Characterization and structure-based protein engineering of a regiospecific saponin acetyltransferase from Astragalus membranaceus

L Wang, Z Jiang, J Zhang, K Chen, M Zhang… - Nature …, 2023 - nature.com
Acetylation contributes to the bioactivity of numerous medicinally important natural products.
However, little is known about the acetylation on sugar moieties. Here we report a saponin …

QM/MM Studies into the H2O2-Dependent Activity of Lytic Polysaccharide Monooxygenases: Evidence for the Formation of a Caged Hydroxyl Radical Intermediate

B Wang, EM Johnston, P Li, S Shaik, GJ Davies… - ACs …, 2018 - ACS Publications
Lytic polysaccharide monooxygenases (LPMOs) are promising enzymes for the conversion
of lignocellulosic biomass into biofuels and biomaterials. Classically considered …

Open-source, python-based redevelopment of the ChemShell multiscale QM/MM environment

Y Lu, MR Farrow, P Fayon, AJ Logsdail… - Journal of chemical …, 2018 - ACS Publications
ChemShell is a scriptable computational chemistry environment with an emphasis on
multiscale simulation of complex systems using combined quantum mechanical and …

How human TET2 enzyme catalyzes the oxidation of unnatural cytosine modifications in double-stranded DNA

SO Waheed, A Varghese, SS Chaturvedi… - ACS …, 2022 - ACS Publications
Methylation of cytosine bases is strongly linked to gene expression, imprinting, aging, and
carcinogenesis. The ten-eleven translocation (TET) family of enzymes, which are Fe (II)/2 …

Catalysis by the non-heme iron (II) histone demethylase PHF8 involves iron center rearrangement and conformational modulation of substrate orientation

SS Chaturvedi, R Ramanan, N Lehnert… - ACS …, 2019 - ACS Publications
PHF8 (KDM7B) is a human non-heme 2-oxoglutarate (2OG) JmjC domain oxygenase that
catalyzes the demethylation of the di/mono-Nε-methylated K9 residue of histone H3. Altered …

Atomic and Electronic Structure Determinants Distinguish between Ethylene Formation and l-Arginine Hydroxylation Reaction Mechanisms in the Ethylene-Forming …

SS Chaturvedi, R Ramanan, J Hu, RP Hausinger… - ACS …, 2021 - ACS Publications
The ethylene-forming enzyme (EFE) is a non-heme Fe (II), 2-oxoglutarate (2OG), and l-
arginine (l-Arg)-dependent oxygenase that catalyzes dual reactions: the generation of …

Chemo‐and regioselective dihydroxylation of benzene to hydroquinone enabled by engineered cytochrome P450 monooxygenase

H Zhou, B Wang, F Wang, X Yu, L Ma, A Li… - Angewandte …, 2019 - Wiley Online Library
Hydroquinone (HQ) is produced commercially from benzene by multi‐step Hock‐type
processes with equivalent amounts of acetone as side‐product. We describe an efficient …

Structural insight into the catalytic mechanism of the endoperoxide synthase FtmOx1

L Wu, Z Wang, Y Cen, B Wang, J Zhou - Angewandte Chemie, 2022 - Wiley Online Library
Abstract The 2‐oxoglutarate (2OG)‐dependent non‐heme enzyme FtmOx1 catalyzes the
endoperoxide biosynthesis of verruculogen. Although several mechanistic studies have …

Catalytic mechanism of human ten-eleven translocation-2 (tet2) enzyme: Effects of conformational changes, electric field, and mutations

SO Waheed, SS Chaturvedi… - ACS …, 2021 - ACS Publications
Ten-eleven translocation (TET) family of enzymes are non-heme Fe (II)-and 2-oxoglutarate
(2OG)-dependent oxygenases that perform oxidation of the methyl group of the 5 …

Revealing the catalytic strategy of FTO

A Varghese, SO Waheed, SS Chaturvedi, I DiCastri… - Chem Catalysis, 2023 - cell.com
The fat-mass and obesity-associated protein (FTO) is an Fe (II)-and 2-oxoglutarate (2OG)-
dependent oxygenase of the AlkB family and is linked with obesity and cancer. The enzyme …