title: Natural and unnatural ribozymes: back to the primordial RNA world.
abstract: We review natural and in vitro selected ribozymes, for which combined studies could provide us with both insight into the functions performed by ancient RNA molecules in a primitive RNA world and a hypothesis about evolutionary steps that led to the contemporary world.
authors.affiliation: Department of Astronomy and Space Science, University of Florence, Largo E. Fermi 2, 50125 Florence, Italy. giulia.talini@unifi.it
authors.forename: Giulia
authors.initials: G
authors.lastname: Talini
authors.forename: Enzo
authors.initials: E
authors.lastname: Gallori
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Maurel
mesh_terms: D019020:Directed Molecular Evolution; D019418:Evolution, Chemical; D012313:RNA / Q000378:metabolism*; D016337:RNA, Catalytic / Q000378:metabolism*
chemical_list: D016337:RNA, Catalytic; D012313:RNA