Results 81 to 90 of about 1,566,044 (372)

Peptide and protein sequence analysis by electron transfer dissociation mass spectrometry.

Proceedings of the National Academy of Sciences of the United States of America, 2004
Peptide sequence analysis using a combination of gas-phase ion/ion chemistry and tandem mass spectrometry (MS/MS) is demonstrated. Singly charged anthracene anions transfer an electron to multiply protonated peptides in a radio frequency quadrupole ...
J. Syka, J. Coon, M. Schroeder, J. Shabanowitz, D. Hunt   +4 more
semanticscholar   +1 more source

Calculation of the static and dynamical correlation energy of pseudo-one-dimensional beryllium systems via a many-body expansion [PDF]

, 2016
Low-dimensional beryllium systems constitute interesting case studies for the test of correlation methods because of the importance of both static and dynamical correlation in the formation of the bond.
B. Paulus, D. Koch, Dreizler R., E. Fertitta, Eschrig H.   +4 more
core   +2 more sources

Structural and mechanistic basis for the regulation of the chloroplast signal recognition particle by (p)ppGpp

FEBS Letters, EarlyView.
LHCPs are transported to the thylakoid membrane via the (cp)SRP pathway. This process involves a transit complex of (cp)SRP43, (cp)SRP54 and LHCP, which interacts with (cp)FtsY and Alb3 at the membrane. GTP hydrolysis by (cp)SRP54 and (cp)FtsY triggers complex dissociation.
Victor Zegarra, Paul Weiland, Pauline Anka Plitzko, Julia Thiery, Laura Czech, Felix Willmund, Patricia Bedrunka, Gert Bange   +7 more
wiley   +1 more source

Density Functional Theory Investigations on the Mechanism of Formation of Pa(V) Ion in Hydrous Solutions

Molecules, 2019
Due to the enormous threat of protactinium to the environment and human health, its disposal and chemistry have long been important topics in nuclear science.
Jun Ma, Chuting Yang, Jun Han, Jie Yu, Sheng Hu, Haizhu Yu, Xinggui Long   +6 more
doaj   +1 more source

The formation of supermassive black holes in the first galaxies

, 2010
We discuss the formation of supermassive black holes in the early universe, and how to probe their subsequent evolution with the upcoming mm/sub-mm telescope ALMA.
Banerjee, Robi, Glover, Simon C. O., Klessen, Ralf S., Schleicher, Dominik R. G., Spaans, Marco, Sur, Sharanya   +5 more
core   +1 more source

Unraveling the metastasis‐preventing effect of miR‐200c in vitro and in vivo

Molecular Oncology, EarlyView.
Advanced tumors and ineffective cancer treatments can lead to metastases in distant organs. The sole expression of microRNA 200c (miR‐200c) in breast cancer cells is shown to significantly reduce metastasis formation in xenograft mouse models. Various in vitro analyses revealed impeded migratory behavior, upon miR‐200c expression, as one prerequisite ...
Bianca Köhler, Emily Brieger, Tom Brandstätter, Elisa Hörterer, Ulrich Wilk, Jana Pöhmerer, Anna Jötten, Philipp Paulitschke, Chase P. Broedersz, Stefan Zahler, Joachim O. Rädler, Ernst Wagner, Andreas Roidl   +12 more
wiley   +1 more source

Water Self-Dissociation is Insensitive to Nanoscale Environments [PDF]

arXiv, 2021
Nanoconfinement effects on water dissociation and reactivity remain controversial, despite their importance to understand the aqueous chemistry at interfaces, pores, or aerosols. The pKw in confined environments has been assessed from experiments and simulations in a few specific cases, leading to dissimilar conclusions. Here, with the use of carefully
arxiv  

Rotational State Analysis of AlH+ by Two-Photon Dissociation [PDF]

J. Mol. Spectrosc. 300, 108 (2014), 2014
We perform ab-initio calculations needed to predict the cross-section of an experimentally accessible (1+1') resonance-enhanced multiphoton dissociation (REMPD) pathway in AlH+. Experimenting on AlH+ ions held in a radiofrequency Paul trap, we confirm dissociation via this channel with analysis performed using time-of-flight mass spectrometry.
arxiv   +1 more source

Gas phase bond dissociation enthalpies and enthalpies of isomerization/reaction for small hydrocarbon combustion related compounds between 300 and 1500 K: A comparison of Gaussian-4 (G4) theoretical values against experimental data [PDF]

, 2010
Gas phase calculations at 1 atmosphere pressure between 300 and 1500 K at 200 K intervals were conducted using the Gaussian-4 (G4) composite method level of theory on a representative set of reactions having broad relevance in hydrocarbon combustion ...
Kaya Forest, Sierra Rayne, Sierra Rayne
core   +3 more sources

Cellular liquid biopsy provides unique chances for disease monitoring, preclinical model generation and therapy adjustment in rare salivary gland cancer patients

Molecular Oncology, EarlyView.
We quantified and cultured circulating tumor cells (CTCs) of 62 patients with various cancer types and generated CTC‐derived tumoroid models from two salivary gland cancer patients. Cellular liquid biopsy‐derived information enabled molecular genetic assessment of systemic disease heterogeneity and functional testing for therapy selection in both ...
Nataša Stojanović Gužvić, Florian Lüke, Steffi Treitschke, Andrea Coluccio, Martin Hoffmann, Giancarlo Feliciello, Adithi Ravikumar Varadarajan, Xin Lu, Kathrin Weidele, Catherine Botteron, Silvia Materna–Reichelt, Felix Keil, Katja Evert, Florian Weber, Thomas Schamberger, Michael Althammer, Jirka Grosse, Dirk Hellwig, Christian Schulz, Stephan Seitz, Peter Ugocsai, Anke Schlenska‐Lange, Roman Mayr, Ulrich Kaiser, Wolfgang Dietmaier, Bernhard Polzer, Jens Warfsmann, Kamran Honarnejad, Tobias Pukrop, Daniel Heudobler, Christoph A. Klein, Christian Werno   +31 more
wiley   +1 more source