Media type: E-Article Title: The Evolution of Histidine Biosynthesis in Archaea: Insights into the his Genes Structure and Organization in LUCA Contributor: Fondi, Marco; Emiliani, Giovanni; Liò, Pietro; Gribaldo, Simonetta; Fani, Renato imprint: Springer Science and Business Media LLC, 2009 Published in: Journal of Molecular Evolution Language: English DOI: 10.1007/s00239-009-9286-6 ISSN: 1432-1432; 0022-2844 Keywords: Genetics ; Molecular Biology ; Ecology, Evolution, Behavior and Systematics Origination: Footnote: