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Ioannis Gerothanassis

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Vassiliki G Kontogianni; Charalambos G Pappas; Alexandra Primikyri; Andreas G Tzakos; Pantelis Charisiadis; Vassiliki Exarchou; Ioannis P Gerothanassis
Hydrogen bonding probes of phenol -OH groups.
Catherine G Vasilopoulou; Alexandra A Nerantzaki; Andreas G Tzakos; Ioannis P Gerothanassis; Gregoris Iatrou; Vassiliki G Kontogianni; Fotini N Lamari; Zacharoula I Linardaki; Marigoula Margarity
Phytochemical composition of "mountain tea" from Sideritis clandestina subsp. clandestina and evaluation of its behavioral and oxidant/antioxidant effects on adult mice.
Vassiliki G Kontogianni; Alexandra A Nerantzaki; Ivana Nikolic; Nisar Sayyad; Ivana Stojanovic; Stanislava Stosic-Grujicic; Goran Tomic; Ioannis P Gerothanassis; Andreas G Tzakos
Phytochemical profile of Rosmarinus officinalis and Salvia officinalis extracts and correlation to their antioxidant and anti-proliferative activity.

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All Publications

2013: Vassiliki G Kontogianni; Charalambos G Pappas; Alexandra Primikyri; Andreas G Tzakos; Pantelis Charisiadis; Vassiliki Exarchou; Ioannis P Gerothanassis
Hydrogen bonding probes of phenol -OH groups.
Organic & biomolecular chemistry 2013;11(6):1013-25.
2013: Catherine G Vasilopoulou; Alexandra A Nerantzaki; Andreas G Tzakos; Ioannis P Gerothanassis; Gregoris Iatrou; Vassiliki G Kontogianni; Fotini N Lamari; Zacharoula I Linardaki; Marigoula Margarity
Phytochemical composition of "mountain tea" from Sideritis clandestina subsp. clandestina and evaluation of its behavioral and oxidant/antioxidant effects on adult mice.
European journal of nutrition 2013;52(1):107-16.
2013: Vassiliki G Kontogianni; Alexandra A Nerantzaki; Ivana Nikolic; Nisar Sayyad; Ivana Stojanovic; Stanislava Stosic-Grujicic; Goran Tomic; Ioannis P Gerothanassis; Andreas G Tzakos
Phytochemical profile of Rosmarinus officinalis and Salvia officinalis extracts and correlation to their antioxidant and anti-proliferative activity.
Food chemistry 2013;136(1):120-9.
2012: Pantelis Charisiadis; Vassiliki Exarchou; Constantinos G Tsiafoulis; Andreas G Tzakos; Ioannis P Gerothanassis
Rapid and direct low micromolar NMR method for the simultaneous detection of hydrogen peroxide and phenolics in plant extracts.
Journal of agricultural and food chemistry 2012;60(18):4508-13.
2012: Malini Nagulapalli; Giacomo Parigi; Jing Yuan; M Madan Babu; Vladimir V Bamm; Maurits R R de Planque; George Deraos; Ioannis P Gerothanassis; Joerg Gsponer; George Harauz; Claudio Luchinat; John Matsoukas; Andreas G Tzakos
Recognition pliability is coupled to structural heterogeneity: a calmodulin intrinsically disordered binding region complex.
Structure (London, England : 1993) 2012;20(3):522-33.
2012: Eleni Kyriakou; Alexandra Primikyri; Haralambos Stamatis; Pantelis Charisiadis; Ioannis P Gerothanassis; Maria Katsoura; Andreas G Tzakos
Unexpected enzyme-catalyzed regioselective acylation of flavonoid aglycones and rapid product screening.
Organic & biomolecular chemistry 2012;10(9):1739-42.
2012: Charalampos G Pappas; Andreas G Tzakos; Ioannis P Gerothanassis
On the hydration state of amino acids and their derivatives at different ionization States: a comparative multinuclear NMR and crystallographic investigation.
Journal of amino acids 2012;2012():565404.
2011: Pantelis Charisiadis; Vassiliki Exarchou; Alexandra Primikyri; Andreas G Tzakos; Ioannis P Gerothanassis
Unprecedented ultra-high-resolution hydroxy group (1)H NMR spectroscopic analysis of plant extracts.
Journal of natural products 2011;74(11):2462-6.
2011: A A Nerantzaki; Constantinos G Tsiafoulis; Pantelis Charisiadis; V G Kontogianni; Ioannis P Gerothanassis
Novel determination of the total phenolic content in crude plant extracts by the use of 1H NMR of the -OH spectral region.
Analytica chimica acta 2011;688(1):54-60.
2011: Constantinos G Tsiafoulis; Vassiliki Exarchou; Polyxeni P Tziova; Eleni Bairaktari; Ioannis P Gerothanassis; Anastassios N Troganis
A new method for the determination of free L-carnitine in serum samples based on high field single quantum coherence filtering 1H-NMR spectroscopy.
Analytical and bioanalytical chemistry 2011;399(6):2285-94.
2010: Ioannis P Gerothanassis
Oxygen-17 NMR spectroscopy: basic principles and applications. Part II.
Progress in nuclear magnetic resonance spectroscopy 2010;57(1):1-110.
2010: Pantelis Charisiadis; Vasilliki Exarchou; Anastassios N Troganis; Ioannis P Gerothanassis
Exploring the "forgotten"-OH NMR spectral region in natural products.
Chemical communications (Cambridge, England) 2010;46(20):3589-91.
2010: Vlassios Goulas; Vassiliki T Papoti; Vassiliki Exarchou; Maria Z Tsimidou; Ioannis P Gerothanassis
Contribution of flavonoids to the overall radical scavenging activity of olive (Olea europaea L.) leaf polar extracts.
Journal of agricultural and food chemistry 2010;58(6):3303-8.
2010: Ioannis P Gerothanassis
Oxygen-17 NMR spectroscopy: basic principles and applications (part I).
Progress in nuclear magnetic resonance spectroscopy 2010;56(2):95-197.
2009: Vlassios Goulas; Vassiliki Exarchou; Anastassios N Troganis; Eleni Psomiadou; Theodore Fotsis; Evangelos Briasoulis; Ioannis P Gerothanassis
Phytochemicals in olive-leaf extracts and their antiproliferative activity against cancer and endothelial cells.
Molecular nutrition & food research 2009;53(5):600-8.
2009: Vassiliki G Kontogianni; Vassiliki Exarchou; Anastassios N Troganis; Ioannis P Gerothanassis
Rapid and novel discrimination and quantification of oleanolic and ursolic acids in complex plant extracts using two-dimensional nuclear magnetic resonance spectroscopy-Comparison with HPLC methods.
Analytica chimica acta 2009;635(2):188-95.
2008: Evangelos C Tatsis; Vassiliki Exarchou; Anastassios N Troganis; Ioannis P Gerothanassis
1H NMR determination of hypericin and pseudohypericin in complex natural mixtures by the use of strongly deshielded OH groups.
Analytica chimica acta 2008;607(2):219-26.
2007: Lucia Banci; Ivano Bertini; Simone Ciofi-Baffoni; Ioannis P Gerothanassis; Iliana Leontari; Manuele Martinelli; Shenlin Wang
A structural characterization of human SCO2.
Structure (London, England : 1993) 2007;15(9):1132-40.
2007: Evangelos C Tatsis; Sjef Boeren; Vassiliki Exarchou; Anastassios N Troganis; Jacques Vervoort; Ioannis P Gerothanassis
Identification of the major constituents of Hypericum perforatum by LC/SPE/NMR and/or LC/MS.
Phytochemistry 2007;68(3):383-93.
2006: Andreas G Tzakos; Nawazish Naqvi; Konstantinos Comporozos; Roberta Pierattelli; Vassiliki Theodorou; Ahsan Husain; Ioannis P Gerothanassis
The molecular basis for the selection of captopril cis and trans conformations by angiotensin I converting enzyme.
Bioorganic & medicinal chemistry letters 2006;16(19):5084-7.
2005: Anastassios N Troganis; Emilia Sicilia; Klimentini Barbarossou; Ioannis P Gerothanassis; Nino Russo
Solvation properties of N-substituted cis and trans amides are not identical: significant enthalpy and entropy changes are revealed by the use of variable temperature 1H NMR in aqueous and chloroform solutions and ab initio calculations.
The journal of physical chemistry. A 2005;109(51):11878-84.
2005: Vassiliki Exarchou; Manfred Krucker; Teris A van Beek; Jacques Vervoort; Ioannis P Gerothanassis; Klaus Albert
LC-NMR coupling technology: recent advancements and applications in natural products analysis.
Magnetic resonance in chemistry : MRC 2005;43(9):681-7.
2005: Andreas G Tzakos; Ioannis P Gerothanassis
Domain-selective ligand-binding modes and atomic level pharmacophore refinement in angiotensin I converting enzyme (ACE) inhibitors.
Chembiochem : a European journal of chemical biology 2005;6(6):1089-103.
2005: Andreas G Tzakos; Anastassios N Troganis; Vassiliki Theodorou; Theodore Tselios; Christos Svarnas; John Matsoukas; Vasso Apostolopoulos; Ioannis P Gerothanassis
Structure and function of the myelin proteins: current status and perspectives in relation to multiple sclerosis.
Current medicinal chemistry 2005;12(13):1569-87.
2004: Andreas G Tzakos; Patrick Fuchs; Nico A J van Nuland; Anastassios N Troganis; Theodore Tselios; Spyros Deraos; John Matsoukas; Ioannis P Gerothanassis; Alexandre Bonvin
NMR and molecular dynamics studies of an autoimmune myelin basic protein peptide and its antagonist: structural implications for the MHC II (I-Au)-peptide complex from docking calculations.
European journal of biochemistry / FEBS 2004;271(16):3399-413.
2004: Andreas G Tzakos; Ioannis P Gerothanassis; Anastassios N Troganis
On the structural basis of the hypertensive properties of angiotensin II: a solved mystery or a controversial issue?
Current topics in medicinal chemistry 2004;4(4):431-44.
2003: Andreas G Tzakos; Athanassios S Galanis; Georgios A A. Spyroulias; Paul Cordopatis; Evy Manessi-Zoupa; Ioannis P Gerothanassis
Structure-function discrimination of the N- and C- catalytic domains of human angiotensin-converting enzyme: implications for Cl- activation and peptide hydrolysis mechanisms.
Protein engineering 2003;16(12):993-1003.
2003: Vassiliki Exarchou; Markus Godejohann; Teris A van Beek; Ioannis P Gerothanassis; Jacques Vervoort
LC-UV-solid-phase extraction-NMR-MS combined with a cryogenic flow probe and its application to the identification of compounds present in Greek oregano.
Analytical chemistry 2003;75(22):6288-94.
2003: Anastassios N Troganis; Constantinos Tsanaktsidis; Ioannis P Gerothanassis
14N NMR relaxation times of several protein amino acids in aqueous solution--comparison with 17O NMR data and estimation of the relative hydration numbers in the cationic and zwitterionic forms.
Journal of magnetic resonance (San Diego, Calif. : 1997) 2003;164(2):294-303.
2003: Athanassios S Galanis; Georgios A A. Spyroulias; Roberta Pierattelli; Andreas G Tzakos; Anastassios N Troganis; Ioannis P Gerothanassis; George Pairas; Evy Manessi-Zoupa; Paul Cordopatis
Zinc binding in peptide models of angiotensin-I converting enzyme active sites studied through 1H-NMR and chemical shift perturbation mapping.
Biopolymers 2003;69(2):244-52.
2003: Georgios A A. Spyroulias; Panagiota Nikolakopoulou; Andreas G Tzakos; Ioannis P Gerothanassis; Vassiliki Magafa; Evy Manessi-Zoupa; Paul Cordopatis
Comparison of the solution structures of angiotensin I & II. Implication for structure-function relationship.
European journal of biochemistry / FEBS 2003;270(10):2163-73.
2003: Andreas G Tzakos; Alexandre Bonvin; Anastassios N Troganis; Paul Cordopatis; Mario Amzel; Ioannis P Gerothanassis; Nico A J van Nuland
On the molecular basis of the recognition of angiotensin II (AII). NMR structure of AII in solution compared with the X-ray structure of AII bound to the mAb Fab131.
European journal of biochemistry / FEBS 2003;270(5):849-60.
2002: Vassiliki Exarchou; Nikolaos Nenadis; Maria Z Tsimidou; Ioannis P Gerothanassis; Anastassios N Troganis; Dimitrios Boskou
Antioxidant activities and phenolic composition of extracts from Greek oregano, Greek sage, and summer savory.
Journal of agricultural and food chemistry 2002;50(19):5294-9.
2001: Ioannis P Gerothanassis
The (17)O-NMR shielding range and shielding time scale and detection of discrete hydrogen-bonded conformational states in peptides.
Biopolymers 2001;59(3):125-30.
2001: K Barbarossou; A E Aliev; Ioannis P Gerothanassis; Jane Anastassopoulou; Theophilos Theophanides
Natural abundance (15)N CP MAS NMR as a novel tool for investigating metal binding to nucleotides in the solid state.
Inorganic chemistry 2001;40(14):3626-8.
2001: Vassiliki Exarchou; Anastassios N Troganis; Ioannis P Gerothanassis; Maria Z Tsimidou; Dimitrios Boskou
Identification and quantification of caffeic and rosmarinic acid in complex plant extracts by the use of variable-temperature two-dimensional nuclear magnetic resonance spectroscopy.
Journal of agricultural and food chemistry 2001;49(1):2-8.
2000: Theodore Tselios; Ioanna Daliani; Spyros Deraos; Sotiria Thymianou; E Matsoukas; Anastassios N Troganis; Ioannis P Gerothanassis; Athanasia Mouzaki; Thomas Mavromoustakos; Lesley Probert; John Matsoukas
Treatment of experimental allergic encephalomyelitis (EAE) by a rationally designed cyclic analogue of myelin basic protein (MBP) epitope 72-85.
Bioorganic & medicinal chemistry letters 2000;10(24):2713-7.
2000: CG Kalodimos; Ioannis P Gerothanassis; Roberta Pierattelli; Anastassios N Troganis
Multinuclear (13C, 17O, 57Fe) NMR studies of carbonmonoxy heme proteins and synthetic model compounds.
Journal of inorganic biochemistry 2000;79(1-4):371-80.
2000: Anastassios N Troganis; Ioannis P Gerothanassis; Z Athanassiou; T Mavromoustakos; GE Hawkes; Constantinos Sakarellos
Thermodynamic origin of cis/trans isomers of a proline-containing beta-turn model dipeptide in aqueous solution: a combined variable temperature 1H-NMR, two-dimensional 1H,1H gradient enhanced nuclear Overhauser effect spectroscopy (NOESY), one-dimensional steady-state intermolecular 13C,1H NOE, and molecular dynamics study.
Biopolymers 2000;53(1):72-83.
1999: Theodore Tselios; Lesley Probert; Ioanna Daliani; E Matsoukas; Anastassios N Troganis; Ioannis P Gerothanassis; Thomas Mavromoustakos; Graham J Moore; John Matsoukas
Design and synthesis of a potent cyclic analogue of the myelin basic protein epitope MBP72-85: importance of the Ala81 carboxyl group and of a cyclic conformation for induction of experimental allergic encephalomyelitis.
Journal of medicinal chemistry 1999;42(7):1170-7.
1998: Ioannis P Gerothanassis; CG Kalodimos; GE Hawkes; P Haycock
The effects of atropisomerism and porphyrin deformation on 57Fe shieldings in superstructured hemoprotein models.
Journal of magnetic resonance (San Diego, Calif. : 1997) 1998;131(1):163-5.
1998: CG Kalodimos; Ioannis P Gerothanassis; GE Hawkes
13C- and 57Fe-NMR studies of the Fe-C-O unit of heme proteins and synthetic model compounds in solution: comparison with IR vibrational frequencies and X-ray structural data.
Biospectroscopy 1998;4(5 Suppl):S57-69.
1996: Ioannis P Gerothanassis; P J Barrie; Berry Birdsall; James Feeney
31P solid-state NMR measurements used to detect interactions between NADPH and water and to determine the ionisation state of NADPH in a protein-ligand complex subjected to low-level hydration.
European journal of biochemistry / FEBS 1996;235(1-2):262-6.
1995: P J Barrie; Ioannis P Gerothanassis; M Momenteau; G E Hawkes
Measuring the 13C NMR shielding tensor of 13CO bonded to haemoglobin.
Journal of magnetic resonance. Series B 1995;108(2):185-8.
1994: Ioannis P Gerothanassis; P J Barrie; Berry Birdsall; James Feeney
31P-NMR studies of NADPH, NADP+ and the complex of NADPH and methotrexate with Lactobacillus casei dihydrofolate reductase in the solid state.
European journal of biochemistry / FEBS 1994;226(1):211-8.
1992: Ioannis P Gerothanassis; N Birlirakis; T Karayannis; Maria Sakarellos-Daitsiotis; Constantinos Sakarellos; Bernard Vitoux; Michel Marraud
Hydration of the Gly2 and Gly3 peptide oxygens of [Leu5]-enkephalin in aqueous solution as revealed by the combined use of 17O-NMR and Fourier-transform infrared spectroscopy.
European journal of biochemistry / FEBS 1992;210(3):693-8.
1992: Ioannis P Gerothanassis; Berry Birdsall; C J Bauer; Thomas A Frenkiel; James Feeney
Nuclear magnetic resonance detection of bound water molecules in the active site of Lactobacillus casei dihydrofolate reductase in aqueous solution.
Journal of molecular biology 1992;226(2):549-54.
1992: Ioannis P Gerothanassis; N Birlirakis; T Karayannis; Vassilios Tsikaris; Maria Sakarellos-Daitsiotis; Constantinos Sakarellos; Bernard Vitoux; Michel Marraud
17O NMR and FT-IR study of the ionization state of peptides in aprotic solvents. Application to Leu-enkephalin.
FEBS letters 1992;298(2-3):188-90.
1992: Ioannis P Gerothanassis; Berry Birdsall; C J Bauer; James Feeney
31P-NMR assignment and conformational study of NADPH bound to Lactobacillus casei dihydrofolate reductase based on two-dimensional 1H-31P-heteronuclear and 1H-detected 1H-31P-shift-correlation experiments.
European journal of biochemistry / FEBS 1992;204(1):173-7.
1991: Ioannis P Gerothanassis; Berry Birdsall; James Feeney
Hydrogen bonding effects on 31P NMR shielding in the pyrophosphate group of NADPH bound to L. casei dihydrofolate reductase.
FEBS letters 1991;291(1):21-3.
1990: T Karayannis; Ioannis P Gerothanassis; Maria Sakarellos-Daitsiotis; Constantinos Sakarellos; Michel Marraud
17O- and 14N-NMR studies of Leu-enkephalin and enkephalin-related fragments in aqueous solution.
Biopolymers 1990;29(2):423-39.
1989: Constantinos Sakarellos; Ioannis P Gerothanassis; N Birlirakis; T Karayannis; Maria Sakarellos-Daitsiotis; Michel Marraud
17O-NMR studies of the conformational and dynamic properties of enkephalins in aqueous and organic solutions using selectively labeled analogues.
Biopolymers 1989;28(1):15-26.