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Copper(II) complexes of prion protein PEG11-tetraoctarepeat fragment: spectroscopic and voltammetric studies (94 visite)

Bonomo RP, Di Natale G, Rizzarelli E, Tabbì G, Vagliasindi LI

Dalton Trans (ISSN: 1477-9226, 1477-7922, 1477-9234), 2009 Apr 14; (14): 2637-2646.



Tipo di articolo: Journal Article, Research Support, Non-U. S. Gov'T,

Impact factor: 2.908, Impact factor a 5 anni: 3.138

Url: http://www.scopus.com/inward/record.url?eid=2-s2.0-66349087433&partnerID=40&md5=51121d3d019206683603f12671ce2646

Parole chiave: Carbonyl Oxygen Atoms, Cooperativity, Coordination Sites, Copper Atoms, Copper Complexes, Copper Sites, Electron Transfer Process, Epr Parameters, Frozen Solutions, Intermediate Complex, Neutral Ph, Nitrogen Atom, Prion Protein, Pyramidal Geometries, Spectroscopic Data, Voltammetric Measurements, Voltammetric Studies, Bioelectric Phenomena, Chromophores, Coordination Reactions, Electron Resonance, Electron Spin Resonance Spectroscopy, Paramagnetic Resonance, Polyethylene Glycols, Quantum Theory, Copper Compounds, Ligand, Nitric Oxide, Organometallic Compound, Peptide, Article, Chemistry, Electrochemistry, Ultraviolet Spectrophotometry, Electrodes, Copper Chemistry, Nitric Oxide Chemistry, Organometallic Compounds Chemistry, Peptides Chemistry, Prions Chemistry,

Affiliazioni:

*** IBB - CNR ***
Dipartimento di Scienze Chimiche, Universita di Catania, Viale A. Doria 6, 95125, Catania, Italy. rbonomo@unict. it
Istituto di Biostrutture e Bioimmagini, CNR, Unit Organizzativa di Supporto di Catania, Viale A. Doria 6, 95125, Catania, Italy



Riferimenti:

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Spectroscopic (UV-Vis and EPR) and voltammetric studies have been carried out on the copper (ii) complexes with the Ac-PEG11- (PHGGGWGQ) 4-NH2 (L) polypeptide. In the ratios Cu: L 3: 1 and 4: 1, the two [Cu3 (L) H-6] and [Cu4 (L) H-8] complex species have been characterized at neutral pH values. All the copper atoms occupy similar coordination sites formed by imidazole, peptidic nitrogen atoms and carbonyl oxygen atoms in a square base pyramidal geometry. Voltammetric measurements on these systems point out the cooperativity in the electron transfer processes among the copper (ii) sites during their reduction. NO interaction with these polynuclear copper species is characterized by the reduction of the copper sites through the formation of two different intermediate complex species. When an excess of the Ac-PEG11- (PHGGGWGQ) 4-NH2 ligand is considered, frozen solution EPR parameters and UV-Vis spectroscopic data identify the [Cu (Nim) 4] 2+ chromophore, which does not interact with NO. 2009 The Royal Society of Chemistry
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Benetti F, Biarnes X, Attanasio F, Rizzarelli E, Laio A, Legname G
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La Mendola D, Magrì A, Vagliasindi LI, Hansson Ö, Bonomo RP, Rizzarelli E
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Di Natale G, Pappalardo G, Milardi D, Sciacca MF, Attanasio F, La Mendola D, Rizzarelli E
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Impact Factor: 3.647
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Turi I, Kállay C, Szikszai D, Pappalardo G, Di Natale G, De Bona P, Rizzarelli E, Sóvágó I
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Benetti F, Pastorino L, Attanasio F, Rizzarelli E, Legname G
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Impact Factor: 3.647
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Pietropaolo A, Muccioli L, Zannoni C, Rizzarelli E
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Impact Factor: 3.453
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La Mendola D, Pietropaolo A, Pappalardo G, Zannoni C, Rizzarelli E
* Prion Proteins Leading to Neurodegeneration (vol 5, pg 579, 2008) (93 visite)
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Impact Factor: 4.971
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Di Natale G, Osz K, Nagy Z, Sanna D, Micera G, Pappalardo G, Sovago I, Rizzarelli E
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Impact Factor: 4.657
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La Mendola D, Magrì A, Hansson O, Bonomo RP, Rizzarelli E
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Ronga L, Palladino P, Ragone R, Benedetti E, Rossi F
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La Mendola D, Pietropaolo A, Pappalardo G, Zannoni C, Rizzarelli E
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Impact Factor: 4.132
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Bonomo RP, Pappalardo G, Rizzarelli E, Tabbì G, Vagliasindi LI
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Impact Factor: 3.58
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Pietropaolo A, Muccioli L, Zannoni C, La Mendola D, Maccarrone G, Pappalardo G, Rizzarelli E
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Impact Factor: 4.189
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De Simone A, Pedone C, Vitagliano L
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Biochem Biophys Res Commun (ISSN: 1090-2104, 0006-291x, 1090-2104electronic), 2008 Feb 15; 366(3): 800-806.
Impact Factor: 2.648
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Ronga L, Palladino P, Saviano G, Tancredi T, Benedetti E, Ragone R, Rossi F
* Structural characterization of a neurotoxic threonine-rich peptide corresponding to the human prion protein α2-helical 180-195 segment and comparison with full-length α2-helix-derived peptides (139 visite)
J Pept Sci (ISSN: 1075-2617, 1099-1387, 1075-2617print), 2008; 14(10): 1096-1102.
Impact Factor: 1.654
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Bonomo RP, Pappalardo G, Rizzarelli E, Santoro AM, Tabbì G, Vagliasindi LI
* Nitrogen oxide interaction with copper complexes formed by small peptides belonging to the prion protein octa-repeat region (145 visite)
Dalton Trans (ISSN: 1477-9226, 1477-9234, 1477-9234electronic), 2007 Apr 14; (14): 1400-1408.
Impact Factor: 3.212
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Ronga L, Langella E, Palladino P, Marasco D, Tizzano B, Saviano M, Pedone C, Improta R, Ruvo M
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Impact Factor: 3.354
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Ronga L, Palladino P, Costantini S, Facchiano A, Ruvo M, Benedetti E, Ragone R, Rossi F
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Impact Factor: 3.259
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Rao M, Russo F, Granata V, Berisio R, Zagari A, Gianfreda L
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Impact Factor: 2.58
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Osz K, Nagy Z, Pappalardo G, Di Natale G, Sanna D, Micera G, Rizzarelli E, Sóvágó I
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Impact Factor: 5.33
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Pappalardo M, Milardi D, Grasso D, La Rosa C
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New J Chem (ISSN: 1144-0546), 2007; 31(6): 901-905.
Impact Factor: 2.651
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Ronga L, Palladino P, Tizzano B, Marasco D, Benedetti E, Ragone R, Rossi F
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Impact Factor: 1.801
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Mazzarella L, Vergara A, Vitagliano L, Merlino A, Bonomi G, Scala S, Verde C, Di Prisco G
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Esposito L, Pedone C, Vitagliano L
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Proc Natl Acad Sci U S A (ISSN: 0027-8424, 1091-6490, 0027-8424print), 2006 Sep 1; 103(31): 11533-11538.
Impact Factor: 9.643
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Ronga L, Tizzano B, Palladino P, Ragone R, Urso E, Maffia M, Ruvo M, Benedetti E, Rossi F
* The prion protein: structural features and related toxic peptides (131 visite)
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Joszal V, Nagy Z, Osz K, Sanna D, Di Natale G, La Mendola D, Pappalardo G, Rizzarelli E, Sovago I
* Transition metal complexes of terminally protected peptides containing histidyl residues (155 visite)
J Chem Res (ISSN: 0162-0134, 1873-3344, 0162-0134print), 2006 Sep; 100(8): 1399-1409.
Impact Factor: 2.654
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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 (179 visite)
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Impact Factor: 3.73
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Granata V, Palladino P, Tizzano B, Negro A, Berisio R, Zagari A
* The effect of the osmolyte trimethylamine N-oxide on the stability of the prion protein at low pH (82 visite)
Biopolymers (ISSN: 0006-3525, 0006-6352, 0006-3525print), 2006 Jun 15; 82(3): 234-240.
Impact Factor: 2.48
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Mazzarella L, Bonomi G, Lubrano MC, Merlino A, Riccio A, Vergara A, Vitagliano L, Verde C, Di Prisco G
* Minimal structural requirements for root effect: Crystal structure of the cathodic hemoglobin isolated from the Antarctic fish Trematomus newnesi (130 visite)
Proteins (ISSN: 0887-3585, 1097-0134, 1097-0134electronic), 2006 Feb 1; 62(2): 316-321.
Impact Factor: 3.73
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Palladino P, Ronga L, Tizzano B, Rossi F, Ragone R, Tancredi T, Saviano G, Facchiano A, Costantini S, Ruvo M, Benedetti E
* Prion protein misfolding: Conformational stability of the alpha 2-helix (87 visite)
Understanding Biology Using Peptides, 2006; N/D: N/D-N/D.
Impact Factor: 2.614
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Grasso D, Grasso G, Guantieri V, Impellizzeri G, La Rosa C, Milardi D, Micera G, Osz K, Pappalardo G, Rizzarelli E, Sanna D, Sovago I
* Environmental effects on a prion's helix II domain: copper(II) and membrane interactions with PrP180-193 and its analogues (101 visite)
Chemistry (ISSN: 0947-6539, 1521-3765, 1521-3765electronic), 2005 Dec 23; 12(2): 537-547.
Impact Factor: 4.907
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La Mendola D, Bonomo RP, Impellizzeri G, Maccarrone G, Pappalardo G, Pietropaolo A, Rizzarelli E, Zito V
* Copper(II) complexes with chicken prion repeats: Influence of proline and tyrosine residues on the coordination features (110 visite)
J Biol Inorg Chem (ISSN: 0949-8257, 1432-1327electronic, 0949-8257print), 2005 Sep; 10(5): 463-475.
Impact Factor: 3.224
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Tizzano B, Palladino P, De Capua A, Marasco D, Rossi F, Benedetti E, Pedone C, Ragone R, Ruvo M
* The Human Prion Protein Alpha2 Helix: A Thermodynamic Study Of Its Conformational Preferences (112 visite)
Proteins (ISSN: 0887-3585, 1097-0134, 1097-0134electronic), 2005 Apr 1; 59(1): 72-79.
Impact Factor: 4.684
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Di Natale G, Impellizzeri G, Pappalardo G
* Conformational properties of peptide fragments homologous to the 106-114 and 106-126 residues of the human prion protein: a CD and NMR spectroscopic study (123 visite)
Org Biomol Chem (ISSN: 1477-0520, 1477-0539, 1477-0539electronic), 2005 Feb 7; 3(3): 490-497.
Impact Factor: 2.547
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Bonomo RP, Cucinotta V, Giuffrida A, Impellizzeri G, Magrì A, Pappalardo G, Rizzarelli E, Santoro AM, Tabbì G, Vagliasindi LI
* A re-investigation of copper coordination in the octa-repeats region of the prion protein (118 visite)
Dalton Trans (ISSN: 1477-9226, 1477-9234, 1477-9234electronic), 2005 Jan 7; (1): 150-158.
Impact Factor: 3.003
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Langella E, Improta R, Barone V
* Checking the pH-induced conformational transition of prion protein by molecular dynamics simulations: Effect of protonation of histidine residues (143 visite)
Biophysical Journal (ISSN: 0006-3495, 1542-0086), 2004 Dec; 87(6): 3623-3632.
Impact Factor: 4.585
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Pappalardo M, Milardi D, La Rosa C, Zannoni C, Rizzarelli E, Grasso D
* A molecular dynamics study on the conformational stability of PrP 180-193 helix II prion fragment (129 visite)
Chemical Physics Letters (ISSN: 0009-2614), 2004 Jun 1; 390(4-6): 511-516.
Impact Factor: 2.438
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Grasso D, Milardi D, La Rosa C, Rizzarelli E
* The different role of Cu++ and Zn++ ions in affecting the interaction of prion peptide PrP106-126 with model membranes (100 visite)
Chem Commun (ISSN: 1359-7345, 1364-548x, 1364-548xelectronic), 2004 Jan 21; 10(2): 246-247.
Impact Factor: 3.997
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Bonomo RP, Castronovo BM, Santoro AM
* A Spectroscopic Investigation Of The Interaction Between Nitrogen Monoxide And Copper Sites Of The Fungal Laccase From Rigidoporus Lignosus (75 visite)
Dalton Trans, 2004 Jan 7; N/D: 104-112.
Impact Factor: 4.097
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Brown DR, Guantieri V, Grasso G, Impellizzeri G, Pappalardo G, Rizzarelli E
* Copper(II) complexes of peptide fragments of the prion protein. Conformation changes induced by copper(II) and the binding motif in C-terminal protein region (134 visite)
J Chem Res (ISSN: 0162-0134, 1873-3344, 0162-0134print), 2004 Jan; 98(1): 133-143.
Impact Factor: 2.225
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Barone V, Improta R, Rega N
* Computation of protein pK's values by an integrated density functional theory/Polarizable Continuum Model approach (104 visite)
Theor Chem Acc (ISSN: 1432-881x), 2004; 111(2-6): 237-245.
Impact Factor: 2.209
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Tizzano B, Marasco D, Benedetti E, De Capua A, Palladino P, Pedone C, Perretta G, Rossi F, Ragone R, Ruvo M
* Conformational conversion of prion proteins: Role synthetic PRP 173-195 fibrillogenic peptide (115 visite)
Peptide Revolution, 2004; N/D: N/D-N/D.
Impact Factor: 4.659
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Pappalardo G, Impellizzeri G, Campagna T
* Copper(II) binding of prion protein's octarepeat model peptides (156 visite)
Inorg Chim Acta (ISSN: 0020-1693), 2004; 357(1): 185-194.
Impact Factor: 1.554
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La Mendola D, Bonomo R, Maccarrone G, Pappalardo G, Rizzarelli E
* A thermodynamic and spectroscopic study on the copper(II) complexes with hexarepeats fragments of the avian prion protein (133 visite)
J Chem Res (ISSN: 0162-0134, 1873-3344, 0162-0134print), 2003 Jul 15; 96(1): N/D-N/D.
Impact Factor: 2.343
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Bonomo RP, Grasso D, Grasso G, Guantieri V, Impellizzeri G, La Rosa C, Milardi D, Pappalardo G, Tabbì G, Rizzarelli E
* Metal binding to prion protein (123 visite)
Metal-Ligand Interactions - Molecular Nano- Micro- And Macro-Systems In Complex Environments, 2003 Jan 01; 116: 21-39.
Impact Factor: 5.664
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Grasso D, Milardi D, Guantieri V, La Rosa C, Rizzarelli E
* Interaction of prion peptide PrP 180-193 with DPPC model membranes: A thermodynamic study (128 visite)
New J Chem (ISSN: 1144-0546), 2003; 27(2): 359-364.
Impact Factor: 2.272
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Menziani MC, De Benedetti PG, Langella E, Barone V
* Seeking for binding determinants of the prion protein to human plasminogen (92 visite)
Mol Phys (ISSN: 0026-8976), 2003; 101(17): 2763-2773.
Impact Factor: 1.591
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Grasso D, Milardi D, La Rosa C, Rizzarelli E
* DSC study of the interaction of the prion peptide PrP106-126 with artificial membranes (120 visite)
New J Chem (ISSN: 1144-0546), 2001; 25(12): 1543-1548.
Impact Factor: 2.44
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Bonomo RP, Imperllizzeri G, Pappalardo G, Rizzarelli E, Tabbì G
Copper(II) binding modes in the prion octapeptide PHGGGWGQ: A spectroscopic and voltammetric study (178 visite)
Chemistry (ISSN: 0947-6539, 1521-3765, 1521-3765electronic), 2000 Nov 17; 6(22): 4195-4202.
Impact Factor: 4.698
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Campagna T, Grasso G, Rizzarelli E, Vecchio G
L- and D-cysteine derivatives of β-cyclodextrin: Different molecular recognition properties of their copper(II) complexes for amino acids (122 visite)
Inorg Chim Acta (ISSN: 0020-1693), 1998; 275-276: 395-400.
Impact Factor: 1.454
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Marletta F, Rizzarelli E, Mangiameli A, Brogna A, Sammartano S, Monaco S, Blasi A
Effects of graded doses of copper complexes of L-aminoacids on gastric acid secretion in rats (99 visite)
Boll Soc Ital Biol Sper (ISSN: 0037-8771), 1979 Apr 30; 55(8): 769-775.
Impact Factor: 0
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75 Records (69 escludendo Abstract e Conferenze).
Impact factor totale: 261.739 (241.834 escludendo Abstract e Conferenze).
Impact factor a 5 anni totale: 273.783 (252.499 escludendo Abstract e Conferenze).







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