic groups exhibited greater differences in promiscuity compared to natural products and commercial compounds.
The implemented method effectively distinguished between specific and promiscuous compounds.

Conclusions:

The developed approach provides a robust framework for analyzing large-scale activity profiling data.
Understanding SAR related to promiscuity is vital for optimizing compound specificity in drug discovery.
This methodology is broadly applicable to various large-scale protein-binding datasets.