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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...

Genome Size and the Evolution of New Genes

Genome Size and the Evolution of New Genes

While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.

Genome Size and the Evolution of New Genes

Genome Size and the Evolution of New Genes

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Evolution of New Traits in Microbes

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Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...

Exon Recombination

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Gene Duplication and Divergence

Gene Duplication and Divergence

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Updated: Jul 12, 2026

A New Screening Method for the Directed Evolution of Thermostable Bacteriolytic Enzymes

A New Screening Method for the Directed Evolution of Thermostable Bacteriolytic Enzymes

Published on: November 7, 2012

Directed evolution of novel protein functions.

¹Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA. zhao5@uiuc.edu

Biotechnology and Bioengineering

|August 28, 2007

Summary

Directed evolution engineers proteins, but creating novel functions is challenging. Combining directed evolution with rational design offers a promising molecular evolution model for new protein functions.

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Area of Science:

Protein engineering
Molecular biology
Biotechnology

Background:

Directed evolution is a powerful tool for protein engineering in research.
Engineering novel protein functions presents significant challenges, often requiring multiple mutations.

Discussion:

This review covers advancements in engineering novel protein functions.
Approaches include directed evolution alone or combined with rational/computational design.
A molecular evolution model for generating novel proteins is discussed.

Key Insights:

Novel protein functions often require simultaneous or synergistic mutations.
Combined approaches enhance the ability to engineer complex protein functions.
Engineered proteins expand applications and deepen understanding of protein evolution.

Outlook:

Future research will focus on refining molecular evolution models.
Developing new protein functions will drive innovation in biotechnology.
Insights from engineered proteins will illuminate protein structure-function relationships.