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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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SATPdb: a database of structurally annotated therapeutic peptides.

Sandeep Singh1, Kumardeep Chaudhary1, Sandeep Kumar Dhanda1

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SATPdb is a new database featuring 19,192 unique therapeutic peptides with annotated structures. This resource aids researchers in discovering and analyzing peptide-based therapeutics for various medical applications.

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Area of Science:

  • Biochemistry
  • Bioinformatics
  • Drug Discovery

Background:

  • Therapeutic peptides are crucial in modern medicine.
  • A centralized, curated database for these peptides is needed.
  • Existing peptide databases lack comprehensive structural annotations.

Purpose of the Study:

  • To develop SATPdb, a comprehensive database of structurally annotated therapeutic peptides.
  • To facilitate research in peptide-based therapeutics by providing advanced search and analysis tools.
  • To consolidate information from diverse sources into a single, accessible platform.

Main Methods:

  • Curated data from 22 public and proprietary peptide databases.
  • Structural annotation using Protein Data Bank and prediction tools (I-TASSER, HHsearch, PEPstrMOD).
  • Classification of peptides into 10 functional categories.

Main Results:

  • SATPdb version 1.0 contains 19,192 unique, experimentally validated therapeutic peptide sequences (2-50 amino acids).
  • Includes peptides with natural, non-natural, and modified residues.
  • Features include structure/sequence similarity search, functional browsing, and identification of moonlighting peptides.

Conclusions:

  • SATPdb provides a valuable resource for researchers in peptide therapeutics.
  • The database enhances the discovery and development of novel peptide-based drugs.
  • Facilitates exploration of peptide structure-activity relationships for therapeutic applications.