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Related Concept Videos

Conservation of Protein Domains Over Different Proteins02:26

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...
Protein Denaturation01:28

Protein Denaturation

The function of proteins depends on their native three-dimensional structure, which is dictated by the amino acid sequence of the specific protein. Folding of the polypeptide chain takes place under specific conditions that energetically favor the folded conformation. In contrast, protein denaturation occurs spontaneously under unfavorable conditions that disrupt the integrity of the folded conformation. Thus, the chemical and physical environment of a protein, such as significant changes in pH...
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Protein Folding

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Bacterial Protein Maturation01:26

Bacterial Protein Maturation

Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
Conservation of Protein Domains02:26

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...

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Related Experiment Video

Updated: May 17, 2026

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism
12:38

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

Published on: December 18, 2013

Assessing predictors of changes in protein stability upon mutation using self-consistency.

Grant Thiltgen1, Richard A Goldstein

  • 1Department of Mathematical Biology, National Institute for Medical Research, Mill Hill, London, United Kingdom.

Plos One
|November 13, 2012
PubMed
Summary

Predicting mutation effects on protein stability is crucial. This study found current computational methods have limited accuracy, though one showed better consistency for forward and back mutations.

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Area of Science:

  • Biophysics
  • Protein Engineering
  • Computational Biology

Background:

  • Accurate prediction of mutation effects on protein stability is vital for diverse applications.
  • Existing prediction tools face challenges due to experimental data limitations and inconsistencies.

Purpose of the Study:

  • To evaluate the accuracy of four computational methods for predicting protein stability changes due to mutations.
  • To assess method consistency using forward and back mutations and analyze variations based on mutation type and location.

Main Methods:

  • Comparative analysis of four distinct computational prediction methods.
  • Evaluation based on the consistency of predictions for reciprocal (forward and back) mutations.
  • Investigation of how mutation characteristics (nature and location) influence prediction accuracy.

Main Results:

  • One method demonstrated superior performance in generating consistent results for forward and back mutations compared to others.
  • Overall accuracy of the evaluated methods for predicting protein stability changes remains limited.
  • Prediction consistency varied significantly depending on the specific mutation's nature and its position within the protein.

Conclusions:

  • Current computational tools for predicting mutation-induced protein stability changes have inherent limitations.
  • Further development is needed to improve the accuracy and reliability of these predictive methods.
  • Understanding mutation impact on protein stability requires careful consideration of method-specific performance and mutation context.