Femtosecond intramolecular rearrangement of the CH3NCS radical cation [PDF]
, 2022 Strong-field ionization, involving tunnel ionization and electron rescattering, enables femtosecond time-resolved dynamics measurements of chemical reactions involving radical cations. Here, we compare the formation of CH3S+ following the strong-field ionization of the isomers CH3SCN and CH3NCS.
arxiv +1 more source
The mucin-degradation strategy of Ruminococcus gnavus:The importance of intramolecular trans-sialidases [PDF]
, 2016 We previously identified and characterized an intramolecular trans-sialidase (IT-sialidase) in the gut symbiont Ruminococcus gnavus ATCC 29149, which is associated to the ability of the strain to grow on mucins. In this work we have obtained and analyzed
Crossman, Lisa C. +6 more
core +2 more sources
An Artificial Metal‐Free Peroxidase Designed Using a Ferritin Cage for Bioinspired Catalysis
Angewandte Chemie, EarlyView.Designing artificial enzymes remains challenging due to the need for precise active site control. Here, we present a simple strategy to create metal‐free artificial enzymes by engineering Histidine clusters inside a ferritin cage. The resulting catalyst mimics peroxidase activity, and its stable cage structure offers new insights into supramolecular ...
Jiaxin Tian +4 more
wiley +2 more sources
The bdbDC operon of Bacillus subtilis encodes thiol-disulfide oxidoreductases required for competence development [PDF]
, 2002 The development of genetic competence in the Gram-positive eubacterium Bacillus subtilis is a complex postexponential process. Here we describe a new bicistronic operon, bdbDC, required for competence development, which was identified by the B.
Bolhuis, A +11 more
core +6 more sources
Global Methods to Monitor the Thiol–Disulfide State of Proteins In Vivo [PDF]
, 2006 Cysteines play an important role in protein biochemistry. The unique chemical property and high reactivity of the free thiol group makes reduced cysteine a versatile component of catalytic centers and metal binding sites in many cytosolic proteins and ...
Jakob, Ursula, Leichert, Lars Ingo
core +1 more source
Thermal rectification in carbon nanotube intramolecular junctions: Molecular dynamics calculations [PDF]
Phys. Rev. B 76, 085424 (2007), 2007 We study heat conduction in (n, 0)/(2n, 0) intramolecular junctions by using molecular dynamics method. It is found that the heat conduction is asymmetric, namely, heat transports preferably in one direction. This phenomenon is also called thermal rectification.
arxiv +1 more source
A perturbation density functional theory for the competition between inter and intramolecular association [PDF]
J. Chem. Phys. 136, 154103 (2012), 2013 Using the framework of Wertheim's thermodynamic perturbation theory we develop the first density functional theory which accounts for intramolecular association in chain molecules. To test the theory new Monte Carlo simulations are performed at a fluid solid interface for a 4 segment chain which can both intra and intermolecularly associate. The theory
arxiv +1 more source
Sn-Beta zeolites with borate salts catalyse the epimerization of carbohydrates via an intramolecular carbon shift [PDF]
, 2012 Carbohydrate epimerization is an essential technology for the widespread production of rare sugars. In contrast to other enzymes, most epimerases are only active on sugars substituted with phosphate or nucleotide groups, thus drastically restricting ...
A Corma +45 more
core +1 more source
Extemporaneous Mechanochemistry: Shockwave Induced Ultrafast Chemical Reactions Due to Intramolecular Strain Energy [PDF]
arXiv, 2022 Regions of energy localization referred to as hotspots are known to govern shock initiation and the run-to-detonation in energetic materials. Mounting computational evidence points to accelerated chemistry in hotspots from large intramolecular strains induced via the interactions between the shockwave and microstructure.
arxiv
Bacillus subtilis YtpP and Thioredoxin A Are New Players in the Coenzyme-A-Mediated Defense Mechanism against Cellular Stress [PDF]
, 2023 Coenzyme A (CoA) is an important cellular metabolite that is critical for metabolic processes and the regulation of gene expression. Recent discovery of the antioxidant function of CoA has highlighted its protective role that leads to the formation of a ...
Baczynska, Maria +9 more
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