Abstract : An evolutionary tree of key enzymes from the Complex-Iron-Sulfur-Molybdoenzyme (CISM) superfamily distinguishes “ancient” members, i.e. enzymes present already in the last universal common ancestor (LUCA) of prokaryotes, from more recently evolved subfamilies. The majority of the presented subfamilies and, as a consequence, the Molybdo-enzyme superfamily as a whole, appear to have existed in LUCA. The results are discussed with respect to the nature of bioenergetic substrates available to early life and to problems arising from the low solubility of molybdenum under conditions of the primordial Earth.
https://hal.archives-ouvertes.fr/hal-01608654 Contributor : Archive Ouverte ProdInraConnect in order to contact the contributor Submitted on : Thursday, November 28, 2019 - 10:40:30 AM Last modification on : Tuesday, January 18, 2022 - 10:18:03 AM Long-term archiving on: : Saturday, February 29, 2020 - 1:21:05 PM
Barbara Schoepp-Cothenet, Robert van Lis, Pascal Philippot, Axel Magalon, Michael J. Russell, et al.. The ineluctable requirement for the trans-iron elements molybdenum and/or tungsten in the origin of life. Scientific Reports, Nature Publishing Group, 2012, 2 (263), ⟨10.1038/srep00263⟩. ⟨hal-01608654⟩