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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...

Protein Families

Protein Families

Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism. Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members. If these new proteins contain similar amino acids in key...

Gene Evolution - Fast or Slow?

Gene Evolution - Fast or Slow?

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...

Evolutionary Relationships through Genome Comparisons

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...

Conservation of Protein Domains

Conservation of Protein Domains

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Related Experiment Video

Updated: Aug 10, 2025

An Integrated Approach for Microprotein Identification and Sequence Analysis

An Integrated Approach for Microprotein Identification and Sequence Analysis

Published on: July 12, 2022

FinO/ProQ-family proteins: an evolutionary perspective.

Zhen Liao^1,2, Alexandre Smirnov^1,2

¹UMR7156 - Génétique Moléculaire, Génomique, Microbiologie (GMGM), University of Strasbourg, CNRS, France.

Bioscience Reports

|February 14, 2023

Summary

This summary is machine-generated.

The FinO/ProQ protein family in bacteria evolves and spreads, impacting gene expression and DNA metabolism. These RNA chaperones act as key evolutionary players, influencing bacterial host evolution.

Keywords:

FinO ProQ RNA chaperone RNA-binding proteins evolution

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Area of Science:

Microbiology
Evolutionary Biology
Molecular Biology

Background:

RNA-binding proteins regulate gene expression post-transcriptionally but their evolutionary roles are understudied.
The FinO/ProQ family of bacterial RNA chaperones represents a key model for understanding protein evolution.

Approach:

This review examines the evolutionary dynamics of the FinO/ProQ family across bacterial populations.
It analyzes conserved and divergent themes, structural augmentations, and convergent evolution within the family.

Key Points:

The ancestral RNA-binding fold of FinO/ProQ proteins has diversified into specialized or globally acting regulatory hubs.
Convergent evolution shaped their RNA chaperone activity, linking them to DNA metabolism, translation, and virulence.
FinO/ProQ proteins exhibit both negative and positive roles in bacterial evolution.

Conclusions:

FinO/ProQ family regulators are active evolutionary drivers impacting bacterial host evolutionary trajectories.
Understanding their evolution provides insights into bacterial adaptation and gene regulation.