Gama-Castro, S., Salgado, H., Santos-Zavaleta, A., Ledezma-Tejeida, D., Muñiz-Rascado, L., García-Sotelo, J. S., Alquicira-Hernández, K., Martínez-Flores, I., Pannier, L., Castro-Mondragón, J. A., Medina-Rivera, A., Solano-Lira, H., Bonavides-Martínez, C., Pérez-Rueda, E., Alquicira-Hernández, S., Porrón-Sotelo, L., López-Fuentes, A., Hernández-Koutoucheva, A., Moral-Chávez, V. D., Rinaldi, F., & Collado-Vides, J. (2016). regulonDB version 9.0: high-level integration of gene regulation, coexpression, motif clustering and beyond. Nucleic acids research, 44, D133–D143. http://access.bl.uk/ark:/81055/vdc_100126957386.0x00003f