If you use OMPdb in your research, please cite the respective papers: OMPdb: A Global Hub of Beta-Barrel Outer Membrane Proteins OMPdb: A database of beta-barrel outer membrane proteins from Gram negative bacteria You can read more regarding the annotation of eukaryotic beta barrels here: The landscape of eukaryotic transmembrane beta-barrel proteins The paper describing the PRED-TMBB2 method that is used in beta strands annotation can be found here: PRED-TMBB2: Improved topology prediction and detection of beta-barrel outer membrane proteins Questions/comments: Please contact pbagos@compgen.org