• CATH: Protein structure classification

  • DALI: Dali fold classification

  • DIP: Database of Interacting Proteins

  • MIPS: Munich Information center for Protein Sequences

  • PDB: Protein Data Bank

  • Pfam: The Pfam database of protein families and HMMs (Washington, USA)

  • PIR: Protein Information Resource (National Biomedical Research Foundation)

  • PROSITE: Database of protein families and domains

  • SCOP: Structural Classification Of Proteins

  • SWISS-PROT: Protein knowledgebase

  • TOPS: Topology Of Protein Structure

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