Dataset used to train the topology predictor OCTOPUS. Fasta (.fa) and topology (.top) files are supplied. Toplogy annotation: i - inside o - outside M - transmembrane H - transmebrane hairpin R - reentrant originating from outside r - reentrant originating from inside D - dip originating from outside d - dip originating from inside . - unannotated residue T - unclassifiable residue (e.g. N-terminal located in the center of the membrane) The zip-file CROSSVAL_FILES.tar.gz contains the dataset files divided into the 10 subsets that was used for the cross-validation test of OCTOPUS.