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Mutations01:39

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Mutations01:35

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Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
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In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
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Mutations are heritable changes in an organism’s genome involving alterations in the base sequence of DNA or RNA. These changes can influence cellular processes and phenotypic traits, potentially transforming the unaltered wild type into a mutant form. Such changes, termed forward mutations, are pivotal in shaping the genetic diversity of organisms.RNA viruses exhibit the highest mutation rates due to the absence of robust proofreading mechanisms during genome replication. In contrast,...
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Related Experiment Video

Updated: Jan 27, 2026

Engineering Oncogenic Heterozygous Gain-of-Function Mutations in Human Hematopoietic Stem and Progenitor Cells
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Protein engineering: the potential of remote mutations.

Matthew Wilding1,2, Nansook Hong3, Matthew Spence3

  • 1Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, Australia matthew.wilding@anu.edu.au colin.jackson@anu.edu.au.

Biochemical Society Transactions
|March 24, 2019
PubMed
Summary

Protein engineering enhances enzyme stability and function by modifying remote regions, not just active sites. This approach is crucial for unlocking the full potential of engineered proteins in various industries.

Keywords:
directed evolutionevolutionary biologyprotein designprotein engineeringremote mutation

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Area of Science:

  • Biochemistry and Molecular Biology
  • Biotechnology
  • Protein Engineering

Background:

  • Engineered proteins, particularly enzymes, are widely utilized across industries for their catalytic, binding, and material properties.
  • The demand for proteins with improved stability, activity, and specificity drives innovation in protein engineering.
  • Rational protein design traditionally focuses on functionally critical sites like active or ligand-binding regions.

Purpose of the Study:

  • To review the current advancements in protein engineering.
  • To highlight the significance of engineering protein regions remote from active or ligand-binding sites.
  • To underscore the importance of remote region modification for future protein design.

Main Methods:

  • Literature review of recent studies in protein engineering.
  • Analysis of successful protein engineering strategies targeting remote regions.
  • Discussion of structure-dynamics-function relationships in protein design.

Main Results:

  • Growing evidence supports successful protein engineering at sites distant from active/ligand-binding regions.
  • Modifications in remote regions can significantly enhance protein properties.
  • Understanding structure-dynamics-function relationships is key to successful remote engineering.

Conclusions:

  • Engineering remote protein regions offers substantial potential for improving protein performance.
  • Future advancements in protein technologies will increasingly rely on exploiting remote regions.
  • Realizing the full potential of protein engineering necessitates a broader focus beyond traditional active sites.