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DC Field | Value | Language |
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dc.contributor.author | Ribó i Trujillo, Josep M. | - |
dc.contributor.author | Crusats i Aliguer, Joaquim | - |
dc.contributor.author | El Hachemi, Zoubir | - |
dc.contributor.author | Moyano i Baldoire, Albert | - |
dc.contributor.author | Blanco, Celia | - |
dc.contributor.author | Hochberg, David | - |
dc.date.accessioned | 2013-04-26T06:24:28Z | - |
dc.date.available | 2013-04-26T06:24:28Z | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 1531-1074 | - |
dc.identifier.uri | http://hdl.handle.net/2445/36348 | - |
dc.description.abstract | The emergence of chirality in enantioselective autocatalysis for compounds unable to transform according to the Frank-like reaction network is discussed with respect to the controversial limited enantioselectivity (LES) model composed of coupled enantioselective and non-enantioselective autocatalyses. The LES model cannot lead to spontaneous mirror symmetry breaking (SMSB) either in closed systems with a homogeneous temperature distribution or in closed systems with a stationary non-uniform temperature distribution. However, simulations of chemical kinetics in a two-compartment model demonstrate that SMSB may occur if both autocatalytic reactions are spatially separated at different temperatures in different compartments but coupled under the action of a continuous internal flow. In such conditions, the system can evolve, for certain reaction and system parameters, toward a chiral stationary state; that is, the system is able to reach a bifurcation point leading to SMSB. Numerical simulations in which reasonable chemical parameters have been used suggest that an ade- quate scenario for such a SMSB would be that of abyssal hydrothermal vents, by virtue of the typical temper- ature gradients found there and the role of inorganic solids mediating chemical reactions in an enzyme-like role. Key Words: Homochirality Prebiotic chemistry. | - |
dc.format.extent | 11 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Mary Ann Liebert, Inc. | - |
dc.relation.isformatof | Reproducció del document publicat a: http://dx.doi.org/10.1089/ast.2012.0904 | - |
dc.relation.ispartof | Astrobiology, 2013, vol. 13, num. 02, p. 132-142 | - |
dc.relation.uri | http://dx.doi.org/10.1089/ast.2012.0904 | - |
dc.rights | (c) Mary Ann Liebert, Inc., 2013 | - |
dc.source | Articles publicats en revistes (Química Inorgànica i Orgànica) | - |
dc.subject.classification | Exobiologia | - |
dc.subject.classification | Macromolècules | - |
dc.subject.classification | Biomolècules | - |
dc.subject.classification | Cosmologia | - |
dc.subject.classification | Quiralitat | - |
dc.subject.other | Exobiology | - |
dc.subject.other | Macromolecules | - |
dc.subject.other | Biomolecules | - |
dc.subject.other | Cosmology | - |
dc.subject.other | Chirality | - |
dc.title | Spontaneous mirror symmetry breaking in the limited enantioselective autocatalysis model: abyssal hydrotermal vents as scenario for the emergence of chirality in prebiotic chemistry | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 621733 | - |
dc.date.updated | 2013-04-26T06:24:28Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) |
Files in This Item:
File | Description | Size | Format | |
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621733.pdf | 442 kB | Adobe PDF | View/Open |
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