Department of Chemistry, University College London, London, United Kingdom.|Center of Technological Development in Health, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil.|Department of Chemistry, University College London, London, United Kingdom.|Proteomics Core Unit, Spanish National Cancer Research Centre (CNIO), Madrid, Spain.|Department of Chemistry, University College London, London, United Kingdom.|Department of Chemistry, University College London, London, United Kingdom.