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Related Concept Videos

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.
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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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Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used representations is the dash-wedge formula. The dashed wedges, solid wedges, and the plane lines indicate the groups situated behind the plane, coming out of the plane, and in the plane, respectively.
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Updated: Sep 11, 2025

Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web
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FlatProt: 2D visualization eases protein structure comparison.

Tobias Olenyi1, Constantin Carl2, Tobias Senoner2

  • 1Department of Informatics, Bioinformatics & Computational Biology, School of Computation, Information, and Technology (CIT), TUM (Technical University of Munich), 85748, Garching/Munich, Germany. tobias.olenyi@tum.de.

BMC Bioinformatics
|August 13, 2025
PubMed
Summary
This summary is machine-generated.

FlatProt offers standardized 2D visualizations for comparing protein structures, aiding bioinformatics and drug discovery. This tool enables rapid inspection of large protein sets, improving pre-filtering and analysis of conserved features.

Keywords:
Bioinformatics toolsProtein structureProtein visualizationSequence comparison

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Structural Biology

Background:

  • Comparing 3D protein structures is crucial for bioinformatics, molecular biology, and drug discovery.
  • Current 2D visualization tools struggle with simultaneous comparison of multiple protein structures and large datasets.
  • Existing methods lack standardization for efficient pre-filtering and inspection of extensive protein collections.

Purpose of the Study:

  • To introduce FlatProt, a novel tool for standardized 2D visualization of protein structures.
  • To enable efficient comparison of individual protein structures and large sets thereof.
  • To complement existing 3D viewers by providing scalable visual summaries.

Main Methods:

  • FlatProt utilizes Foldseek-based family rotation alignment or an inertia-based fallback for consistent structure representation.
  • The tool supports domain-aware decomposition and family-level overlays for detailed analysis.
  • It offers lightweight visual abstraction of secondary structures for clarity.

Main Results:

  • FlatProt generates consistent and scalable 2D visual representations of protein structures.
  • The tool demonstrates efficient processing of large protein datasets, as shown on a human proteome subset.
  • It successfully visualizes individual and multiple protein structures for comparative analysis.

Conclusions:

  • FlatProt provides clear, consistent, and user-friendly visualizations for rapid, large-scale comparative inspection of protein structures.
  • The tool bridges the gap between interactive 3D visualization and static summaries.
  • FlatProt facilitates exploration of conserved features, outlier detection, and prioritization of structures for further analysis.