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Collegamenti



Novel adenine/thymine photodimerization channels mapped by PCM/TD-DFT calculations on dApT and TpdA dinucleotides (46 visite)

Martinez-fernandez L, Improta R

Photochem Photobiol Sci (ISSN: 1474-9092electronic, 1474-905xlinking), 2017 Jun 22; N/D: N/D-N/D.

Tipo di articolo: Journal Article,

Impact factor: 2.344

Impact factor a 5 anni: 2.474


Parole chiave: Non disponibili.

Url: Non disponibile.

Despite the biological relevance of AT-rich DNA sequences, the excited state paths associated with the photochemical reactions involving adenine and thymine stacked pairs have never been characterized, and the structure of the most abundant photoproduct in DNA is unknown. PCM/TD-M052X calculations on dApT and TpdA unveil the paths leading to the main photoproduct in TpdA, provide new insights into the reasons why it is not formed in dApT and show the existence of a new photochemical path, which could produce the precursor of the most abundant genomic AT/TA photoproduct. Our calculations confirm that anti/anti conformers are photochemically active and show that the dynamical solvation effects could significantly modulate the reaction yields.
*** IBB - CNR ***

Consiglio Nazionale delle Ricerche, Istituto di Biostrutture e Bioimmagini, 80134 Naples, Italy., Consiglio Nazionale delle Ricerche, Istituto di Biostrutture e Bioimmagini, 80134 Naples, Italy and LIDYL, CEA, CNRS, Universite Paris, Saclay, F-91191 Gif-sur-Yvette, France. robimp@unina.it.,
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Contiene: [X]      Estesa         Autori: [X]      Tipo di lavoro: [X]
Data iniziale: Data finale: [X]      Sede: Affiliazione IBB     
    
[Pulisci modulo]
De Simone G, Langella E, Esposito D, Supuran CT, Monti SM, Winum JY, Alterio V
* Insights into the binding mode of sulphamates and sulphamides to hCA II: crystallographic studies and binding free energy calculations (78 visite)
J Enzyme Inhib Med Chem (ISSN: 1475-6374electronic, 1475-6366linking), 2017 Dec; 32(1): 1002-1011.
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Conti I, Martinez-fernandez L, Esposito L, Hofinger S, Nenov A, Garavelli M, Improta R
* Multiple Electronic and Structural Factors Control Cyclobutane Pyrimidine Dimer and 6-4 Thymine-Thymine Photodimerization in a DNA Duplex (44 visite)
Chemistry (ISSN: 1521-3765electronic, 0947-6539linking), 2017 Oct 26; 23(60): 15177-15188.
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Martinez-fernandez L, Pepino AJ, Segarra-marti J, Jovaisaite J, Vaya I, Nenov A, Markovitsi D, Gustavsson T, Banyasz A, Garavelli M, Improta R
* Photophysics of Deoxycytidine and 5-Methyldeoxycytidine in Solution: A Comprehensive Picture by Quantum Mechanical Calculations and Femtosecond Fluorescence Spectroscopy (57 visite)
J Am Chem Soc (ISSN: 1520-5126electronic, 0002-7863linking, 0002-7863print), 2017 Jun 14; 139(23): 7780-7791.
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Sholokh M, Improta R, Mori M, Sharma R, Kenfack C, Shin D, Voltz K, Stote RH, Zaporozhets OA, Botta M, Tor Y, Mely Y
* Tautomers of a Fluorescent G Surrogate and Their Distinct Photophysics Provide Additional Information Channels (68 visite)
Angew Chem Int Ed (ISSN: 1521-3773electronic, 1433-7851linking), 2016 Jun 8; N/D: N/D-N/D.
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Changenet-Barret P, Gustavsson T, Improta R, Markovitsi D
* Ultrafast Excited-State Deactivation of 8-Hydroxy-2′-deoxyguanosine Studied by Femtosecond Fluorescence Spectroscopy and Quantum-Chemical Calculations (98 visite)
J Phys Chem A (ISSN: 1089-5639, 1520-5215electronic), 2015; 119(23): 6131-6139.
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Improta R, Ferrer FJ, Stendardo E, Santoro F
* Quantum-classical calculation of the absorption and emission spectral shapes of oligothiophenes at low and room temperature by first-principle calculations (53 visite)
Chemphyschem (ISSN: 1439-7641electronic, 1439-4235linking), 2014 Oct 20; 15(15): 3320-3333.
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Improta R
* Quantum mechanical calculations unveil the structure and properties of the absorbing and emitting excited electronic states of guanine quadruplex (108 visite)
Chemistry (ISSN: 0947-6539, 1521-3765, 1521-3765electronic), 2014 Jun 23; 20(26): 8106-8115.
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Santoro F, Improta R, Fahleson T, Kauczor J, Norman P, Coriani S
* Relative stability of the La and Lb excited states in adenine and guanine: Direct evidence from TD-DFT calculations of MCD spectra (97 visite)
J Phys Chem Lett (ISSN: 1948-7185, 1948-7185electronic), 2014 Jun 5; 5(11): 1806-1811.
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Improta R, Vitagliano L,  Esposito L
* Correction: Peptide bond distortions from planarity: New insights from quantum mechanical calculations and peptide/protein crystal structures (PLoS ONE) (80 visite)
Plos One (ISSN: 1932-6203, 1932-6203electronic), 2014; 9(1): N/D-N/D.
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Dolga AM, Netter MF, Perocchi F, Doti N, Meissner L, Tobaben S, Grohm J, Zischka H, Plesnila N, Decher N, Culmsee C
* Mitochondrial Small Conductance SK2 Channels Prevent Glutamate-induced Oxytosis and Mitochondrial Dysfunction (93 visite)
J Biol Chem Journal Of Biological Chemistry (ISSN: 0021-9258, 1083-351x), 2013 Apr 12; 288(15): 10792-10804.
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Dolga AM, Letsche T, Gold M, Doti N, Bacher M, Chiamvimonvat N, Dodel R, Culmsee C
* Activation of KCNN3/SK3/K(Ca)2. 3 channels attenuates enhanced calcium influx and inflammatory cytokine production in activated microglia (133 visite)
Glia (ISSN: 1098-1136), 2012 Dec; 60(12): 2050-2064.
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Stendardo E, Avila FJA, Santoro F, Improta R
* Vibrationally resolved absorption and emission spectra of dithiophene in the gas phase and in solution by first-principle quantum mechanical calculations (89 visite)
J Chem Theory Comput (ISSN: 1549-9618, 1549-9626electronic, 1549-9618linking), 2012; 8(11): 4483-4493.
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Improta R, Vitagliano L, Esposito L
* Peptide bond distortions from planarity: New insights from quantum mechanical calculations and peptide/protein crystal structures (133 visite)
Plos One (ISSN: 1932-6203, 1932-6203electronic), 2011 Sep 16; 6(9): e24533-e24533.
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Abbate M, Casella G, Fiore T, Grasso G, Pellerito C, Scopelliti M, Spinella A, Pellerito L
* Structural characterization of triorganotin(IV) complexes with sodium fusidate and DFT calculations (106 visite)
J Organomet Chem (ISSN: 0022-328x), 2010 May 1; 695(9): 1405-1413.
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Karunakaran V, Kleinermanns K, Improta R, Kovalenko SA
* Photoinduced dynamics of guanosine monophosphate in water from broad-band transient absorption spectroscopy and quantum-chemical calculations (87 visite)
J Am Chem Soc (ISSN: 0002-7863, 0002-2786, 1520-5126), 2009; 131(16): 5839-5850.
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Improta R, Barone V
* The excited states of adenine and thymine nucleoside and nucleotide in aqueous solution: A comparative study by time-dependent DFT calculations (91 visite)
Theor Chem Acc (ISSN: 1432-881x), 2008 Jul; 120(4-6): 491-497.
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Santoro F, Barone V, Improta R
* Can TD-DFT calculations accurately describe the excited states behavior of stacked nucleobases? The cytosine dimer as a test case (98 visite)
J Comput Chem (ISSN: 0192-8651, 1096-987xelectronic, 0192-8651linking), 2008 Apr 30; 29(6): 957-964.
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Improta R, Barone V, Santoro F
* Ab initio calculations of absorption spectra of large molecules in solution: Coumarin C153 (89 visite)
Angew Chem Int Ed (ISSN: 1433-7851, 1521-3773electronic), 2007; 46(3): 405-408.
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Santoro F, Barone V, Improta R
* Influence of base stacking on excited-state behavior of polyadenine in water, based on time-dependent density functional calculations (69 visite)
Proc Natl Acad Sci U S A (ISSN: 0027-8424, 1091-6490, 0027-8424print), 2007; 104(24): 9931-9936.
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Improta R, Barone V, Scalmani G, Frisch MJ
* A state-specific polarizable continuum model time dependent density functional theory method for excited state calculations in solution (90 visite)
J Chem Phys (ISSN: 0021-9606, 0897-690online), 2006 Sep 7; 125(5): N/D-N/D.
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Langella E, Improta R, Crescenzi O, Barone V
* Assessing the acid-base and conformational properties of histidine residues in human prion protein (125-228) by means of pKα calculations and molecular dynamics simulations (148 visite)
Proteins (ISSN: 0887-3585, 1097-0134, 1097-0134electronic), 2006 Jul 1; 64(1): 167-177.
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Improta R, Barone V, Scalmani G, Frisch MJ
* A State-Specific Pcm Td-Dft Method For Equilibrium And Non-Equilibrium Excited State Calculations In Solution (116 visite)
J Chem Phys (ISSN: 0897-690online, 0021-9606printed), 2006; 125(5): 54103-54103.
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Tedesco C, Immediata I, Gregoli L, Vitagliano L, Immirzi A, Neri P
* Interconnected water channels and isolated hydrophobic cavities in a calixarene-based, nanoporous supramolecular architecture (70 visite)
Crystengcomm (ISSN: 1466-8033), 2005; 7: 449-453.
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Pappalardo M, Milardi D, Grasso DM, La Rosa C
* Free energy perturbation and molecular dynamics calculations of copper binding to azurin (103 visite)
J Comput Chem (ISSN: 0192-8651, 1096-987xelectronic), 2003 Apr 30; 24(6): 779-785.
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Morelli G, De Luca S, Tesauro D, Saviano M, Pedone C, Dolmella A, Visentin R, Mazzi U
* CCK8 peptide derivatized with diphenylphosphine for rhenium labelling: Synthesis and molecular mechanics calculations (91 visite)
J Pept Sci (ISSN: 1075-2617, 1099-1387, 1075-2617print), 2002 Jul; 8(7): 373-381.
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Improta R, Kudin KN, Scuseria GE, Barone V
* Structure and magnetic properties of nitroxide molecular crystals by density functional calculations employing periodic boundary conditions (74 visite)
J Am Chem Soc (ISSN: 0002-7863, 0002-2786, 1520-5126), 2002 Jan 9; 124(1): 113-120.
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Maccarrone G, Nardin G, Randaccio L, Tabbì G, Rosi M, Sgamellotti A, Rizzarelli E, Zangrando E
Structure Of Copper(ii) Complexes With L-Leucyl-D-Phenylalanine Or L-Leucyl-L-Phenylalanine And Lcao-Scf-Mo Calculations On The Stabilization Of Copper(ii) Complexes Due To D-π Interaction With Aromatic Ring (116 visite)
Dalton Trans, 1996; N/D: 3449-3453.
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27 Records (25 escludendo Abstract e Conferenze).
Impact factor totale: 138.642 (131.384 escludendo Abstract e Conferenze).
Impact factor a 5 anni totale: 147.012 (139.333 escludendo Abstract e Conferenze).







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