On the interaction of bare and hydrated aluminum ion with nucleic acid bases (U, T, C, A, G) and monophosphate nucleotides (UMP, dTMP, dCMP, dAMP, dGMP).
The B3LYP/6-311+G(2df,2p) density functional approach was used to study the interaction that aluminum trication, in the bare and hydrated forms, establishes with the nucleic acid bases and the corresponding monophosphate nucleotides. In this investigation, we determine equilibrium geometry of all possible complexes resulting from the attachment of the ion on the different binding sites selected on each ligand. The relative energies of complexes and metal ion affinities are also given. The most meaningful aspect was found to lie in the energetics of this interaction that underlines a very high affinity of aluminum ion for the examined biological systems.
Mazzuca
Donatella
D
Dipartimento di Chimica and Centro di Calcolo ad Alte Prestazioni per Elaborazioni Parallele e Distribuite-Centro d'Eccellenza MURST, Università della Calabria, I-87030 Arcavacata di Rende (CS), Italy.
Russo
Nino
N
Toscano
Marirosa
M
Grand
André
A
D000535:Aluminum / Q000737:chemistry*; D020029:Base Pairing; D007477:Ions / Q000737:chemistry; D008956:Models, Chemical; D015394:Molecular Structure; D009696:Nucleic Acids / Q000737:chemistry*; D009711:Nucleotides / Q000737:chemistry*; D013237:Stereoisomerism
D007477:Ions; D009696:Nucleic Acids; D009711:Nucleotides; D000535:Aluminum