Results 41 to 50 of about 566,413 (348)

Ring-Expansion Metathesis Polymerization: Catalyst-Dependent Polymerization Profiles [PDF]

, 2009
Ring-expansion metathesis polymerization (REMP) mediated by recently developed cyclic Ru catalysts has been studied in detail with a focus on the polymer products obtained under varied reaction conditions and catalyst architectures.
Boydston, Andrew J., Gorodetskaya, Irina A., Grubbs, Robert H., Kornfield, Julia A., Spiess, Hans W., Xia, Yan, Yao, Yefeng   +6 more
core   +2 more sources

Brevibacillin 2V, a Novel Antimicrobial Lipopeptide With an Exceptionally Low Hemolytic Activity

Frontiers in Microbiology, 2021
Bacterial non-ribosomally produced peptides (NRPs) form a rich source of antibiotics, including more than 20 of these antibiotics that are used in the clinic, such as penicillin G, colistin, vancomycin, and chloramphenicol.
Xinghong Zhao, Xiaoqi Wang, Rhythm Shukla, Rhythm Shukla, Raj Kumar, Markus Weingarth, Eefjan Breukink, Oscar P. Kuipers   +7 more
doaj   +1 more source

Effect of charged lipids on the ionization behavior of glutamic acid containing transmembrane helices [PDF]

, 2020
Transmembrane proteins make up critical components of living cells. Protein function can be greatly impacted by the charged state of its respective components, the side chains of amino acid residues.
Nunn, Brooke
core   +2 more sources

A Versatile Ligand Platform that Supports Lewis Acid Promoted Migratory Insertion [PDF]

, 2012
A helping hand: Incorporation of Group 2 Lewis acids into a macrocycle appended to a phosphine ligand attached to a rhenium carbonyl complex promotes otherwise unfavorable transformations of coordinated CO (see scheme; M=Ca, Sr).
Bercaw, John E., Hazari, Amaruka, Labinger, Jay A.   +2 more
core   +1 more source

Targeting TNBC: core–shell polycationic polyurea dendrimers with inherent anticancer activity

FEBS Open Bio, EarlyView.
Core–shell polycationic PURE dendrimers were tested in TNBC‐derived tumor models. Both formulations selectively targeted TNBC and effectively reduced tumor volume. PUREG4‐OEI48 suppressed tumor growth without detectable toxicity, whereas PUREG4‐OCEI24, despite showing efficacy, induced hepatic toxicity.
Adriana Cruz, Bruna Abreu, Cindy Mendes, Catarina Freitas‐Dias, Filipe Gonçalves, Fernanda Silva, José Ramalho, Saudade André, Vasco D. B. Bonifácio, Jacinta Serpa   +9 more
wiley   +1 more source

Brevibacillin 2V Exerts Its Bactericidal Activity via Binding to Lipid II and Permeabilizing Cellular Membranes

Frontiers in Microbiology, 2021
Lipo-tridecapeptides, a class of bacterial non-ribosomally produced peptides, show strong antimicrobial activity against Gram-positive pathogens, including antibiotic-resistant Staphylococcus aureus and Enterococcus spp.
Xinghong Zhao, Xiaoqi Wang, Rhythm Shukla, Rhythm Shukla, Raj Kumar, Markus Weingarth, Eefjan Breukink, Oscar P. Kuipers   +7 more
doaj   +1 more source

One- and two-dimensional N-qubit systems in capacitively coupled quantum dots

, 2001
Coulomb blockade effects in capacitively coupled quantum dots can be utilized for constructing an N-qubit system with antiferromagnetic Ising interactions.
A. Barenco, B. E. Kane, B. Hoefflinger, C. H. Bennett, C. Livermore, D. Loss, D. P. DiVincenzo, D. P. DiVincenzo, D. V. Averin, G. Springholz, J. E. Mooij, L. A. Openov, L. Guo, L. M. K. Vandersypen, L. Viola, N. B. Zhitenev, N. Linden, P. Zanardi, R. Landauer, R. Landauer, R. R. Ernst, S. Lloyd, S. Lloyd, S. Tiwari, T. Fujisawa, T. H. Oosterkamp, T. Tanamoto, Tetsufumi Tanamoto, Y. Makhlin, Y. Nakamura   +29 more
core   +1 more source

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

FEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies, Garth L. Maker, Ian F. Musgrave, Samantha Lodge   +3 more
wiley   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Detection of Metabolites by Proton Ex Vivo NMR, in Vivo MR Spectroscopy Peaks and Tissue Content Analysis: Biochemical-Magnetic Resonance Correlation: Preliminary Results [PDF]

, 2009
*Aim*: Metabolite concentrations by in vivo magnetic resonance spectroscopy and ex vivo NMR spectroscopy were compared with excised normal human tissue relaxation times and tissue homogenate contents. *Hypothesis*: Biochemical analysis
Arun Agrawala, Madan Rehani, Rakesh Sharma   +2 more
core   +1 more source