Results 21 to 30 of about 283,238 (267)

Nature of Amide Carbonyl−Carbonyl Interactions in Proteins

Journal of the American Chemical Society, 2009
Noncovalent interactions define and modulate biomolecular structure, function, and dynamics. In many protein secondary structures, an intimate interaction exists between adjacent carbonyl groups of the main-chain amide bonds. As this short contact contributes to the energetics of protein conformational stability as well as protein-ligand interactions ...
Choudhary, Amit, Gandla, Deepa, Krow, Grant R., Raines, Ronald T.   +3 more
openaire   +2 more sources

Crystal structures of four new iridium complexes, each containing a highly flexible carbodiphosphorane PCP pincer ligand

Acta Crystallographica Section E: Crystallographic Communications, 2018
Compound [Ir(C8H12)(C51H45P4)]Cl2 or [Ir(cod)(CH(dppm)2-κ3P,C,P)]Cl2 (1a), was obtained from [IrCl(cod)]2 and the carbodiphosphorane (CDP) salt [CH(dppm)2]Cl [where cod = cycloocta-1,5-diene and dppm = bis(diphenylphosphino)methane]. Treatment of 1a with
Gabriel Julian Partl, Felix Nussbaumer, Inge Schlapp-Hackl, Walter Schuh, Holger Kopacka, Klaus Wurst, Paul Peringer   +6 more
doaj   +1 more source

An Automated Aerosol Collection and Extraction System to Characterize Electronic Cigarette Aerosols

Frontiers in Chemistry, 2021
Electronic cigarette (e-cigarette) market increased by 122% during 2014–2020 and is expected to continue growing rapidly. Despite their popularity, e-cigarettes are known to emit dangerous levels of toxic compounds (e.g., carbonyls), but a lack of ...
Yeongkwon Son, Andrey Khlystov
doaj   +1 more source

Synthesis and Structural Characterization of Manganese(I) Complexes Ligated by 2-Azabutadienes (ArS)₂C=C(H)-N=CPh₂

Molbank
The thioether-functionalized 2-azabutadienes (ArS)2C=C(H)-N=CPh2 (L1 Ar = Ph, L2 Ar = p-Tol) ligate to [Mn(CO)5Br] to form the octahedral five-membered S, N-chelate complexes fac-[MnBr(CO)3{(ArS)2C=C(H)-N=CPh2] (1 Ar = Ph; 2 Ar = p-Tol), whose crystal ...
Rodolphe Kinghat, Abderrahim Khatyr, Michael Knorr, Yoann Rousselin, Marek M. Kubicki   +4 more
doaj   +1 more source

Synthesis and Characterization of Novel Cobalt Carbonyl Phosphorus and Arsenic Clusters

Molecules
Phosphorus- and arsenic-containing cobalt clusters are an interesting class of compounds that continue to provide new structures with captivating bonding patterns.
Mehdi Elsayed Moussa, Susanne Bauer, Christian Graßl, Christoph Riesinger, Gábor Balázs, Manfred Scheer   +5 more
doaj   +1 more source

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

FEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg, Martine Hjeltnes, Josephine Krieger, Joshua E. Elias, Maria Stensland, Kristian Holm, Xiaojun Jiang, Chuki Khangsar, Tuula A. Nyman, Arthur Kaser, Johannes R. Hov, Tom H. Karlsen, Nicole C. Kaneider, Frode L. Jahnsen, Georg Schneditz   +14 more
wiley   +1 more source

1,3-Dipolar Cycloaddition Reactions of Azomethine Ylides with Carbonyl Dipolarophiles Yielding Oxazolidine Derivatives

Molecules, 2016
We provide a comprehensive account of the 1,3-dipolar cycloaddition reactions of azomethine ylides with carbonyl dipolarophiles. Many different azomethine ylides have been studied, including stabilized and non-stabilized ylides.
Adam G. Meyer, John H. Ryan
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Synthesis and Structural Characterization of Cobalt Complexes Ligated by N-Methyl(bis(diphenylphosphino)amine)

Molbank
The reaction of the short-bite bis(diphosphino)amine ligand Ph2PN(Me)PPh2 (Medppa) with an equimolar amount of [Co2(CO)8] in toluene solution yielded the diphosphane-bridged complex bis(µ2-carbonyl)(µ-bis(diphenylphosphino)methylamine)-tetracarbonyl ...
Mélaine Wang, Isabelle Jourdain, Michael Knorr, Carsten Strohmann, Annika Schmidt   +4 more
doaj   +1 more source

fac-Acetonitriletricarbonyl(dimethylcarbamodithioato-κ2S,S′)rhenium(I): crystal structure and Hirshfeld surface analysis

Acta Crystallographica Section E: Crystallographic Communications, 2017
The title compound, [Re(C3H6NS2)(C2H3N)(CO)3], features an octahedrally coordinated ReI atom within a C3NS2 donor set defined by three carbonyl ligands in a facial arrangement, an acetonitrile N atom and two S atoms derived from a symmetrically ...
Sang Loon Tan, See Mun Lee, Peter J. Heard, Nathan R. Halcovitch, Edward R. T. Tiekink   +4 more
doaj   +1 more source