DB-TMR contains 40672 transmembrane regions of 9392 transmembrane proteins automatically extracted from the SwissProt database. Each transmembrane segment is described in one record containing:

• the access code of the sequence containing the segment (ID line),
• the organism classification (OC lines),
• the length of the transmembrane region,
• the direction of the transmembrane when it can be deducted thanks to the keywords 'CYTOPLASMIC' and 'EXTRACELLULAR' of the feature table,
• the amino-acid letters of the five-residue extension outside the transmembrane for the N and C-terminal side,
• the amino-acid letters of the residues located inside the transmembrane.

The fields of each record are by default separated with spaces but you can specify a different separator here:

Transmembrane segments that extend beyong the end(s) of the sequenced region or with unknown endpoints can be discarted by selecting this checkbox

You can download the whole database now or choose the organisms or species that you want to include