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Intrinsically Disordered Proteins

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...

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.
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Protein Folding

Protein Folding

Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...

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....

Conservation of Protein Domains Over Different Proteins

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.
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Molecular Chaperones and Protein Folding

Molecular Chaperones and Protein Folding

The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...

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Related Experiment Video

Updated: Sep 24, 2025

A Protocol for Computer-Based Protein Structure and Function Prediction

A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

Predicting Protein Conformational Disorder and Disordered Binding Sites.

Ketty C Tamburrini^1,2, Giulia Pesce¹, Juliet Nilsson¹

¹Aix Marseille Univ, CNRS, Architecture et Fonction des Macromolécules Biologiques, AFMB, UMR 7257, Marseille, France.

Methods in Molecular Biology (Clifton, N.J.)

|May 4, 2022

Summary

This summary is machine-generated.

Intrinsically disordered proteins lack stable 3D structures but perform vital functions. Identifying these disordered regions aids protein annotation and domain boundary delineation for crystallization.

Keywords:

Disorder databases and metaservers Induced folding Intrinsic disorder Intrinsically disordered binding sites Intrinsically disordered proteins Intrinsically disordered regions MoREs MoRFs Prediction methods and tools

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Area of Science:

Biochemistry
Structural Biology
Bioinformatics

Background:

Proteins can be fully or partially disordered, lacking a stable 3D structure.
Intrinsically disordered proteins (IDPs) are crucial for biological functions.
Sequence properties encode the conformational heterogeneity of IDPs.

Purpose of the Study:

To review methods for predicting protein disorder.
To identify intrinsically disordered binding sites.
To facilitate functional annotation and domain boundary delineation.

Main Methods:

Sequence-based prediction algorithms.
Analysis of amino acid sequence properties.
Identification of binding sites within disordered regions.

Main Results:

Disordered regions can be identified from sequence properties.
Prediction methods enable functional annotation.
Understanding disorder aids in identifying crystallization-amenable domains.

Conclusions:

Predicting protein disorder is essential for functional annotation.
Identifying disordered regions aids in structural biology studies.
Methods for disorder prediction are critical for protein research.