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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.
The primary structure of a protein is its amino acid sequence....
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Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web
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Proscan: a structure-based proline design web server.

Nathaniel Felbinger1,2, Helder V Ribeiro-Filho1,3, Brian G Pierce1,2

  • 1University of Maryland Institute for Bioscience and Biotechnology Research, Rockville, MD 20850, USA.

Nucleic Acids Research
|May 20, 2024
PubMed
Summary
This summary is machine-generated.

Proline substitutions can stabilize protein structures for applications like vaccine design. The Proscan web server helps researchers identify optimal proline modifications for protein engineering and stability.

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Area of Science:

  • Protein engineering
  • Structural biology
  • Computational biology

Background:

  • Structure-based protein design is crucial for applications such as engineering viral antigens for vaccines.
  • Proline residue substitution is an effective strategy to stabilize protein backbone conformations due to its unique cyclic side chain.

Purpose of the Study:

  • To develop a user-friendly web server, Proscan, for identifying and exploring proline substitutions in target proteins.
  • To provide researchers with tools to assess the favorability of proline designs for protein stabilization.

Main Methods:

  • Proscan assesses backbone angles, energetic favorability, and deep learning-based scores for proline substitutions at each position of an input protein structure.
  • The server includes interactive visualization of backbone angles and potential substitution sites.
  • Benchmarking involved datasets of proline substitution stability effects from deep mutational scanning and thermodynamic measurements.

Main Results:

  • Proscan successfully identifies known favorable proline substitutions in viral antigens.
  • The web server was validated against experimental data, demonstrating its predictive accuracy for proline substitution effects on protein stability.
  • The tool facilitates the identification and prioritization of proline designs for protein engineering applications.

Conclusions:

  • Proscan is a valuable resource for researchers seeking to engineer protein stability through proline substitutions.
  • The web server aids in the design of stable protein conformations, particularly for vaccine antigen targets.
  • This tool empowers scientists to advance protein design strategies for various biological applications.