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Protein Families02:47

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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...
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Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
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Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
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AlphaFold Protein Structure Database and 3D-Beacons: New Data and Capabilities.

Jennifer Fleming1, Paulyna Magana1, Sreenath Nair1

  • 1European Molecular Biology Laboratory European Bioinformatics Institute Hinxton UK.

Journal of Molecular Biology
|March 26, 2025
PubMed
Summary
This summary is machine-generated.

The AlphaFold Protein Structure Database now integrates AlphaMissense predictions for variant pathogenicity and Foldseek for structure comparisons. These enhancements improve accessibility and utility for life science research.

Keywords:
AlphaFoldAlphamissenseAnnotationsFoldseekTraining

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Area of Science:

  • Structural Biology
  • Bioinformatics
  • Genomics

Background:

  • The AlphaFold Protein Structure Database is a key resource for protein structure data.
  • Accessibility and utility for life science researchers are crucial for scientific advancement.

Purpose of the Study:

  • To enhance the utility and accessibility of the AlphaFold Protein Structure Database.
  • To integrate new features for analyzing protein variants and structures.

Main Methods:

  • Integration of AlphaMissense predictions for variant pathogenicity.
  • Incorporation of Foldseek for rapid protein structure searches.
  • Enhancement of the 3D-Beacons framework with new annotation endpoints.

Main Results:

  • Interactive heatmaps and 3D visualizations display variant pathogenicity at the residue level.
  • Users can toggle between structure quality (pLDDT) and pathogenicity scores.
  • Foldseek enables efficient protein structure comparisons.
  • Bulk data download options are now available.

Conclusions:

  • These advancements significantly improve the functionality and accessibility of protein structure resources.
  • The enhanced database facilitates discoveries through improved data analysis and integration.
  • The integration of pathogenicity and structural data aids in understanding variant implications.