These files accompany a submission to Mol Cell Proteomics: 'Proteotranscriptomic profiling of 231-BR breast cancer cells: Identification of potential biomarkers and therapeutic targets for brain metastasis' Authors: Matthew D. Dun, Robert J. Chalkley, Sam Faulkner, Sheridan Keene, Kelly Avery-Kiejda, Rodney J. Scott, Murray J. Cairns, Ralph A. Bradshaw and Hubert Hondermarck