Retrosynthesis of CaCO3 via amorphous precursor particles using gastroliths of the Red Claw lobster (Cherax quadricarinatus)
Author
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Neira Carrillo, Andrónico
Author
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Fernández Garay, María Soledad
Author
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Poblete Hevia, Gonzalo Andrés
Author
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Arias Bautista, José Luis
Author
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Gebauer, Denis
Author
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Coelfen, Helmut
Admission date
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2018-05-22T14:10:46Z
Available date
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2018-05-22T14:10:46Z
Publication date
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2017
Cita de ítem
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Journal of Structural Biology 199 (2017) 46–56
es_ES
Identifier
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10.1016/j.jsb.2017.05.004
Identifier
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https://repositorio.uchile.cl/handle/2250/147969
Abstract
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Gastroliths are highly calcified structures formed in the cardiac stomach wall of crustaceans for the temporary storage of amorphous CaCO3 (ACC). The gastrolithic ACC is stabilized by the presence of biomolecules, and represents a novel model for research into biomineralization. For the first time, an in vitro biomimetic retrosynthesis of scaffolds of gastrolithic matrices with CaCO3 is presented. With the help of synthetic polyacrylic (PAA) and phytic (PA) acids, amorphous precursor particles were stabilized in double (DD) and gas (GD) diffusion crystallization assays. The presence of these synthetic molecules as efficient inhibitors of nucleation and growth of CaCO3, and the use of biological gastrolith scaffolds as confined reaction environments determined the kinetics of crystallization, and controlled the morphogenesis of CaCO3. The formation of ACC particles was demonstrated and their crystallization was followed by light microscopy, scanning and transmission electron microscopy, and electron diffraction. (C) 2017 Elsevier Inc. All rights reserved.
es_ES
Patrocinador
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FONDECYT, 1140660, 11070136
Chilean Council for Science and Technology (CONICYT)