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Related Concept Videos

Ligand Binding Sites02:40

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...
Ligand Binding Sites02:40

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...
Conserved Binding Sites01:49

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...
The Equilibrium Binding Constant and Binding Strength02:18

The Equilibrium Binding Constant and Binding Strength

The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
Ligand Binding and Linkage00:49

Ligand Binding and Linkage

Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked.  In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...
Ligand Binding and Linkage00:49

Ligand Binding and Linkage

Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked.  In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...

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Related Experiment Video

Updated: May 17, 2026

Application of I TASSER, trRosetta, UCSF Chimera, HADDOCK server, and HEX loria for De Novo and In Silico Design of Proteins
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Application of I TASSER, trRosetta, UCSF Chimera, HADDOCK server, and HEX loria for De Novo and In Silico Design of Proteins

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Solvent structure improves docking prediction in lectin-carbohydrate complexes.

Diego F Gauto1, Ariel A Petruk, Carlos P Modenutti

  • 1Departamento de Química Inorgánica, Analítica y Química Física, CONICET, Ciudad Universitaria, Buenos Aires, Argentina.

Glycobiology
|October 24, 2012
PubMed
Summary

This study introduces a new computational method to accurately predict protein-carbohydrate complex structures. By analyzing water molecules near proteins, the improved docking approach enhances predictions for drug design and understanding biological interactions.

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Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis
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Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis

Published on: June 20, 2025

Area of Science:

  • Biochemistry and Structural Biology
  • Computational Chemistry
  • Drug Discovery

Background:

  • Protein-carbohydrate interactions are crucial in biological processes.
  • Determining the 3D structure of these complexes is challenging due to low binding affinity.
  • In silico docking methods predict protein-ligand complexes but require refinement for accuracy.

Purpose of the Study:

  • To improve the accuracy of in silico docking for protein-carbohydrate complexes.
  • To develop a novel docking protocol biased by solvent structure.
  • To aid in the design and optimization of glycomimetic drugs.

Main Methods:

  • Modified the scoring function of AutoDock4 using molecular dynamics simulations.
  • Analyzed solvent structure adjacent to protein surfaces to identify "water sites".
  • Applied the modified method to predict complexes for proteins with mono- to tetrasaccharide ligands.

Main Results:

  • The new method significantly improved the accuracy of docking predictions.
  • Identified "water sites" that mimic carbohydrate interactions with proteins.
  • Demonstrated the relevance of solvent structure in protein-carbohydrate recognition.

Conclusions:

  • The solvent-structure-biased docking protocol is a powerful tool for predicting protein-carbohydrate complexes.
  • This approach offers new insights into the mechanisms of protein-carbohydrate interactions.
  • The findings support the development of glycomimetic drugs and advanced computational modeling.