Zeth, K Department Protein Evolution, Max Planck Institute for Developmental Biology, Max Planck Society;
Zeth, K., Fokina, O., & Forchhammer, K. (2012). An engineered PII protein variant that senses a novel ligand: atomic resolution structure of the complex with citrate. Acta Crystallographica Section D: Biological Crystallography, 68(8), 901-908. doi:10.1107/S0907444912016447.