Results 31 to 40 of about 26,347 (256)

Surface Potential of Polycrystalline Hematite in Aqueous Medium

International Journal of Electrochemistry, 2011
The surface potential of polycrystalline hematite in aqueous sodium perchlorate environment as a function of pH was examined. Surface potential of hematite was obtained from measured electrode potential of a nonporous polycrystalline hematite electrode ...
Tajana Preočanin, Filip Stipić, Atiđa Selmani, Nikola Kallay   +3 more
doaj   +1 more source

THE EFFECT OF SOLVENT AND TEMPERATURE ON PROTONATION CONSTANTS OF DL-PHENYLALANINE IN DIFFERENT AQUEOUS SOLUTIONS OF METHANOL AT DIFFERENT TEMPERATURES

Studia Universitatis Babes-Bolyai Chemia, 2022
This research work has two sections. In first section, the equilibrium constant for protonation processes of DL-phenylalanine (K1, and K2) were determined in binary mixed solvents of water–methanol, containing 0, 10, 20, 30, 40, 50, 60, 70, and 80 % (v ...
Niloofar Soltani AHMADI, Farhoush KIANI, Seyed-Ahmad SHAHIDI, Azade GHORBANI-HASANSARAEI, Fatemeh ZABIHI, Fardad KOOHYAR   +5 more
doaj   +1 more source

AscF in the mycobacterial CIII–CIV supercomplex lacks metal and nucleotide binding but links malate oxidation to respiration

FEBS Letters, EarlyView.
The mycobacterial CIII‐CIV respiratory supercomplex is an obligate assembly, encompassing several subunits of unknown functions. We have characterized the intracellular subunit AscF, and show that it is unlikely to be a sensor for metals or nucleotides, but is required for growth on nonfermentable energy sources, and likely works as an adapter for ...
Eni Rile, Riccardo Diamanti, Daniel Lundin, Soni Sharma, Robin Lissner, Coenraad P. Kuil, Martin Högbom, Dirk Bald, Dan Sjöstrand   +8 more
wiley   +1 more source

Kinetics of the reduction of 4-amino and 4-cyanopyridinechlorocobaloximes by iron(II) [PDF]

Journal of the Serbian Chemical Society, 2006
Cobaloximes such as trans[Co(dmgH)2(Py–NH2)Cl] and trans-[Co(dmgH)2(Py–CN)Cl], where, dmgH = dimethylglyoximato anion, Py–NH2 =4-aminopyiridne and Py–CN = 4-cyanopyridine, were prepared and characterized by elemental analysis, UV-VIS, IR and NMR ...
A. DAYALAN, C. REVATHI
doaj   +3 more sources

A yeast model of 5‐oxoproline accumulation reveals a general toleration to 5‐oxoproline

FEBS Open Bio, EarlyView.
Using a yeast model, we show that even high accumulation of 5‐oxoproline causes only mild cellular stress and does not trigger oxidative stress. Instead, cells adapt by activating efflux pumps and diverse protective pathways, suggesting that previously proposed harmful effects of 5‐oxoproline may arise from indirect metabolic imbalances rather than the
Pratiksha Dubey, Vaishnavi Sanjayan, Praveen Singh, Shantanu Sengupta, Anand Kumar Bachhawat   +4 more
wiley   +1 more source

Correlation and Prediction of Solubility of CO2 in Amine Aqueous Solutions [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2010
The solubility of CO2 in the primary, secondary, tertiary and sterically hindered amine aqueous solutions at various conditions was studied. In the present work, the Modified Kent-Eisenberg (M-KE), the Extended Debye-Hückel (E-DH) and the Pitzer models ...
Mahdi Goharrokhi, Vahid Taghikhani, Cirous Ghotbi, Ali Akbar Safekordi, Hesam Najibi   +4 more
doaj  

Identifying and characterising a plant GH1 β‐glucosidase that exhibits hydrolytic activity on N‐linked glucopyranoside

FEBS Open Bio, EarlyView.
We report the first β‐glucosidase with demonstrated hydrolytic activity on an N‐linked glycopyranoside. The enzyme, native to maize, was biochemically characterised for this novel reaction, and structural modelling of the enzyme–substrate complex revealed several clues to the underlying reduced catalytic rate relative to its native O‐glycopyranoside ...
Hani Gharabli, Carlotta Chiesa, Maher Abou Hachem, Ditte Hededam Welner   +3 more
wiley   +1 more source

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

FEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty, Kelsi R. Hall, Zachary D. Tillett, Liam S. Turk, James S. Davies, Michael J. Currie, Hamish G. Brown, Sepideh Valimehr, Peter D. Mace, Andrew E. Whitten, Santosh Panjikar, Eric Hanssen, Rachel A. North, Renwick C.J. Dobson   +13 more
wiley   +1 more source

Thermodynamically consistent determination of free energies and rates in kinetic cycle models

Biophysical Reports, 2023
Kinetic and thermodynamic models of biological systems are commonly used to connect microscopic features to system function in a bottom-up multiscale approach.
Ian M. Kenney, Oliver Beckstein
doaj   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source