PMID- 19719275 OWN - NLM STAT- MEDLINE DCOM- 20091110 LR - 20090901 IS - 1520-6106 (Print) IS - 1520-5207 (Linking) VI - 113 IP - 31 DP - 2009 Aug 6 TI - Copper-1,10-phenanthroline complexes binding to DNA: structural predictions from molecular simulations. PG - 10881-90 LID - 10.1021/jp901210g [doi] AB - Copper-1,10-phenanthroline (phen) complexes Cu(phen)(2)(), Cu(2-Clip-phen), and Cu(3-Clip-phen) (Clip = a serinol bridge between the phen parts) are typically employed as DNA-cleaving agents and are now becoming increasingly important for building multifunctional drugs with improved cytotoxic properties. For instance, Cu(3-Clip-phen) has been combined with distamycin-like minor-groove binders and cisplatin-derivatives, leading to promising results. Density Functional Theory (DFT) and docking calculations as well as molecular dynamics (MD) simulations were performed to describe the mode of binding to DNA of these complexes. Our data suggest the minor-groove binding to be more probable than (partial) intercalation and major-groove binding. In addition, it was found that a combination of factors including planarity, van der Waals interactions with DNA, and structural complementarities may be the key for the cleavage efficiency of these copper complexes. FAU - Robertazzi, Arturo AU - Robertazzi A AD - SISSA, via Beirut 4, I-0 I-34014 Trieste, Italy. FAU - Vargiu, Attilio Vittorio AU - Vargiu AV FAU - Magistrato, Alessandra AU - Magistrato A FAU - Ruggerone, Paolo AU - Ruggerone P FAU - Carloni, Paolo AU - Carloni P FAU - de Hoog, Paul AU - de Hoog P FAU - Reedijk, Jan AU - Reedijk J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Phys Chem B JT - The journal of physical chemistry. B JID - 101157530 RN - 0 (Organometallic Compounds) RN - 0 (Phenanthrolines) RN - 0 (copper-1,10-phenanthroline) RN - 9007-49-2 (DNA) SB - IM MH - Binding Sites MH - DNA/chemistry/*metabolism MH - Models, Molecular MH - Nucleic Acid Conformation MH - Organometallic Compounds/chemistry/*metabolism MH - Phenanthrolines/chemistry/*metabolism MH - Quantum Theory EDAT- 2009/09/02 06:00 MHDA- 2009/11/11 06:00 CRDT- 2009/09/02 09:00 PHST- 2009/09/02 09:00 [entrez] PHST- 2009/09/02 06:00 [pubmed] PHST- 2009/11/11 06:00 [medline] AID - 10.1021/jp901210g [doi] PST - ppublish SO - J Phys Chem B. 2009 Aug 6;113(31):10881-90. doi: 10.1021/jp901210g.