2015
Untemplated Nonenzymatic Polymerization of 3 ',5 ' cGMP: A Plausible Route to 3 ',5 '-Linked Oligonucleotides in Primordia
ŠPONEROVÁ, Judit; Jiří ŠPONER; Alessandra GIORGI; Ernesto DI MAURO; Samanta PINO et al.Základní údaje
Originální název
Untemplated Nonenzymatic Polymerization of 3 ',5 ' cGMP: A Plausible Route to 3 ',5 '-Linked Oligonucleotides in Primordia
Autoři
ŠPONEROVÁ, Judit; Jiří ŠPONER; Alessandra GIORGI; Ernesto DI MAURO; Samanta PINO a Giovanna COSTANZO
Vydání
Journal of Physical Chemistry B, WASHINGTON, AMER CHEMICAL SOC, 2015, 1520-6106
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10403 Physical chemistry
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.187
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14740/15:00082892
Organizační jednotka
Středoevropský technologický institut
UT WoS
EID Scopus
Klíčová slova anglicky
GAUSSIAN-BASIS SETS; PREBIOTIC CHEMISTRY; RNA WORLD; ATOMS LI; ORIGIN; MODEL; ENERGIES; GMP; MONTMORILLONITE; STABILITY
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 29. 3. 2016 15:11, Mgr. Eva Špillingová
Anotace
V originále
The high-energy 3',5' phosphodiester linkages conserved in 3',5' cyclic GMPs offer a genuine solution for monomer activation required by the transphosphorylation reactions that could lead to the emergence of the first simple oligonucleotide sequences on the early Earth. In this work we provide an in-depth characterization of the effect of the reaction conditions on the yield of the polymerization reaction of 3',5' cyclic GMPs both in aqueous environment as well as under dehydrating conditions. We show that the threshold temperature of the polymerization is about 30 degrees C lower under dehydrating conditions than in solution. In addition, we present a plausible exergonic reaction pathway for the polymerization reaction, which involves transient formation of anionic centers at the O3' positions of the participating riboses. We suggest that excess Na+ cations inhibit the polymerization reaction because they block the anionic mechanism via neutralizing the negatively charged O3'. Our experimental findings are compatible with a prebiotic scenario, where gradual desiccation of the environment could induce polymerization of 3',5' cyclic GMPs synthesized in liquid.
Návaznosti
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