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Related Concept Videos

Intrinsically Disordered Proteins02:18

Intrinsically Disordered Proteins

Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
Protein-protein Interfaces02:04

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 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,...
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.
Intrinsically Disordered Proteins02:18

Intrinsically Disordered Proteins

Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
Protein-Protein Interfaces02:04

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...

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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

Modeling disordered protein interactions from biophysical principles.

Lenna X Peterson1, Amitava Roy1,2,3, Charles Christoffer4

  • 1Department of Biological Sciences, Purdue University, West Lafayette, Indiana, United States of America.

Plos Computational Biology
|April 11, 2017
PubMed
Summary
This summary is machine-generated.

A new computational method, IDP-LZerD, models protein-protein interactions (PPIs) involving intrinsically disordered proteins (IDPs). This approach aids understanding of cellular signaling and regulatory pathways by predicting complex protein structures.

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06:48

Single-Molecule Measurement of Protein Interaction Dynamics Within Biomolecular Condensates

Published on: January 5, 2024

Area of Science:

  • Structural biology
  • Computational biology
  • Biophysics

Background:

  • Disordered protein-protein interactions (PPIs) are crucial in cellular signaling and regulation.
  • Intrinsically disordered proteins (IDPs) lack stable structures but gain order upon binding.
  • Experimental and existing computational methods struggle to model these disordered PPIs.

Purpose of the Study:

  • To develop a novel computational method for modeling the tertiary structure of disordered PPIs.
  • To understand the biophysical binding mechanisms of IDPs to structured proteins.

Main Methods:

  • Introduction of IDP-LZerD, a computational tool for modeling disordered PPIs.
  • Incorporation of the biophysical principle of IDP local segment initiation and subsequent region coalescence.
  • Testing on a dataset of 22 disordered PPIs.

Main Results:

  • IDP-LZerD successfully predicted the conformation of 21 bound and 18 unbound receptors for disordered PPIs.
  • The method validates biophysical principles governing IDP binding.
  • Demonstrated significant expansion of protein structure modeling capabilities.

Conclusions:

  • IDP-LZerD offers crucial insights into the molecular mechanisms of disordered PPIs.
  • The method enhances our ability to model complex protein interactions.
  • Supports the understanding of IDP behavior in cellular processes.