TOPDB Topology Data Bank of Transmembrane Proteins
Topology, Structure and Prediction.
Database revision: (4190 entries, 75211 topology data) Quick search:    

Database status

Database revision:
Revision date: 01/01/70
Entries: 4190
Topology data: 75211
Alpha helical proteins: 4067
Beta barrel proteins: 123
PubMed links: 4270
PDB links: 12816
UniProt links: 4190
Visitors: 614793

Current revision (revision number: )

Counts by experimental types

Experimental type Entry countsTopology data counts
Fusion12154922
PostTransMod13555924
Protease108351
Immunolocalisation175530
Chemical_modification40368
Structure198262994
Other35121
Total419075211

Number of proteins by structural types

Structural type Number of proteins
Alpha (bitopic) 1712
Alpha (polytopic) 2355
Alpha (total) 4067
Beta 123
Total 4190

Cross references

Database Number of cross references
PubMed 4270
PDB 12816
UniProt 4190

Distribution of transmembrane segment's number

Distribution of reliability

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