A computational study of the phosphoryl transfer reaction between ATP and Dha in Aqueous Solution
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Título
A computational study of the phosphoryl transfer reaction between ATP and Dha in Aqueous SolutionFecha de publicación
2015Editor
Royal Society of ChemistryISSN
1477-0520; 1477-0539Cita bibliográfica
Organic & Biomolecular Chemistry, 2015, 13, 10179Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.rsc.org/En/content/articlepdf/2015/ob/c5ob01079aVersión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
Phosphoryl transfer reactions are ubiquitous in biology, being involved in processes ranging from energy
and signal transduction to the replication genetic material. Dihydroxyacetone phosphate (Dha-P), an
intermediate ... [+]
Phosphoryl transfer reactions are ubiquitous in biology, being involved in processes ranging from energy
and signal transduction to the replication genetic material. Dihydroxyacetone phosphate (Dha-P), an
intermediate of the synthesis of pyruvate and a very important building block in nature, can be generated
by converting free dihydroxyacetone (Dha) through the action of the dihydroxyacetone kinase enzyme. In
this paper the reference uncatalyzed reaction in solution has been studied in order to define the foundations
of the chemical reaction and to determine the most adequate computational method to describe
this electronically complex reaction. In particular, the phosphorylation reaction mechanism between
adenosine triphosphate (ATP) and Dha in aqueous solution has been studied by means of quantum mechanics/molecular
mechanics (QM/MM) Molecular Dynamics (MD) simulations with the QM subset of atoms
described with semi-empirical and DFT methods. The results appear to be strongly dependent on the
level of calculation, which will have to be taken into account for future studies of the reaction catalyzed
by enzymes. In particular, PM3/MM renders lower free energy barriers and a less endergonic process than
AM1d/MM and PM6/MM methods. Nevertheless, the concerted pathway was not located with the former
combination of potentials. [-]
Publicado en
Org. Biomol. Chem., 2015, 13Derechos de acceso
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