Results 21 to 30 of about 11,336 (207)

Diversely N-substituted benzenesulfonamides dissimilarly bind to human carbonic anhydrases: crystallographic investigations of N-nitrosulfonamides

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2023
Carbonic anhydrases (CAs) are a zinc metalloenzymes that catalyse the reversible hydration of carbon dioxide to bicarbonate and proton, pivotal for a wide range of biological processes. CAs are involved in numerous pathologies and thus represent valuable
Andrea Angeli   +4 more
doaj   +1 more source

Vitamin Bs as Potent Anticancer Agents through MMP-2/9 Regulation

open access: yesFrontiers in Bioscience-Landmark
In recent years, the role of coenzymes, particularly those from the vitamin B group in modulating the activity of metalloenzymes has garnered significant attention in cancer treatment strategies.
Ha Vy Thi Vo, Namdoo Kim, Hyuck Jin Lee
doaj   +1 more source

On the singular, dual, and multiple positional specificity of manganese lipoxygenase and its G316A mutant

open access: yesJournal of Lipid Research, 2007
manganese lipoxygenase (Mn-LO) oxygenates 18:3n-3 and 18:2n-6 to bis-allylic 11S-hydroperoxy fatty acids, which are converted to 13R-hydroperoxy fatty acids.
Mirela Cristea, Ernst H. Oliw
doaj   +1 more source

metalloenzyme [PDF]

open access: yes, 2014
Citation: 'metalloenzyme' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.MT06765 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

De Novo Design and Structural Optimization of Mn(salen)‐Based Artificial Metalloenzymes for Asymmetric Sulfoxidation

open access: yesAngewandte Chemie, EarlyView.
We report the computational design of de novo proteins that bind Mn(salen)‐based complexes (L1) using Rosetta FastDesign and verified by AlphaFold2. After screening, the catalytic activity for the promising design (dnMSBP) toward enantioselective sulfoxidation of thioanisole was optimized based on its crystal structure. With 10 different substrates, we
Jing‐Xiang Wang   +6 more
wiley   +2 more sources

Two distinct ferredoxins are essential for nitrogen fixation by the iron nitrogenase in Rhodobacter capsulatus

open access: yesmBio
Nitrogenases are the only enzymes able to fix gaseous nitrogen into bioavailable ammonia and hence are essential for sustaining life. Catalysis by nitrogenases requires both a large amount of ATP and electrons donated by strongly reducing ferredoxins or ...
Holly Addison   +3 more
doaj   +1 more source

Carbonic Anhydrases: Role in pH Control and Cancer

open access: yesMetabolites, 2018
The pH of the tumor microenvironment drives the metastatic phenotype and chemotherapeutic resistance of tumors. Understanding the mechanisms underlying this pH-dependent phenomenon will lead to improved drug delivery and allow the identification of new ...
Mam Y. Mboge   +3 more
doaj   +1 more source

A Conserved Isoleucine Gates the Diffusion of CO and O2 to the Active Site of NiFe CO‐Dehydrogenase

open access: yesAngewandte Chemie, EarlyView.
A combination of protein film electrochemistry and site‐directed mutagenesis shows that isoleucine 563 (numbering of Thermococcus sp. AM4) gates the arrival of both CO and O2 to the active site of the nickel‐iron CO dehydrogenases. Mutations at this position increase the resistance to O2 at the cost of a slower reaction with CO.
Laura Opdam   +7 more
wiley   +2 more sources

Mineral composition of Aegle marmelos (L.) corrêa ash: Exploration of its ability to mimic the function of different metalloenzymes

open access: yesChemistry of Inorganic Materials
The motivation to find functional models of different metalloenzymes comes from their potential to develop better catalysts inspired by nature. Generally, metalloenzymes can activate aerial dioxygen due to the metal ions in it.
Kousik Ghosh   +5 more
doaj   +1 more source

Photometallobiocatalytic Asymmetric Radical‐Mediated Cross‐Coupling of Organotrifluoroborate Salts and Pyridotriazoles

open access: yesAngewandte Chemie, EarlyView.
An enantioselective photometallobiocatalytic cross‐coupling of pyridotriazoles and secondary alkyltrifluoroborate salts is developed. Cooperative catalysis using eosin B and an engineered protoglobin combines visible‐light‐mediated radical generation with enzymatic metal carbenoid activation, affording valuable N‐heterocyclic products in excellent ...
Huanan Wang   +5 more
wiley   +2 more sources

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