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Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
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Proteins targeted to the nucleus carry short stretches of amino acid sequences called the nuclear localization signal or NLS. Classical nuclear localization signals are of two types: monopartite and bipartite NLS. Monopartite classical NLS (cNLS) consists of a single cluster of 4-8 amino acids. Bipartite cNLS consists of two clusters of  2-3 amino acids and a 9-12 residue long proline-rich linker bridging the two clusters. Signal clusters are rich in positively charged amino acids such as...
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NPDock: a web server for protein-nucleic acid docking.

Irina Tuszynska1, Marcin Magnus2, Katarzyna Jonak2

  • 1Laboratory of Bioinformatics and Protein Engineering, International Institute of Molecular and Cell Biology in Warsaw, ul. Ks. Trojdena 4, PL-02-109 Warsaw, Poland Institute of Informatics, University of Warsaw, Banacha 2, PL-02-097 Warsaw, Poland.

Nucleic Acids Research
|May 16, 2015
PubMed
Summary
This summary is machine-generated.

NPDock is a new web server that uses computational docking to predict protein-nucleic acid complex structures. This method aids in understanding crucial biological interactions when experimental data is limited.

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Area of Science:

  • Structural biology
  • Computational biology
  • Bioinformatics

Background:

  • Protein-RNA and protein-DNA interactions are vital for numerous biological processes.
  • Understanding these interactions necessitates knowledge of protein-nucleic acid complex structures.
  • Experimental structure determination is often time-consuming and may not always be feasible.

Purpose of the Study:

  • To introduce NPDock, a novel web server for predicting protein-nucleic acid complexes.
  • To provide a user-friendly computational tool for modeling these interactions.
  • To facilitate the study of protein-nucleic acid complexes when experimental data is scarce.

Main Methods:

  • NPDock implements a computational workflow for docking protein and nucleic acid structures.
  • The workflow includes docking, pose scoring, model clustering, and refinement.
  • Input requires protein and DNA/RNA structures in PDB format, with advanced options available.

Main Results:

  • NPDock offers a novel approach to predicting protein-nucleic acid complexes.
  • The server provides a user-friendly interface with 3D visualization of results.
  • It enables control over docking parameters and access to intermediate results.

Conclusions:

  • NPDock is a valuable computational tool for researchers studying protein-nucleic acid interactions.
  • The web server simplifies the prediction of complex structures, complementing experimental methods.
  • It enhances the accessibility of structural insights into fundamental biological processes.