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Related Concept Videos

Protein Networks02:26

Protein Networks

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An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
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Conserved Binding Sites01:49

Conserved Binding Sites

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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...
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Protein Organization01:24

Protein Organization

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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.
The primary structure of a protein is its amino acid sequence....
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Protein-protein Interfaces02:04

Protein-protein Interfaces

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Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
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Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

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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.
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Protein Families02:47

Protein Families

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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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Updated: Sep 10, 2025

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
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Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues

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Large protein databases reveal structural complementarity and functional locality.

Paweł Szczerbiak1,2, Lukasz M Szydlowski1,2, Witold Wydmański2,3

  • 1Sano Centre for Computational Medicine, Kraków, Poland.

Nature Communications
|August 25, 2025
PubMed
Summary
This summary is machine-generated.

Researchers mapped protein structures from AlphaFold Protein Structure Database and Microbiome Immunity Project. They found distinct yet functionally overlapping protein spaces, revealing a shared biological function landscape.

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Related Experiment Videos

Last Updated: Sep 10, 2025

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
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Area of Science:

  • Computational biology
  • Structural bioinformatics
  • Protein science

Background:

  • Recent advances in protein structure prediction yield numerous 3D models.
  • Efficient computational methods are crucial for analyzing large protein structure datasets.
  • Databases like AlphaFold Protein Structure Database (AFDB) and Microbiome Immunity Project (MIP) offer valuable structural information.

Purpose of the Study:

  • To develop a unified low-dimensional representation of protein structure space.
  • To analyze and visualize the functional profiles of protein clusters from diverse databases.
  • To provide an accessible tool for exploring protein sequence-structure-function relationships.

Main Methods:

  • Utilized structural clusters from AFDB and MIP.
  • Developed a cohesive low-dimensional embedding for protein structures.
  • Mapped functional annotations onto the protein structure space.
  • Created an open-access web server for data exploration.

Main Results:

  • AFDB and MIP protein structures occupy distinct regions but show significant overlap in functional profiles.
  • High-level biological functions are localized in specific regions of the protein space.
  • The study reveals a shared functional landscape across diverse protein data sources.
  • Demonstrated the generalizability of the approach for further biological discovery.

Conclusions:

  • The developed protein structure representation facilitates understanding of sequence-structure-function relationships.
  • The findings highlight a common functional organization within diverse protein datasets.
  • The open-access web server enables new biological questions regarding taxonomy, environment, and function.