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Université de Fribourg

Hydrogen bond guidance and aromatic stacking drive liquid-liquid phase separation of intrinsically disordered histidine-rich peptides

Gabryelczyk, Bartosz ; Cai, Hao ; Shi, Xiangyan ; Sun, Yue ; Swinkels, Piet J.M. ; Salentinig, Stefan ; Pervushin, Konstantin ; Miserez, Ali

In: Nature Communications, 2019, vol. 10, no. 1, p. 1–12

Liquid-liquid phase separation (LLPS) of intrinsically disordered proteins (IDPs) is involved in both intracellular membraneless organelles and extracellular tissues. Despite growing understanding of LLPS, molecular-level mechanisms behind this process are still not fully established. Here, we use histidine-rich squid beak proteins (HBPs) as model IDPs to shed light on molecular interactions...

Université de Fribourg

Different coordination abilities of 1,7- and 4,7-phenanthroline in the reactions with copper(II) salts: Structural characterization and biological evaluation of the reaction products

Stevanović, Nevena Lj. ; Andrejević, Tina P. ; Crochet, Aurélien ; Ilic-Tomic, Tatjana ; Drašković, Nenad S. ; Nikodinovic-Runic, Jasmina ; Fromm, Katharina M. ; Djuran, Miloš I. ; Glišić, Biljana Đ.

In: Polyhedron, 2019, vol. 173, p. 114112

The reactions between equimolar amounts of CuX2 (X = NO3− and CF3SO3−) and two aromatic nitrogen-containing heterocycles differing in the position of nitrogen atoms, 1,7- and 4,7-phenanthroline (1,7- and 4,7-phen), were performed in ethanol/methanol at room temperature. When CuX2 salts were mixed with 4,7-phen, two copper(II) complexes, [Cu(NO3)2(4,7-Hphen)2](NO3)2 (1) and...

Université de Fribourg

Antiplasmodial activity and in vivo bio-distribution of chloroquine molecules released with a 4-(4-ethynylphenyl)-triazole moiety from organometallo-cobalamins

Rossier, Jeremie ; Sovari, Sara Nasiri ; Pavic, Aleksandar ; Vojnovic, Sandra ; Stringer, Tameryn ; Bättig, Sarah ; Smith, Gregory S. ; Nikodinovic-Runic, Jasmina ; Zobi, Fabio

In: Molecules, 2019, vol. 24, no. 12, p. 2310

We have explored the possibility of using organometallic derivatives of cobalamin as a scaffold for the delivery of the same antimalarial drug to both erythro- and hepatocytes. This hybrid molecule approach, intended as a possible tool for the development of multi-stage antimalarial agents, pivots on the preparation of azide- functionalized drugs which, after coupling to the vitamin, are...

Université de Fribourg

Synthesis and structural analysis of polynuclear silver(I) complexes with 4,7-phenanthroline

Stanojević, Ivana M. ; Savić, Nada D. ; Crochet, Aurélien ; Fromm, Katharina M. ; Đuran, Miloš I. ; Glišić, Biljana Đ.

In: Journal of the Serbian Chemical Society, 2019, vol. 84, no. 7, p. 689–699

New polynuclear silver(I) complexes, [Ag(CF3SO3)(4,7-phen)(CH3CN)]n (1) and [Ag(PO2F2)(4,7-phen)]n (2), were synthesized by the reaction of 4,7-phenanthroline (4,7-phen) and the corresponding AgX salt (X = CF3SO3 - and PF6 -) in 1:2 mole ratio, respectively, in methanol/acetone (1:1 volume ratio) at room temperature. The characterization of the complexes was established on the basis of...

Université de Fribourg

Silver(I) complexes with 4,7-phenanthroline efficient in rescuing the zebrafish embryos of lethal Candida albicans infection

Pavic, Aleksandar ; Savić, Nada D. ; Glišić, Biljana Đ. ; Crochet, Aurélien ; Vojnovic, Sandra ; Kurutos, Atanas ; Stanković, Dalibor M. ; Fromm, Katharina M. ; Nikodinovic-Runic, Jasmina ; Djuran, Miloš I.

In: Journal of Inorganic Biochemistry, 2019, vol. 195, p. 149–163

Five novel silver(I) complexes with 4,7-phenanthroline (4,7-phen), [Ag(NO3-O)(4,7- phen-μ-N4,N7)]n (1), [Ag(ClO4-О)(4,7-phen-μ-N4,N7)]n (2), [Ag(CF3COO-O)(4,7- phen-μ-N4,N7)]n (3), [Ag2(H2O)0.58(4,7-phen)3](SbF6)2 (4) and {[Ag2(H2O)(4,7- phen-μ-N4,N7)2](BF4)2}n (5) were synthesized, structurally elucidated and biologically evaluated. These complexes showed selectivity towards Candida spp....

Université de Fribourg

Mononuclear silver(I) complexes with 1,7-phenanthroline as potent inhibitors of Candida growth

Savić, Nada D. ; Vojnovic, Sandra ; Glišić, Biljana Đ. ; Crochet, Aurélien ; Pavic, Aleksandar ; Janjić, Goran V. ; Pekmezović, Marina ; Opsenica, Igor M. ; Fromm, Katharina M. ; Nikodinovic-Runic, Jasmina ; Djuran, Miloš I.

In: European Journal of Medicinal Chemistry, 2018, vol. 156, p. 760–773

Mononuclear silver(I) complexes with 1,7-phenanthroline (1,7-phen), [Ag(NO3-O,O′) (1,7-phen-N7)2] (1) and [Ag(1,7-phen-N7)2]X, X = ClO4− (2), CF3SO3− (3), BF4− (4) and SbF6− (5) were synthesized and structurally characterized by NMR (1H and 13C), IR and UV–Vis spectroscopy and ESI mass spectrometry. The crystal structures of 1, 3 and 4 were determined by single-crystal X-ray...

Université de Fribourg

Dissociative electron attachment and electronic excitation in Fe(CO)5

Allan, Michael ; Lacko, M. ; Papp, P. ; Matejčík, Š. ; Zlatar, Matija ; Fabrikant, Ilya I. ; Kočišek, J. ; Fedor, Juraj

In: Physical Chemistry Chemical Physics, 2018, vol. 20, no. 17, p. 11692–11701

In a combined experimental and theoretical study we characterize dissociative electron attachment (DEA) to, and electronically excited states of, Fe(CO)5. Both are relevant for electron-induced degradation of Fe(CO)5. The strongest DEA channel is cleavage of one metal–ligand bond that leads to production of Fe(CO)4−. High- resolution spectra of Fe(CO)4− reveal fine structures at the...

Consortium of Swiss Academic Libraries

Collaborative Research, Knowledge and Emergence

Zittoun, Tania ; Baucal, Aleksandar ; Cornish, Flora ; Gillespie, Alex

In: Integrative Psychological and Behavioral Science, 2007, vol. 41, no. 2, p. 208-217

Consortium of Swiss Academic Libraries

Religion as Dialogical Resource: A Socio-cultural Approach

Baucal, Aleksandar ; Zittoun, Tania

In: Integrative Psychological and Behavioral Science, 2013, vol. 47, no. 2, p. 207-219