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Items where contributor is "Sigel, Helmut"

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2016

Sigel, Astrid and Operschall, Bert P. and Matera-Wikiewicz, Agnieszka and Swiatek-Kozlowska, Jolanta and Sigel, Helmut. (2016) Acid–base and metal ion-binding properties of thiopyrimidine derivatives. Coordination Chemistry Review, 327-328. pp. 200-220.

Sigel, Astrid and Operschall, Bert P. and Griesser, Rolf and Song, Bin and Okruszek, Andrzej and Odani, Akira and Katsuta, Tsuguno and Lippert, Bernhard and Sigel, Helmut. (2016) (N7)-Platination and Its Effect on (N1) H-Acidification in Nucleoside Phosphate Derivates. Inorganica Chimica Acta, 452. pp. 137-151.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2016) The Alkali Metal Ions: Their Role for Life. Metal Ions in Life Sciences, 16. Cham, Switzerland.

2015

Lüth, M. S. and Freisinger, E. and Kampf, G. and Garijo Anorbe, M. and Griesser, R. and Operschall, B. P. and Sigel, H. and Lippert, B.. (2015) Connectivity patterns and rotamer states of nucleobases determine acid-base properties of metalated purine quartets. Journal of inorganic biochemistry, 148 (0162-0134). pp. 93-104.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2015) Sustaining Life on Planet Earth : Metalloenzymes Mastering Dioxygen and Other Chewy Gases. Metal ions in life sciences, 15. Cham.

Blindauer, C. A. and Sigel, A. and Operschall, B. P. and Griesser, R. and Holy, A. and Sigel, H.. (2015) Extent of Intramolecular π-Stacks in Aqueous Solution in Mixed-Ligand Copper(II) Complexes Formed by Heteroaromatic Amines and the Anticancer and Antivirally Active 9-[2-(Phosphonomethoxy)ethyl]guanine (PMEG). A Comparison with Related Acyclic Nucleotide Analogues. Polyhedron, 103, Part B. pp. 248-260.

Sigel, Helmut. (2015) Some Fragmentary Reflections about Professor Henryk Kozlowski and his Mentor Professor Boguslawa Jezowska-Trzebiatowska. Spotkajmy sie we Wroclawiu (Let's Meet in Wroclaw), 33. pp. 37-40.

2014

Gómez-Coca, R. B. and Sigel, A. and Operschall, B. P. and Holy´, A. and Sigel, H.. (2014) Solution Properties of Metal Ion Complexes Formed with the Antiviral and Cytostatic Nucleotide Analogue 9-[2-(Phosphonomethoxy)ethyl]-2-amino-6-dimethylaminopurine (PME2A6DMAP). Canadian journal of chemistry, Vol. 92, H. 8. S. 771-780.

Sigel, A. and Operschall, B. P. and Sigel, H.. (2014) Comparison of the π-Stacking Properties of Purine versus Pyrimidine Residues : Some Generalizations Regarding Selectivity. Journal of biological inorganic chemistry, Vol. 19, H. 4-5. S. 691-703.

Sigel, A. and Sigel, H.. (2014) Aromatic-ring Stacking between Indole and Nucleobase Residues. The Effect of Bridge Formation. Journal of biological inorganic chemistry, Vol. 19, H. S2. S. 818-819.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2014) The metal-driven biogeochemistry of gaseous compounds in the environment. Metal ions in life sciences, Vol. 14. Dordrecht.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2014) The metal-driven biogeochemistry of gaseous compounds in the environment. Metal ions in life sciences, Vol. 14. Dordrecht.

2013

Dominguez-Martin, A. and Johannsen, S. and Sigel, A. and Operschall, B. P. and Song, B. and Sigel, A. and Okruszek, A. and Gonzalez-Perez, J. M. and Niclos-Gutiérrez, J. and Sigel, R. K. O.. (2013) Intrinsic Acid-Base Properties of a Hexa-2’-deoxynucleoside Pentaphosphate, d(ApGpGpCpCpT) : Neighboring Effects and Isomeric Equilibria. Chemistry, a European journal, Vol. 19, H. 25. S. 8163-8181.

Blindauer, C. A. and Sigel, A. and Operschall, B. P. and Holy, A. and Sigel, H.. (2013) Extent of Intramolecular π-Stacks in Aqueous Solution in Mixed-Ligand CopperII) Complexes Formed by Heteroaromatic Amines and 1-[2-(Phosphonomethoxy)ethyl]cytosine (PMEC), a Relative of Antivirally Active Acyclic Nucleotide Analogues. Zeitschrift für anorganische und allgemeine Chemie, Bd. 639, H. 8-9. S. 1661-1673.

Sigel, R. K. O. and Skilandat, M. and Sigel, A. and Operschall, B. P. and Sigel, H.. (2013) Complex Formation of Cadmium with Sugar Residues, Nucleobases, Phosphates, Nucleotides, and Nucleic Acids. Metal ions in life sciences, Vol. 11. S. 191-274.

Sigel, R. K. O. and Sigel, H.. (2013) Metal Ion Interactions with Nucleic Acids and Their Constituents. Comprehensive inorganic chemistry II, Vol. 3. S. 623-660.

Sigel, A. and Sigel, H. and Sigel, R. K. O.. (2013) Interrelations between essential metal ions and human diseases. Metal Ions in Life Sciences, 13. Dordrecht.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2013) Cadmium : from toxicity to essentiality. Metal ions in life sciences, Vol. 11. Dordrecht.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2013) Metallomics and the cell. Metal ions in life sciences, Vol. 12. Dordrecht.

2012

Sigel, A. and Sigel, H. and Sigel, R. K. O., eds. (2012) Interplay between Metal Ions and Nucleic Acids. Metal Ions in Life Sciences, 10. Dordrecht.

Gómez-Coca, R. B. and Blindauer, C. A. and Sigel, A. and Operschall, B. P. and Holy´, A. and Sigel, H.. (2012) Extent of Intramolecular Pi-Stacks in Aqueous Solution in Mixed-Ligand Copper(II) Complexs Formed by Heteroaromatic Amines and Several 2-Aminopurine Derivatives of the Antivirally Active Nucleotide Analogue 9-[2-(Phosphonomethoxy)ethyl]adenine (PMEA). (Ternary Complexes in Solution. Part 71). Chemistry & biodiversity, Vol. 9, H. 9. S. 2008-2034.

Sigel, A. and Operschall, B. P. and Sigel, H.. (2012) Steric Guiding of Metal Ion Binding to a Purine Residue by a Non-Coordinating Amino Group: Examplified by 9-[(2-Phosphonomethoxy)ethyl]-2-aminopurine (PME2AP), an Isomer of the Antiviral Nucleotide Analogue 9-[(2-Phosphonomethoxy)ethyl]adenine (PMEA), and by Related Compounds. Coordination chemistry reviews, Vol. 256, H. 1-2. S. 260-278.

2011

Corfù, N. A. and Sigel, A. and Operschall, B. P. and Sigel, H.. (2011) Probing the Stacking Properties of Nucleosides and Nucleotides with Heteroaromatic Amines and the Effect of Metal Ion-Bridging on the Stability of the Stacks. Journal of the Indian Chemical Society, Vol. 88, H. 8. S. 1093-1115.

Kapinos, L. E. and Operschall, B. P. and Larsen, E. and Sigel, H.. (2011) Understanding the Acid-Base Properties of Adenosine : the Intrinsic Basicities of N1, N3 and N7. Chemistry: a European journal, Vol. 17, H. 29. S. 8156-8164.

Al-Sogair, F. M. and Operschall, B. P. and Sigel, A. and Sigel, H. and Schnabl, J. and Sigel, R. K. O.. (2011) Probing the Metal-Ion-Binding Strength of the Hydroxyl Group. Chemical reviews, Vol. 111, H. 8. S. 4964-5003.

Sigel, A. and Sigel, H.. (2011) Metals in the Brain. Chemical monthly, Vol. 142. S. 323-324.

Knobloch, B. and Mucha, A. and Operschall, B. P. and Sigel, H. and Jezowska-Bojczuk, M. and Kozlowski, H. and Sigel, R. K. O.. (2011) Stability and Structure of Mixed Ligand Metal Ion Complexes Containing Ni2+, Cu2+ or Zn2+, and Histamine as well as Adenosine 5'-Triphosphate (ATP4–) or Uridine 5'-Triphosphate (UTP4–) : an Intricate Network of Equilibria. Chemistry: a European journal, Vol. 17, H. 19. S. 5393-5403.

Sigel, A. and Sigel, H. and Sigel, R. K. O., eds. (2011) Metal ions in toxicology : effects, interactions, interdependencies. Metal ions in life sciences, Vol. 8. Cambridge.

Sigel, A. and Sigel, H. and Sigel, R. K. O., eds. (2011) Structural and catalytic roles of metal ions in RNA. Metal ions in life sciences, Vol. 9. Cambridge.

2010

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2010) Organometallics in environment and toxicology. Metal ions in life sciences, Vol. 7. Cambridge.

Fernández-Botello, F. and Operschall, B. P. and Holy, A. and Moreno, V. and Sigel, H.. (2010) Metal Ion-Binding Properties of 9-[(2-Phosphonomethoxy)ethyl]-2-aminopurine (PME2AP), an Isomer of the Antiviral Nucleotide Analogue 9-[(2-Phosphonometh¬oxy)ethyl]adenine (PMEA) : Steric Guiding of Metal Ion-Coordination by the Purine-Amino Group. Dalton transactions, Vol. 39, H. 27. S. 6344-6354.

Sigel, R. K. O. and H. Sigel, H.. (2010) A Stability Concept for Metal Ion Coordination to Single-Stranded Nucleic Acids and Affinities of Individual Sites. Accounts of chemical research, Vol. 43, H. 7. S. 974-984.

2009

Fernandez-Botello, Alfonso and Holy, Antonin and Moreno, Virtudes and Operschall, Bert P. and Sigel, Helmut. (2009) Intramolecular pi-pi stacking interactions in aqueous solution in mixed-ligand copper(II) complexes formed by heteroaromatic amines and the nucleotide analogue 9-[2-(phosphonomethoxy)ethyl]-2-aminopurine (PME2AP), an isomer of the antivirally active 9-[2-( phosphonomethoxy)ethyl]adenine (PMEA). Inorganica chimica acta, Vol. 362, H. 3. S. 799-810.

Operschall, Bert P. and Bianchi, Emanuela M. and Griesser, Rolf and Sigel, Helmut. (2009) Influence of decreasing solvent polarity (1,4-dioxane/water mixtures) on the stability and structure of complexes formed by copper(II), 2,2`-bipyridine or 1,10-phenanthroline and guanosine 5`-diphosphate : evaluation of isomeric equilibria. Journal of coordination chemistry, Vol. 62. S. 23-39.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2009) Metallothioneins and related chelators. Metal ions in life sciences, Vol. 5. Cambridge.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2009) Metal-carbon bonds in enzymes and cofactors. Metal ions in life sciences, Vol. 6. Cambridge.

Sigel, H. and Operschall, B. P. and Griesser, R.. (2009) Xanthosine 5'-monophosphate (XMP) : acid-base and metal ion-binding properties of a chameleon-like nucleotide. Chemical Society reviews, Vol. 38, H. 8. S. 2465-2494.

Operschall, B. P. and Bianchi, E. M. and Griesser, R. and Sigel, H.. (2009) Influence of a Decreasing Solvent Polarity on the Stability and Structure of Mixed-Ligand Complexes Formed by Copper(II), 2,2'-Bipyridine or 1,10-Phenanthroline and Guanosine 5'-Diphosphate. Journal of coordination chemistry, Vol. 62, H. 1. S. 23-39.

Sigel, Helmut and Operschall, Bert P. and Griesser, Rolf. (2009) Xanthosine 5′-monophosphate (XMP). Acid–base and metal ion-binding properties of a chameleon-like nucleotide. Chemical Society Reviews, 38 (8). pp. 2465-2494.

2008

Freisinger, Eva and Griesser, Rolf and Lippert, Bernhard and Moreno-Luque, Cristobal F. and Niclos-Gutierrez, Juan and Ochocki, Justyn and Operschall, Bert P. and Sigel, Helmut. (2008) Comparison of the surprising metal-ion-binding properties of 5-and 6-Uracilmethylphosphonate (5Umpa(2-) and 6Umpa(2-)) in aqueous solution and crystal structures of the Dimethyl and Di(isopropyl) esters of H-2(6Umpa). Chemistry, a European journal, Vol. 14, H. 32. S. 10036-10046.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2008) Biomineralization : from nature to application. Metal ions in life sciences, Vol. 4. Chichester.

Brasun, Justyna and Matera, Agnieszka and Sochacka, Elzbieta and Swiatek-Kozlowska, Jolanta and Kozlowski, Henryk and Operschall, Bert P. and Sigel, Helmut. (2008) Acid-base and metal ion binding properties of 2-thiocytidine in aqueous solution. Journal of biological inorganic chemistry, Vol. 13, H. 5. S. 663-674.

Knobloch, Bernd and Okruszek, Andrzej and Sigel, Helmut. (2008) Inosylyl(3'-< 5')inosine (Ipl⁻): Acid-base and metal ion-binding properties of a dinucleoside monophosphate in aqueous solution. Inorganic chemistry, Vol. 47, H. 7. S. 2641-2648.

2007

Odani, Akira and Kozlowski, Henryk and Swiatek-Kozlowska, Jolanta and Brasun, Justyna and Operschall, Bert P. and Sigel, Helmut. (2007) Extent of metal ion-sulfur binding in complexes of thiouracil nucleosides and nucleotides in aqueous solution. Journal of inorganic biochemistry, Vol. 101, H. 4. S. 727-735.

Knobloch, Bernd and Sigel, Helmut and Okruszek, Andrzej and Sigel, Roland K. O.. (2007) Metal-ion-coordinating properties of the dinucleotide 2 `-deoxyguanylyl(5 `-< 3 `)-2 `-deoxy-5 `-guanylate (d(pGpG)(3-)) : isomeric equilibria including macrochelated complexes relevant for nucleic acids. Chemistry, a European journal, Vol. 13, H. 6. S. 1804-1814.

Fernandez-Botello, Alfonso and Escuer, Albert and Solans, Xavier and Font-Bardia, Merce and Holy, Antonin and Sigel, Helmut and Moreno, Virtudes. (2007) New ternary complexes of copper(II) with 2,2 `-bipyridine (Bpy) and phosphocholine (PCh(-)) or the quaternary 1-(2-phosphonomethoxy)ethyl derivative of 2,4-diaminopyrimidine (PMEDAPy(-)). European journal of inorganic chemistry, 2007, H. 13. S. 1867-1873.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2007) The ubiquitous roles of cytochrome P450 proteins. Metal ions in life sciences, Vol. 3. Chichester.

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2007) Nickel and its surprising impact in nature. Metal ions in life sciences, Vol. 2. Chichester.

2006

Sigel, Astrid and Sigel, Helmut and Sigel, Roland K. O., eds. (2006) Neurodegenerative diseases and metal ions. Metal ions in life sciences, Vol. 1. Chichester : Hoboken.