1. 1Programa de Genómica Funcional de Procariotes, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos C. P. 62210, México
2. 3Faculty of Science, Department of Chemistry and Biochemistry, University of Bern, 3010 Bern, Switzerland
3. 2Mass Spectrometry and Proteomics Laboratory, Department of Clinical Research, University of Bern, 3010 Bern, Switzerland
4. 4Aix Marseille University, INSERM, TAGC, Theory and Approaches of Genomic Complexity, UMR_S 1090, Marseille, France