About: Sigel Helmut

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Attributs	Valeurs
type	Person
name	Sigel Helmut
familyName	Sigel
Given name	H. Helmut
is relates of	http://hub.abes.fr/acs/periodical/jacsat/1969/volume_91/issue_5/101021ja01033a005/authorship/3 http://hub.abes.fr/acs/periodical/inocaj/1979/volume_18/issue_5/101021ic50195a040/authorship/1 http://hub.abes.fr/acs/periodical/jacsat/1992/volume_114/issue_20/101021ja00046a025/authorship/4 http://hub.abes.fr/acs/periodical/jacsat/1994/volume_116/issue_7/101021ja00086a028/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1990/volume_29/issue_19/101021ic00344a001/authorship/2 http://hub.abes.fr/acs/periodical/chreay/1982/volume_82/issue_4/101021cr00050a003/authorship/1 http://hub.abes.fr/acs/periodical/jacsat/1969/volume_91/issue_5/101021ja01033a004/authorship/1 http://hub.abes.fr/acs/periodical/jacsat/1977/volume_99/issue_9/101021ja00451a046/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/1973/volume_12/issue_5/101021ic50123a047/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1986/volume_25/issue_9/101021ic00229a004/authorship/3 http://hub.abes.fr/acs/periodical/jacsat/1971/volume_93/issue_8/101021ja00737a032/authorship/1 http://hub.abes.fr/acs/periodical/bichaw/1970/volume_9/issue_17/101021bi00819a001/authorship/3 http://hub.abes.fr/acs/periodical/inocaj/1987/volume_26/issue_13/101021ic00260a028/authorship/1 http://hub.abes.fr/acs/periodical/jacsat/1983/volume_105/issue_10/101021ja00348a013/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/1979/volume_18/issue_12/101021ic50202a011/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1992/volume_31/issue_26/101021ic00052a039/authorship/4 http://hub.abes.fr/acs/periodical/inocaj/1993/volume_32/issue_23/101021ic00075a068/authorship/4 http://hub.abes.fr/acs/periodical/inocaj/1971/volume_10/issue_10/101021ic50104a028/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/1980/volume_19/issue_5/101021ic50207a069/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1988/volume_27/issue_16/101021ic00289a027/authorship/3 http://hub.abes.fr/acs/periodical/jacsat/1982/volume_104/issue_15/101021ja00379a010/authorship/2 http://hub.abes.fr/acs/periodical/jacsat/1980/volume_102/issue_9/101021ja00529a021/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/2000/volume_39/issue_26/101021ic0007207/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/2001/volume_40/issue_11/101021ic0009775/authorship/4 http://hub.abes.fr/acs/periodical/inocaj/2003/volume_42/issue_11/101021ic020672l/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/2005/volume_44/issue_14/101021ic050341j/authorship/5 http://hub.abes.fr/acs/periodical/inocaj/2008/volume_47/issue_7/101021ic701976v/authorship/3 http://hub.abes.fr/acs/periodical/inocaj/2000/volume_39/issue_6/101021ic9905087/authorship/4 http://hub.abes.fr/acs/periodical/inocaj/2003/volume_42/issue_1/101021ic020535o/authorship/7 http://hub.abes.fr/acs/periodical/bichaw/1969/volume_8/issue_7/101021bi00835a001/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1989/volume_28/issue_8/101021ic00307a013/authorship/4 http://hub.abes.fr/acs/periodical/jacsat/1975/volume_97/issue_11/101021ja00844a048/authorship/1 http://hub.abes.fr/acs/periodical/jacsat/1969/volume_91/issue_27/101021ja50001a048/authorship/3 http://hub.abes.fr/acs/periodical/jacsat/1976/volume_98/issue_3/101021ja00419a015/authorship/1 http://hub.abes.fr/acs/periodical/jacsat/1985/volume_107/issue_18/101021ja00304a018/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1971/volume_10/issue_5/101021ic50099a018/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1984/volume_23/issue_13/101021ic00181a028/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1984/volume_23/issue_23/101021ic00191a024/authorship/5 http://hub.abes.fr/acs/periodical/jacsat/1974/volume_96/issue_9/101021ja00816a016/authorship/2 http://hub.abes.fr/acs/periodical/jacsat/1972/volume_94/issue_23/101021ja00778a017/authorship/3 http://hub.abes.fr/acs/periodical/inocaj/1983/volume_22/issue_6/101021ic00148a017/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1988/volume_27/issue_8/101021ic00281a030/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/1971/volume_10/issue_10/101021ic50104a027/authorship/1 http://hub.abes.fr/acs/periodical/inocaj/1985/volume_24/issue_13/101021ic00207a022/authorship/5 http://hub.abes.fr/acs/periodical/jacsat/1977/volume_99/issue_13/101021ja00455a047/authorship/1 http://hub.abes.fr/acs/periodical/achre4/1970/volume_3/issue_6/101021ar50030a004/authorship/1 http://hub.abes.fr/acs/periodical/jacsat/1981/volume_103/issue_2/101021ja00392a001/authorship/5 http://hub.abes.fr/acs/periodical/inocaj/1987/volume_26/issue_5/101021ic00252a003/authorship/3 http://hub.abes.fr/acs/periodical/jacsat/1978/volume_100/issue_5/101021ja00473a039/authorship/2 http://hub.abes.fr/acs/periodical/jacsat/1985/volume_107/issue_11/101021ja00297a042/authorship/4 http://hub.abes.fr/acs/periodical/jacsat/1976/volume_98/issue_23/101021ja00439a047/authorship/1 http://hub.abes.fr/acs/periodical/jacsat/1983/volume_105/issue_18/101021ja00356a029/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/1979/volume_18/issue_2/101021ic50192a047/authorship/2 http://hub.abes.fr/acs/periodical/inocaj/1986/volume_25/issue_15/101021ic00235a028/authorship/2 http://hub.abes.fr/acs/periodical/jacsat/1984/volume_106/issue_25/101021ja00337a050/authorship/1 http://hub.abes.fr/springer/periodical/775/1996/volume_1/issue_3/B92A1D5D21ED6F61E053120B220A5EA3/authorship/8 http://hub.abes.fr/acs/periodical/inocaj/1970/volume_9/issue_5/101021ic50087a045/authorship/2
is Author of	Ternary complexes of solution. 48. Influence of organic solvents on intramolecular aromatic-ring stacks in aqueous mixed-ligand metal ion complexes. Opposing solvent effects Ternary complexes in solution. 35. Intramolecular hydrophobic ligand-ligand interactions in mixed ligand complexes containing an aliphatic amino acid Hydrolysis of nucleoside phosphates. 8. General considerations of transphosphorylations: mechanism of the metal ion facilitated dephosphorylation of nucleoside 5'-triphosphates including promotion of ATP dephosphorylation by addition of adenosine 5'-monophosphate Solvent dependent metal ion-nucleic base recognition. Extent of macrochelate formation in the binary copper(II) complexes of adenosine 5'-monophosphate (AMP) and adenosine 5'-triphosphate (ATP) in water-dioxane mixtures A proton nuclear magnetic resonance study of purine and pyrimidine nucleoside 5'-diphosphates. Extent of macrochelate formation in monomeric metal ion complexes and promotion of self-stacking by metal ions Metal Ions and Hydrogen Peroxide. Evidence for a Catalase-Like Activity of the cis-Diaquo Isomer of the Cu2+-2,2'-Bipyridyl 1:2 Complex Ternary complexes in solution. XXIV. Metal ion bridging of stacked purine-indole adducts. The mixed-ligand complexes of adenosine 5'-triphosphate, tryptophan, and manganese(II), copper(II), or zinc(II) Comparison of the Extent of Macrochelate Formation in Complexes of Divalent Metal Ions with Guanosine (GMP2-), Inosine (IMP2-), and Adenosine 5'-Monophosphate (AMP2-). The Crucial Role of N-7 Basicity in Metal Ion-Nucleic Base Recognition Complex formation between copper(2+) and 1,N6-ethenoadenosine 5'-triphosphate (.epsilon.-ATP) Ternary complexes in solution. 28. Enhanced stability of ternary metal ion/adenosine 5'-triphosphate complexes. Cooperative effects caused by stacking interactions in complexes containing adenosine triphosphate, phenanthroline, and magnesium, calcium, or zinc ions Thermodynamics and kinetics of complex formation between cobalt(II), nickel(II), and copper(II) with glycyl-L-leucine and L-leucylglycine Coordinating properties of the amide bond. Stability and structure of metal ion complexes of peptides and related ligands Comparison of the stabilities of monomeric metal ion complexes formed with adenosine 5'-triphosphate (ATP) and pyrimidine-nucleoside 5'-triphosphate (CTP, UTP, TTP) and evaluation of the isomeric equilibria in the complexes of ATP and CTP Ambivalent metal ion binding properties of cytidine in aqueous solution Solvent-dependent metal ion-adenine recognition. Quantification of the intramolecular equilibria between various isomers of the copper(2+) complexes formed in water-dioxane mixtures with the anions of the antiviral 9-(2-(phosphonomethoxy)ethyl)adenine (PMEA), an adenosine monophosphate (AMP) analog Metal ion coordinating properties of pyrimidine-nucleoside 5'-monophosphates (CMP, UMP, TMP) and of simple phosphate monoesters, including D-ribose 5'-monophosphate. Establishment of relations between complex stability and phosphate basicity Structure of the copper(II)-L-histidine 1:2 complex in solution Ternary complexes in solution. 41. Ternary complexes in solution as models for enzyme-metal ion-substrate complexes. Comparison of the coordination tendency of imidazole and ammonia toward the binary complexes of Mn(II), Co(II), Ni(II), Cu(II), Zn(II), or Cd(II) and uridine 5'-triphosphate or adenosine 5'-triphosphate Discriminating behavior of metal ions and ligands with regard to their biological significance Stability and structure of binary and ternary metal ion complexes with biocytin, the sulfoxide and sulfone, N-acetyl-L-lysine, and L-alanine Ternary complexes in solution. 34. Discriminating and stability increasing properties of the imidazole moiety in mixed-ligand complexes Ternary complexes in solution. 50. Dependence of intramolecular hydrophobic ligand-ligand interactions on ligand structure, geometry of the coordination sphere of the metal ion, and solvent composition. Opposing solvent effects Hydrolysis of nucleoside phosphates. 9. Comparison of the effectiveness of various metal ions on the promoted dephosphorylation of adenosine 5'-triphosphate (ATP) and uridine 5'-triphosphate (UTP) Hydrolysis of nucleoside phosphates. Part 10. Comparison of the metal ion facilitated hydrolysis for the 5'-triphosphates of 1,N6-ethenoadenosine (.epsilon.-ATP), adenosine (ATP), and cytidine (CTP). Dephosphorylation of .epsilon.-ATP proceeding with zinc(2+) and copper(2+) via structurally different species: evidence for a long-sought, monomeric, back-bound complex with copper(2+)/.epsilon.-ATP Stability and structure for monomeric cadmium(II) and zinc(II) complexes of the 5'-triphosphates of adenosine and cytidine in aqueous solution: isomeric equilibria in binary and ternary complexes Ternary complexes in solution. 44. Dependence of an intramolecular aromatic-ring stacking interaction in mixed-ligand copper(II) complexes in aqueous solution on the distance of the stacking moiety from the coordinating group and the solid-state structure of the ternary copper(II)-1,10-phenanthroline-phenylpropionate complex Hydrolysis of nucleoside phosphates. 6. The mechanism of the metal ion promoted dephosphorylation of purine nucleoside 5'-triphosphates Ternary complexes in solution. XV. Mixed-ligand copper(II) complexes with 2,2'-bipyridyl or 1,10-phenanthroline and pyrocatecholate or derivatives thereof Metal ions and hydrogen peroxide. XX. On the kinetics and mechanism of the decomposition of hydrogen peroxide, catalyzed by the Cu2+-2,2'-bipyridyl complex Metal ions and hydrogen peroxide. XXI. On the kinetics and mechanism of the reactions of hydrogen peroxide with hydrazine or hydroxylamine, catalyzed by Cu2+ and by the Cu2+-2,2'-bipyridyl complex Ternary complexes in solution. 27. Biological implications from the stability of ternary complexes in solution. Mixed-ligand complexes with manganese(II) and other 3d ions Metal ion binding properties of dihydroxyacetone phosphate and glycerol 1-phosphate Stability of metal ion/alkyl thioether complexes in solution. Ligating properties of "isolated" sulfur atoms Acid−Base and Metal-Ion-Binding Properties of9-[2-(2-Phosphonoethoxy)ethyl]adenine (PEEA), a Relative of theAntiviral Nucleotide Analogue 9-[2-(Phosphonomethoxy)ethyl]adenine(PMEA). An Exercise on the Quantification of Isomeric ComplexEquilibria in Solution Metal Ion-Binding Properties of 1-Methyl-4-aminobenzimidazole(=9-Methyl-1,3-dideazaadenine) and 1,4-Dimethylbenzimidazole(=6,9-Dimethyl-1,3-dideazapurine). Quantification of the Steric Effect of the 6-AminoGroup on Metal Ion Binding at the N7 Site of the Adenine Residue Inosylyl(3′→5′)inosine (IpI-). Acid-Base and Metal Ion-Binding Properties of a Dinucleoside Monophosphate in Aqueous Solution Isomeric Equilibria in Aqueous Solution Involving Aromatic Ring Stacking in theSexternary Complexes Formed by the Quaternarycis-(NH3)2Pt(2‘-deoxyguanosine-N7)(dGMP-N7) Complex and the BinaryCu(2,2‘-bipyridine)2+ or Cu(1,10-phenanthroline)2+ Complexes(dGMP2- = 2‘-Deoxyguanosine 5‘-monophosphate) Intrinsic Acid−Base Properties of Purine Derivatives in AqueousSolution and Comparison of the Acidifying Effects of Platinum(II)Coordinated to N1 or N7: Acidifying Effects Are Reciprocal and theProton “Outruns” Divalent Metal Ions

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