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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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Protein Organization01:24

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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 Organization01:13

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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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Updated: Jan 7, 2026

A Fast and Quantitative Method for Post-translational Modification and Variant Enabled Mapping of Peptides to Genomes
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Advancing Protein Quality Knowledge and Access with a Centralized and Interactive Database.

Shavawn M Forester1, Emily M Reyes1, Donald K Layman2

  • 1Nutrient Institute, a 501(c)(3) not-for-profit organization, Reno, NV, United States.

The Journal of Nutrition
|December 28, 2025
PubMed
Summary
This summary is machine-generated.

A new Protein Quality Hub consolidates global protein data, making it accessible. This resource aids dietary planning and research by providing transparent protein scoring and evaluation across diverse food sources.

Keywords:
FAIR data principleamino acidsbioavailabilitydietdigestibilityfood and nutrition datanutritionproteinprotein quality

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Area of Science:

  • Nutrition science
  • Bioinformatics
  • Food science

Background:

  • Protein quality is crucial for nutrition but data is fragmented across databases.
  • Accessibility of detailed food protein information is limited, even for experts.

Purpose of the Study:

  • To develop a novel, consolidated global protein quality database called the Protein Quality Hub.
  • To create a structured, searchable, and transparent platform for protein quality scoring and evaluation.
  • To demonstrate the utility of the Hub for dietary and research applications.

Main Methods:

  • Development of a centralized database integrating protein quality metrics.
  • Inclusion of protein correction factors, human and animal profiles, and Indicator Amino Acid Oxidation (IAAO) values.
  • Demonstration of Hub applications for querying PDCAAS and DIAAS values and complex research analyses.

Main Results:

  • The Protein Quality Hub currently contains 7,775 protein correction factors, 1,186 human patterns, 6,589 animal profiles, and 33 IAAO values.
  • The platform offers a unique comparison of protein digestibility versus metabolic availability data.
  • Four distinct applications of the Hub were demonstrated, showcasing its versatility.

Conclusions:

  • The Protein Quality Hub represents a significant advancement in making protein quality information readily accessible.
  • The Hub supports both simple dietary queries and complex scientific research.
  • Enhanced accessibility of protein quality data can benefit research and public health applications.