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Related Concept Videos

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...
Protein Organization01:24

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.
Protein Networks02:26

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,...
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...
Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...

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Updated: May 22, 2026

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
07:08

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues

Published on: July 14, 2015

A position-specific distance-dependent statistical potential for protein structure and functional study.

Feng Zhao1, Jinbo Xu

  • 1Toyota Technological Institute at Chicago, Chicago, IL 60637, USA.

Structure (London, England : 1993)
|May 22, 2012
PubMed
Summary
This summary is machine-generated.

Designing accurate protein energy potentials is challenging. This study introduces a new statistical potential using sequence profiles and radius of gyration, significantly improving decoy discrimination tests.

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Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules

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Last Updated: May 22, 2026

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
07:08

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues

Published on: July 14, 2015

A Protocol for Computer-Based Protein Structure and Function Prediction
16:41

A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules
10:58

Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules

Published on: July 25, 2013

Area of Science:

  • Computational Biology
  • Biophysics
  • Structural Bioinformatics

Background:

  • Designing accurate protein energy potentials is crucial for understanding protein structure and function.
  • Existing knowledge-based statistical potentials often rely on simplified models for atomic interactions.
  • Current potentials primarily differentiate based on reference states, using basic atom-type correlations for interaction probabilities.

Purpose of the Study:

  • To develop a novel, highly accurate protein energy potential.
  • To improve upon existing statistical potentials by incorporating richer contextual information.
  • To enhance the performance of protein structure prediction and decoy discrimination.

Main Methods:

  • Parameterizing observed atomic interacting probability using protein sequence profile context and radius of gyration, beyond simple atom types.
  • Developing a position-specific statistical potential based on these enhanced parameters.
  • Evaluating the potential's performance in decoy discrimination tests against established methods.

Main Results:

  • The proposed position-specific statistical potential demonstrates superior performance in decoy discrimination tasks.
  • Incorporating sequence profile context and radius of gyration significantly enhances potential accuracy.
  • Evolutionary information, when integrated, substantially boosts the performance of protein energy potentials.

Conclusions:

  • The observed probability component of energy potentials is as critical as the reference state for accuracy.
  • Protein sequence profiles and radius of gyration are vital features for parameterizing atomic interactions.
  • Evolutionary information is a key factor in improving the predictive power of protein energy potentials.