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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.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...

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 analyses the...

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 analyses the...

Conservation of Protein Domains

Conservation of Protein Domains

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...

Mechanical Protein Functions

Mechanical Protein Functions

Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.

Protein Diffusion in the Membrane

Protein Diffusion in the Membrane

Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...

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Related Experiment Video

Updated: Jun 26, 2026

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

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

Published on: July 14, 2015

Domain mobility in proteins: functional and evolutionary implications.

Malay Kumar Basu¹, Eugenia Poliakov, Igor B Rogozin

¹J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA. malaykbasu@gmail.com

Briefings in Bioinformatics

|January 20, 2009

Summary

This summary is machine-generated.

Mobile protein domains, often involved in cellular signaling, drive protein diversity. Their evolutionary mobility and mechanisms remain key research areas, impacting our understanding of proteome evolution.

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Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Published on: January 26, 2024

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Last Updated: Jun 26, 2026

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

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

Published on: July 14, 2015

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Published on: January 26, 2024

Area of Science:

Molecular Biology
Evolutionary Biology
Bioinformatics

Background:

Eukaryotic proteins frequently contain multiple domains, with some exhibiting mobility or 'promiscuity'.
These promiscuous domains are vital for protein-protein interactions, particularly in signal transduction pathways.
They significantly contribute to the diversity of protein domain architectures within the proteome.

Purpose of the Study:

To review the current understanding of protein domain promiscuity.
To explore the evolutionary dynamics of promiscuous domains.
To discuss the role of domain mobility in cellular function and proteome diversity.

Main Methods:

Literature review and synthesis of existing research on protein domain evolution.
Analysis of domain architectures and their evolutionary patterns.
Discussion of proposed mechanisms for protein domain mobility.

Main Results:

Promiscuous domains are key drivers of protein architecture diversity and evolution.
Domain promiscuity is a dynamic evolutionary trait, with many domains gaining this status independently.
The evolutionary trajectory and precise mechanisms of domain mobility are not fully elucidated.

Conclusions:

Protein domain promiscuity is a fundamental factor in shaping proteome diversity and facilitating cellular signaling.
Further research is needed to uncover the biological mechanisms underlying protein domain mobility.
Understanding domain evolution is crucial for comprehending protein function and biological complexity.