Results 91 to 100 of about 23,484 (216)

A uracil nitroso amine based colorimetric sensor for the detection of Cu²⁺ ions from aqueous environment and its practical applications [PDF]

, 2015
A simple uracil nitroso amine based colorimetric chemosensor (UNA-1) has been synthesized and screened for its cation recognition ability. Sensor UNA-1 exhibited a high sensitivity and selectivity towards Cu²⁺ ions in aqueous medium in the presence of a ...
Chen, Lingxin, Devi, Manisha, Fabiao, Yu, Nandre, Jitendra P., Patil, Prashant A., Patil, Samadhan R., Patil, Umesh D., Pradeep, Chullikkattil P., Redshaw, Carl, Sahoo, Suban K., Yu Fabiao   +10 more
core   +2 more sources

Mitochondrial β‐carbonic anhydrase is a conserved metabolic rheostat for branched‐chain amino acid catabolism and metabolic flexibility

New Phytologist, EarlyView.
Summary Carbonic anhydrases (CAs) are ubiquitous metalloenzymes that catalyze the reversible hydration of CO2, enabling fundamental processes in organisms across all domains of life. Among all CAs, the role of mitochondrial βCA remains poorly understood. Here, we identify a mitochondrial βCA, βCA6, as a key regulator of branched‐chain amino acid (BCAA)
Naveen Sharma, Thomas D. Sharkey, Federica Brandizzi   +2 more
wiley   +1 more source

ENZYMATIC HYDROGEN BIOPRODUCTION. STRUCTURE, FUNCTION AND APPLICATION OF HYDROGENASES [PDF]

Postępy Mikrobiologii, 2021
Małgorzata Witkowska, Agnieszka Żylicz-Stachula, Anna Struck   +2 more
doaj   +1 more source

Optimizing Group Transfer Catalysis by Copper Complex with Redox-Active Ligand in an Entatic State

iScience, 2020
Summary: Metalloenzymes use earth-abundant non-noble metals to perform high-fidelity transformations in the biological world. To ensure chemical efficiency, metalloenzymes have acquired evolutionary reactivity-enhancing tools.
Yufeng Ren, Jeremy Forté, Khaled Cheaib, Nicolas Vanthuyne, Louis Fensterbank, Hervé Vezin, Maylis Orio, Sébastien Blanchard, Marine Desage-El Murr   +8 more
doaj   +1 more source

Multiple States of Nitrile Hydratase from Rhodococcus equi TG328-2: Structural and Mechanistic Insights from Electron Paramagnetic Resonance and Density Functional Theory Studies [PDF]

, 2017
Iron-type nitrile hydratases (NHases) contain an Fe(III) ion coordinated in a characteristic “claw setting” by an axial cysteine thiolate, two equatorial peptide nitrogens, the sulfur atoms of equatorial cysteine-sulfenic and cysteine-sulfinic acids, and
Stein, Natalia, Gumataotao, Natalie, Hajnas, Natalia, Wu, Rui, Wasantha Lankathilaka, Karunagala Pathiranage, Bornscheuer, Uwe, Liu, Dali, Fiedler, Adam T., Holz, Richard C., Bennett, Brian   +9 more
core   +1 more source

A readily accessible multifunctional probe: simultaneous recognition of the cation ZN²⁺ and the anion F⁻ via distinguishable wavelengths [PDF]

, 2017
The probe 1 was readily prepared via condensation of 8-formyl-7-hydroxy-coumarin and carbonic dihydrazide in a one-step procedure. Probe 1 exhibited high sensitivity and selectivity towards Zn²⁺ and F⁻ through a “turn-on” fluorescence response and/or ...
Jin, Zongwen, Mu, Lan, Redshaw, Carl, Wei, Gang, Zeng, Li, Zeng, Xi, Zhao, Jiang Lin   +6 more
core   +1 more source

Antimicrobial and Cytotoxic Activities of Biogenic Nanoparticles Produced by Cyanobacteria

ChemBioChem, Volume 27, Issue 5, 13 March 2026.
The article reviews the green synthesis of biogenic nanoparticles produced by cyanobacteria, highlighting their antimicrobial and cytotoxic properties. These nanoparticles, formed intra‐ or extracellularly, show activity against Gram‐positive and Gram‐negative bacteria as well as fungi and can induce apoptosis in tumor cells.
Laíne Santos Ribeiro, Rhuana Valdetário Médice, Janaína Morone Bavini, Camila Manoel Crnkovic, Samuel Cavalcante do Amaral   +4 more
wiley   +1 more source

Activation studies with amines and amino acids of the β-carbonic anhydrase encoded by the Rv3273 gene from the pathogenic bacterium Mycobacterium tuberculosis

Journal of Enzyme Inhibition and Medicinal Chemistry, 2018
The activation of a β-class carbonic anhydrase (CAs, EC 4.2.1.1) from Mycobacterium tuberculosis, encoded by the gene Rv3273 (mtCA 3), was investigated using a panel of natural and non-natural amino acids and amines. mtCA 3 was effectively activated by D-
Andrea Angeli, Sonia Del Prete, Sameh M. Osman, Fatmah A. S. Alasmary, Zeid AlOthman, William A. Donald, Clemente Capasso, Claudiu T. Supuran   +7 more
doaj   +1 more source

Phasentrennung von Nukleinsäuren: Mechanismen, Eigenschaften und Anwendungen

Angewandte Chemie, Volume 138, Issue 11, 9 March 2026.
Jüngste Entdeckungen zeigen, dass einzelsträngige langkettige Nukleinsäuren temperaturinduziert phasentrennen und dabei mikrometergroße Kondensate bilden. Dieser Minireview fasst das aktuelle mechanistische Verständnis dieses Phänomens zusammen, beschreibt Strategien zur gezielten Kontrolle der physikalischen und chemischen Eigenschaften der Kondensate
Weixiang Chen, Johann Fritzen, Andreas Walther   +2 more
wiley   +1 more source

Divalent Metal Binding Properties of the Methionyl Aminopeptidase from \u3cem\u3eEscherichia coli\u3c/em\u3e [PDF]

, 2000
The metal-binding properties of the methionyl aminopeptidase from Escherichia coli (MetAP) were investigated. Measurements of catalytic activity as a function of added Co(II) and Fe(II) revealed that maximal enzymatic activity is observed after the ...
Bennett, Brian, Copik, Alicja J., D\u27Souza, Ventris M., Holz, Richard C.   +3 more
core   +1 more source