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Socket2: a program for locating, visualizing and analyzing coiled-coil interfaces in protein structures.

Prasun Kumar1, Derek N Woolfson1,2,3

  • 1School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.

Bioinformatics (Oxford, England)
|September 9, 2021
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Summary
This summary is machine-generated.

Socket2 is an updated tool for identifying and analyzing alpha-helical coiled coils (CCs) in protein structures. It now handles any number of helices and provides enhanced visualization, aiding biological research.

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Area of Science:

  • Structural Biology
  • Bioinformatics
  • Protein Science

Background:

  • Protein-protein interactions are fundamental to biological processes.
  • Alpha-helical coiled coils (CCs) are a common motif mediating these interactions.
  • Efficient analysis of CCs is crucial for understanding protein function.

Purpose of the Study:

  • To update the Socket tool for enhanced identification and analysis of CCs.
  • To provide a user-friendly web server for researchers without expert guidance.
  • To expand CC analysis capabilities beyond the limitations of the original Socket.

Main Methods:

  • Development of Socket2, an upgraded algorithm for CC detection.
  • Implementation of a web server featuring NGL Viewer for 3D visualization.
  • Inclusion of features for analyzing sequence repeats, helix-packing angles, and core-packing geometries.

Main Results:

  • Socket2 identifies CCs with an unlimited number of helices.
  • It accommodates all 20 proteinogenic residues and nonnatural amino acids in KIH interfaces.
  • The new web server offers intuitive visualization and detailed structural analysis of CCs.

Conclusions:

  • Socket2 provides a robust and accessible platform for CC analysis.
  • The updated tool facilitates research on both natural and designed CCs.
  • Socket2 is freely available and supports a wide range of biological studies.