Topology Data Bank of Transmembrane Proteins
Topology, Structure and Prediction.

Database status

Database release: v3.3
Release date: 2025-01-12
Entries: 9588
Topology data: 685414
Alpha helical proteins: 9310
Beta barrel proteins: 279
PubMed links: 43320
PDB links: 31246
Visitors: 1004076

Membrane definition

Eukaryotic cell

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Nucleus membrane

The membrane surrounding the nucleus. This term is used when it is notknown if the protein is found in or associated with the inner or outernuclear membrane

  • Outside: Cytoplasm
  • Inside: Nucleoplasm