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  • Crystallization as a selection force at the polymerization of nucleotides in a prebiotic context.

Crystallization as a selection force at the polymerization of nucleotides in a prebiotic context.

iScience (2023-09-04)
Judit E Šponer, Jiří Šponer, Jakub Výravský, Roman Matyášek, Aleš Kovařík, Wojciech Dudziak, Katarzyna Ślepokura
摘要

Accumulation and selection of nucleotides is one of the most challenging problems surrounding the origin of the first RNA molecules on our planet. In the current work we propose that guanosine 3',5' cyclic monophosphate could selectively crystallize upon evaporation of an acidic prebiotic pool containing various other nucleotides. The conditions of the evaporative crystallization are fully compatible with the subsequent acid catalyzed polymerization of this cyclic nucleotide reported in earlier studies and may be relevant in a broad range of possible prebiotic environments. Albeit cytidine 3',5' cyclic monophosphate has the ability to selectively accumulate under the same conditions, its crystal structure is not likely to support polymer formation.

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甘氨酸, BioUltra, for molecular biology, ≥99.0% (NT)
Sigma-Aldrich
乙二胺四乙酸 四钠盐 二水合物, BioReagent, suitable for cell culture, 98.5-102.0%