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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...

Ligand Binding Sites

Ligand Binding Sites

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...

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...

Protein Families

Protein Families

Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism. Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members. If these new proteins contain similar amino acids in key...

Protein Organization

Protein Organization

Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....

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Related Experiment Video

Updated: Dec 26, 2025

Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web

Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web

Published on: July 16, 2017

GSP4PDB: a web tool to visualize, search and explore protein-ligand structural patterns.

Renzo Angles^1,2, Mauricio Arenas-Salinas^3,4, Roberto García^5,4

¹Department of Computer Science, Universidad de Talca, Camino Los Niches Km 1, Curicó, Chile. rangles@utalca.cl.

BMC Bioinformatics

|March 14, 2020

Summary

GSP4PDB is a new bioinformatics tool that helps researchers find protein-ligand interaction patterns. It uses graph-based structural patterns (GSP) to visualize and search the Protein Data Bank for new discoveries.

Keywords:

Big data PDB Protein-ligand interaction Structural patterns

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Last Updated: Dec 26, 2025

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Published on: December 25, 2021

Area of Science:

Biotechnology
Protein Engineering
Bioinformatics

Background:

Structural patterns are crucial for understanding protein-ligand interactions and protein function.
Discovering these patterns is a key goal in protein engineering and biotechnology.

Purpose of the Study:

To present GSP4PDB, a novel bioinformatics web tool for exploring protein-ligand structural patterns.
To enable users to visualize, search, and discover these patterns within the Protein Data Bank.

Main Methods:

Introduced graph-based structural patterns (GSP) as a model for protein-ligand interactions.
Developed GSP4PDB with a graphical interface for users to draw and search for GSPs in a PDB database.
Results are visualized using graph-based representations and offer filtering and download options.

Main Results:

The GSP model effectively represents protein-ligand interactions.
GSP4PDB provides an intuitive platform for searching and visualizing these patterns.
Users can analyze and export search results for further investigation.

Conclusions:

GSP4PDB is a user-friendly and efficient tool for discovering novel protein-ligand interaction patterns.
Facilitates research in protein engineering and biotechnology through accessible pattern analysis.