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Title

Natural Pyrrhotite as a Catalyst in Prebiotic Chemical Evolution

AuthorsAldecoa, Alejandra López Ibáñez de; Roldán, Francisco Velasco; Menor-Salván, César
Issue Date28-Aug-2013
PublisherMultidisciplinary Digital Publishing Institute
CitationLife 3 (3): 502-517 (2013)
AbstractThe idea of an autotrophic organism as the first living being on Earth leads to the hypothesis of a protometabolic, complex chemical system. In one of the main hypotheses, the first metabolic systems emerged from the interaction between sulfide minerals and/or soluble iron-sulfide complexes and fluids rich in inorganic precursors, which are reduced and derived from crustal or mantle activity. Within this context, the possible catalytic role of pyrrhotite, one of the most abundant sulfide minerals, in biomimetic redox and carbon fixation reactions was studied. Our results showed that pyrrhotite, under simulated hydrothermal conditions, could catalyze the pyruvate synthesis from lactate and that a dynamic system formed by coupling iron metal and iron-sulfur species in an electrochemical cell could promote carbon fixation from thioacetate esters.
Publisher version (URL)https://doi.org/10.3390/life3030502
URIhttp://hdl.handle.net/10261/154367
DOI10.3390/life3030502
Identifiersdoi: 10.3390/life3030502
Appears in Collections:(CAB) Artículos
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