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A database of ß-barrel outer membrane proteins from Gram-negative bacteria. Information included in OMPdb consists of sequence data, as well as annotation for structural characteristics (such as the transmembrane segments), literature references and links to other public databases, features that are unique worldwide. OMPdb is useful for genome-wide analyses, comparative genomics as well as for providing training and test sets for predictive algorithms regarding transmembrane β-barrels.


A collection of domains and sequence motifs located conservatively in one side of membranes either in transmembrane or globular proteins. TOPDOM was created by predicting the transmembrane status and topology of all protein sequence in UniProt database by the CCTOP algorithm and scanning by specific domain or motif detecting algorithms. The identified domain or motif was added to the database if it was uniformly annotated in the same side of the membrane of the various proteins in UniProt database.

TMPL / Transmembrane protein Models Positioned in the Lipid

Provides a database of transmembrane protein models positioned in the lipid bilayer. TMPL is a resource that includes atomistic and coarse-grained protein models oriented in the membrane by ANVIL algorithm, which has been designed to process both representations of protein structure. Users has the possibility to upload protein models and their membrane assignments to database. Most of the protein structures in TMPL come from external databases and were selected for containing the term “transmembrane” in either their keywords, title or description.