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Peptide-based Identification of Functional Motifs and their Binding Partners
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SSMART: sequence-structure motif identification for RNA-binding proteins.

Alina Munteanu1,2, Neelanjan Mukherjee1, Uwe Ohler1,2

  • 1Berlin Institute for Medical Systems Biology, Max Delbruck Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.

Bioinformatics (Oxford, England)
|June 13, 2018
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Summary
This summary is machine-generated.

We developed SSMART, an RNA motif finder, to simultaneously analyze RNA sequence and structure. This tool uncovers RNA-binding protein targets, revealing both sequence and structural preferences for improved RNA-binding analysis.

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Area of Science:

  • Molecular Biology
  • Bioinformatics
  • Genomics

Background:

  • RNA-binding proteins (RBPs) are crucial regulators of RNA metabolism and function.
  • RBPs recognize RNA targets via specific sequence and structural properties.
  • Characterizing RBP binding sites often relies solely on primary sequence motifs, neglecting structural information.

Purpose of the Study:

  • To develop a novel computational tool for identifying RNA-binding protein (RBP) targets.
  • To simultaneously model both sequence and structural properties of RNA target sites.
  • To gain deeper insights into RBP-RNA interactions beyond sequence motifs.

Main Methods:

  • Developed SSMART, an RNA motif finder integrating sequence and structure analysis.
  • Represented sequence-structure motifs using consensus strings over a degenerate alphabet.
  • Extended IUPAC codes to incorporate nucleotide secondary structure preferences.

Main Results:

  • SSMART successfully recovered both sequence and structure motifs from synthetic data.
  • The tool accurately identified motifs in 3'UTR-like sequences with varying structural content.
  • Application to high-throughput data revealed known sequence motifs and novel structural preferences of RBPs.

Conclusions:

  • SSMART provides a powerful approach for characterizing RBP binding sites by integrating sequence and structure.
  • The tool enhances understanding of RBP-RNA interactions, moving beyond sequence-only motif analysis.
  • SSMART is a valuable resource for RNA biology research, available for public use.