Related Experiment Video
Updated: Jun 4, 2026
05:13
Estimation of Structural Sensitivity of Intrinsically Disordered Regions in Response to Hyperosmotic Stress in Living Cells Using FRET
Published on: January 12, 2024
Bioinformatics analysis of disordered proteins in prokaryotes
Gordana M Pavlović-Lažetić1, Nenad S Mitić, Jovana J Kovačević
1Faculty of Mathematics, University of Belgrade, P.O.B. 550, Studentski trg 16, 11001 Belgrade, Serbia. gordana@matf.bg.ac.rs
BMC Bioinformatics
|March 4, 2011
Summary
This study reveals that protein disorder varies across prokaryotic functional groups and organism characteristics. Bacteria generally show higher disorder than archaea, with specific genomic and ecological factors correlating with protein disorder levels.
Area of Science:
- Proteomics
- Bioinformatics
- Evolutionary Biology
Background:
- Intrinsically disordered proteins (IDPs) lack fixed 3D structures and are linked to protein function.
- Previous research suggests a correlation between a protein's disorder content and its biological role.
Purpose of the Study:
- To comprehensively analyze and compare the disorder content of proteins from Archaea and Bacteria.
- To investigate the relationship between protein disorder and functional categories (Clusters of Orthologous Groups - COGs).
- To explore correlations between protein disorder and genomic, metabolic, and ecological organism characteristics.
Main Methods:
- Exhaustive analysis of protein disorder content across prokaryotic organisms.
- Utilized correlation and association rule mining to identify significant relationships.
- Compared disorder levels across functional categories (Cp, Isp, Me, Pc) and COGs.
Main Results:
- Bacteria exhibit higher protein disorder than Archaea, except in the Metabolism (Me) group.
- Information Storage and Processing (Isp) and Cellular Processes (Cp) functional groups show the highest disorder.
- Specific genomic (e.g., GC content, genome size) and ecological (e.g., aerobic/anaerobic) characteristics are associated with distinct protein disorder levels.
Conclusions:
- The study provides an extensive analysis of protein disorder in prokaryotes, extending previous findings.
- Novel correlations between protein disorder and organism characteristics offer insights into evolutionary processes.
- The findings can aid in understanding evolutionary mechanisms and potentially in taxon determination.
Related Concept Videos
02:18Intrinsically 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...
02:18Intrinsically 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...
02:26Protein 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,...
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,...
01:24Protein 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.
The primary structure of a protein is its amino acid sequence.
01:13Protein Organization
Overview
02:26Conservation 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...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...