نتایج جستجو برای: epoxide hydrolase

تعداد نتایج: 26425  

Journal: :Current protocols in toxicology 2007
Christophe Morisseau Bruce D Hammock

The human soluble epoxide hydrolase (sEH; EC 3.3.3.2) is the product of the EXPH2 gene. The sEH catalyzes the addition of a water molecule to an epoxide, resulting in the corresponding diol. Early work suggested a role of sEH in detoxifying a wide array of xenobiotic epoxides; however, recent findings clearly implicate the sEH in the regulation of blood pressure, pain, and inflammation through ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Alena Stsiapanava Bengt Samuelsson Jesper Z Haeggström

Human leukotriene (LT) A4 hydrolase/aminopeptidase (LTA4H) is a bifunctional enzyme that converts the highly unstable epoxide intermediate LTA4 into LTB4, a potent leukocyte activating agent, while the aminopeptidase activity cleaves and inactivates the chemotactic tripeptide Pro-Gly-Pro. Here, we describe high-resolution crystal structures of LTA4H complexed with LTA4, providing the structural...

2015
Friederike I Nollmann Antje K Heinrich Alexander O Brachmann Christophe Morisseau Krishnendu Mukherjee Ángel M Casanova-Torres Frederic Strobl David Kleinhans Sebastian Kinski Katharina Schultz Michael L Beeton Marcel Kaiser Ya-Yun Chu Long Phan Ke Aunchalee Thanwisai Kenan A J Bozhüyük Narisara Chantratita Friedrich Götz Nick R Waterfield Andreas Vilcinskas Ernst H K Stelzer Heidi Goodrich-Blair Bruce D Hammock Helge B Bode

Simple urea compounds ("phurealipids") have been identified from the entomopathogenic bacterium Photorhabdus luminescens, and their biosynthesis was elucidated. Very similar analogues of these compounds have been previously developed as inhibitors of juvenile hormone epoxide hydrolase (JHEH), a key enzyme in insect development and growth. Phurealipids also inhibit JHEH, and therefore phurealipi...

Journal: :The Biochemical journal 1986
N J Bulleid A B Graham J A Craft

Microsomal epoxide hydrolase was purified from rat liver, and different fractions of the purified enzyme, which varied in their contents of phospholipid, were obtained by ion-exchange chromatography. One fraction (A), which did not bind to CM-cellulose, had a high phospholipid content, and a second fraction (B), which was eluted from CM-cellulose at high ionic strength, had a low phospholipid c...

Journal: :Mutation research 1980
M A El-Tantawy B D Hammock

7 epoxide-containing compounds: allylbenzene oxide, styrene oxide, trans-beta-methylstyrene oxide, 4-chlorophenyl glycidyl ether, vinylcyclohexene dioxide, octene dioxide and hexene dioxide were evaluated for mutagenic activity in 4 histidine-requiring strains of Salmonella typhimurium, namely: TA1535, TA100, TA1537 and TA98. These epoxides, except trans-beta-methylstyrene oxide, were mutagenic...

Journal: :Journal of neuroscience research 2009
Seema Rawal Christophe Morisseau Bruce D Hammock Amruthesh C Shivachar

The microsomal epoxide hydrolase (mEH) and soluble epoxide hydrolase (sEH) enzymes exist in a variety of cells and tissues, including liver, kidney, and testis. However, very little is known about brain epoxide hydrolases. Here we report the expression, localization, and subcellular distribution of mEH and sEH in cultured neonatal rat cortical astrocytes by immunocytochemistry, subcellular frac...

Journal: :Biochemistry 2005
Katherine L Tran Pavel A Aronov Hiromasa Tanaka John W Newman Bruce D Hammock Christophe Morisseau

The EPXH2 gene encodes for the soluble epoxide hydrolase (sEH), a homodimeric enzyme with each monomer containing two domains with distinct activities. The C-terminal domain, containing the epoxide hydrolase activity (Cterm-EH), is involved in the metabolism of arachidonic acid epoxides, endogenous chemical mediators that play important roles in blood pressure regulation, cell growth, and infla...

Journal: :British journal of clinical pharmacology 1997
I Bernus R G Dickinson W D Hooper M J Eadie

AIMS The study investigated the mechanism of the interaction between valproate and carbamazepine which causes raised plasma carbamazepine-10,11-epoxide concentrations with unchanged plasma carbamazepine concentrations. This interaction has usually been attributed to valproate inhibiting epoxide hydrolase, the enzyme that catalyses the biotransformation of carbamazepine-10,11-epoxide to carbamaz...

2013
Maria E S Lind Fahmi Himo

Cluster model: Large active-site models (see figure) are used to investigate the selectivity of limonene epoxide hydrolase, both the wild type and mutants optimized through directed evolution. Good agreement is found between theory and the experimental data, thus demonstrating that the quantum chemical cluster approach can be a powerful tool in the field of asymmetric biocatalysis.

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