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Unwinding of the C‐Terminal Residues of Neuropeptide Y is critical for Y2 Receptor Binding and Activation

30-Apr-2015 | Anette Kaiser, Paul Müller, Tristan Zellmann, Holger A. Scheidt, Lars Thomas, Mathias Bosse, Rene Meier, Jens Meiler ..., Angewandte Chemie International Edition, 2015

Abstract Despite recent breakthroughs in the structural characterization of G‐protein‐coupled receptors (GPCRs), there is only sparse data on how GPCRs recognize larger peptide ligands. NMR spectroscopy, molecular modeling, and double‐cycle mutagenesis studies were integrated to obtain a ...


Molecules, Vol. 20, Pages 7379-7395: Copper(I) Complexes of Mesoionic Carbene: Structural Characterization and Catalytic Hydrosilylation Reactions

22-Apr-2015 | Hohloch, Stephan ; Duecker, Fenja Leena; van der Meer, Margarethe ; Sarkar, Biprajit, Molecules, 2015

Two series of different Cu(I)-complexes of “click” derived mesoionic carbenes are reported. Halide complexes of the type (MIC)CuI (with MIC = 1,4-(2,6-diisopropyl)-phenyl-3-methyl-1,2,3-triazol-5-ylidene (for 1b), 1-benzyl-3-methyl-4-phenyl-1,2,3-triazol-5-ylidene (for 1c)) and cationic complexes ...


Photophysics of Ru(II) Dyads Derived from Pyrenyl-Substitued Imidazo[4,5-f][1,10]phenanthroline Ligands

20-Apr-2015 | Christian Reichardt; Mitch Pinto; Maria Wächtler; Mat Stephenson; Stephan Kupfer; Tariq Sainuddin; Julien Guthmuller ..., Journal of Physical Chemistry A, 2015

The photophysics of a series of Ru(II) dyads based on the 2-(1-pyrenyl)-1H-imidazo[4,5-f][1,10]-phenanthroline ligand was investigated. The ability of these metal complexes to intercalate DNA and induce cell death upon photoactivation makes them attractive photosensitizers for a range of ...


Structure-Related Mode-of-Action Differences of Anticancer Organoruthenium Complexes with β-Diketonates

17-Apr-2015 | Sara Seršen; Jakob Kljun; Kushtrim Kryeziu; Rostyslav Panchuk; Beatrix Alte; Wilfried Körner; Petra Heffeter; Walter ..., Journal of Medicinal Chemistry, 2015

A series of organoruthenium(II) chlorido complexes with fluorinated O,O-ligands [(η6-p-cymene)Ru(F3C-acac-Ar)Cl] (1a–6a) and their respective 1,3,5-triaza-7-phosphaadamantane (pta) derivatives [(η6-p-cymene)Ru(F3C-acac-Ar)pta]PF6 (1b–6b) were synthesized and fully characterized in both solution ...


Kinetically Inert Bispidol-Based Cu(II) Chelate for Potential Application to 64/67Cu Nuclear Medicine and Diagnosis

13-Apr-2015 | Amandine Roux; Aline M. Nonat; Jérémy Brandel; Véronique Hubscher-Bruder; Loïc J. Charbonnière, Inorganic Chemistry, 2015

A family of 2,4-pyridyl-disubstituted bispidol derivatives bearing methylene carboxylic acid ethyl esters (L1–L3), methylene carboxylic acids (L4 and L5), or methylenethiophene (L6) groups were synthesized. In water, all ligands form rigid 1:1 complexes in the presence of Zn(II) in which the ...


3,5-Disubstituted-2-(2′-pyridylpyrroles) Ir(III) complexes: Structural and photophysical characterization

12-Apr-2015 | Author(s): Teresa F. Mastropietro , Massimo La Deda , Nicolas Godbert , Loredana Ricciardi , Elisabeta I. Szerb ..., Journal of Organometallic Chemistry, 2015

Publication date: 15 June 2015 Source:Journal of Organometallic Chemistry, Volume 786 Author(s): Teresa F. Mastropietro , Massimo La Deda , Nicolas Godbert , Loredana Ricciardi , Elisabeta I. Szerb , Mauro Ghedini , Iolinda Aiello The synthesis, crystal structure and luminescence ...


Expanding the family of heteroleptic oxidovanadium(IV) compounds with salicylaldehyde semicarbazones and polypyridyl ligands showing anti-Trypanosoma cruzi activity

12-Apr-2015 | Author(s): Gonzalo Scalese , Julio Benítez , Santiago Rostán , Isabel Correia , Lara Bradford , Marisol Vieite ..., Journal of Inorganic Biochemistry, 2015

Publication date: Available online 12 March 2015 Source:Journal of Inorganic Biochemistry Author(s): Gonzalo Scalese , Julio Benítez , Santiago Rostán , Isabel Correia , Lara Bradford , Marisol Vieites , Lucía Minini , Alicia Merlino , E. Laura Coitiño , Estefania Birriel , ...


Modeling the retention mechanism for high‐performance liquid chromatography with a chiral ligand mobile phase and enantioseparation of mandelic acid derivatives

10-Apr-2015 | Shengqiang Tong, Mangmang Shen, Hu Zhang, Dongping Cheng, Jizhong Yan, Journal of Separation Science, 2015

The chromatographic retention mechanism describing relationship between retention factor and concentration of Cu2+(l‐phenylalanine)2 using chiral ligand mobile phase was investigated and eight mandelic acid derivatives were enantioseparated by chiral ligand exchange chromatography. The ...


ANS complex of St John's wort PR‐10 protein with 28 copies in the asymmetric unit: a fiendish combination of pseudosymmetry with tetartohedral twinning

07-Apr-2015 | Joanna Sliwiak, Zbigniew Dauter, Marcin Kowiel, Airlie J. McCoy, Randy J. Read, Mariusz Jaskolski, Acta Crystallographica Section D, 2015

Hyp‐1, a pathogenesis‐related class 10 (PR‐10) protein from St John's wort (Hypericum perforatum), was crystallized in complex with the fluorescent probe 8‐anilino‐1‐naphthalene sulfonate (ANS). The highly pseudosymmetric crystal has 28 unique protein molecules arranged in columns with sevenfold ...


Synthesis of Janus-Like Gold Nanoparticles with Hydrophilic/Hydrophobic Faces by Surface Ligand Exchange and Their Self-Assemblies in Water

01-Apr-2015 | Ryo Iida; Hitoshi Kawamura; Kenichi Niikura; Takashi Kimura; Shota Sekiguchi; Yasumasa Joti; Yoshitaka Bessho; Hidey ..., Langmuir, 2015

This study aims at the synthesis of Janus gold nanoparticles (Janus GNPs) with hydrophilic/hydrophobic faces by a simple ligand exchange reaction in an homogeneous system and at the elucidation of the self-assembled structures of the Janus GNPs in water. As hydrophilic surface ligands, we ...


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