2005
A Nuclear Magnetic Resonance Investigation of the Energetics of Basepair Opening Pathways in DNA
Coman D, Russu IM. A Nuclear Magnetic Resonance Investigation of the Energetics of Basepair Opening Pathways in DNA. Biophysical Journal 2005, 89: 3285-3292. PMID: 16126830, PMCID: PMC1366824, DOI: 10.1529/biophysj.105.065763.Peer-Reviewed Original ResearchConceptsOpening reactionFree energyNuclear magnetic resonance investigationFree energy relationshipsMagnetic resonance investigationNMR spectroscopySolvent protonsProton exchangeEnergy relationshipsTransition stateExchange catalystResonance investigationOpening pathwaysRate of exchangeEquilibrium constantsEnthalpy changeDNA duplexImino protonsReactionNeighboring basesProtonsDifferent temperaturesEnergeticsOpen stateCatalystBase Pair Opening in Three DNA-unwinding Elements*
Coman D, Russu IM. Base Pair Opening in Three DNA-unwinding Elements*. Journal Of Biological Chemistry 2005, 280: 20216-20221. PMID: 15784615, DOI: 10.1074/jbc.m502773200.Peer-Reviewed Original ResearchConceptsDNA-unwinding elementsBase pairsDNA replicationIndividual base pairsBase sequenceEscherichia coli chromosomeOrigin of replicationTA base pairsSpecific base sequencesColi chromosomeBacterial genomesBacterial chromosomeDNA double helixDNA moleculesStrand separationFirst characterizationChromosomesStart pointBase pair openingDouble helixDNAReplicationSequenceNuclear magnetic resonance spectroscopyLong-range effects
2004
Site‐resolved stabilization of a DNA triple helix by magnesium ions
Coman D, Russu IM. Site‐resolved stabilization of a DNA triple helix by magnesium ions. Nucleic Acids Research 2004, 32: 878-883. PMID: 14769945, PMCID: PMC373380, DOI: 10.1093/nar/gkh228.Peer-Reviewed Original ResearchMeSH KeywordsBase PairingBase SequenceCations, DivalentDNAMagnesiumNuclear Magnetic Resonance, BiomolecularNucleic Acid ConformationProtonsConceptsDNA triple helicesBase pairsTriple helixIndividual base pairsMolecular roleClosed conformationDNA triple-helical structuresTriple helical structureSame helixCorresponding base pairsPresence of Mg2HelixImino protonsParallel triple helicesObserved baseDNA oligonucleotideNew insightsWatson-CrickRate of exchangeMg2DNANMR spectroscopyEffect of Mg2Magnesium ionsCytosine
2003
Probing Hydrogen Bonding in a DNA Triple Helix Using Protium−Deuterium Fractionation Factors
Coman D, Russu IM. Probing Hydrogen Bonding in a DNA Triple Helix Using Protium−Deuterium Fractionation Factors. Journal Of The American Chemical Society 2003, 125: 6626-6627. PMID: 12769560, DOI: 10.1021/ja034223b.Peer-Reviewed Original ResearchMeSH KeywordsDeuteriumDNAHydrogen BondingNuclear Magnetic Resonance, BiomolecularNucleic Acid ConformationProtons
2002
Site-Resolved Energetics in DNA Triple Helices Containing G·TA and T·CG Triads †
Coman D, Russu IM. Site-Resolved Energetics in DNA Triple Helices Containing G·TA and T·CG Triads †. Biochemistry 2002, 41: 4407-4414. PMID: 11914088, DOI: 10.1021/bi011832s.Peer-Reviewed Original ResearchBase PairingDNAGuanineModels, ChemicalNucleic Acid ConformationProtonsThermodynamicsThymineTime Factors