Results 141 to 150 of about 194,006 (386)

Intestinal Neutral Ceramidase Deficiency Triggers Regulatory T Cell Response via Gd3 to Protect the Host from Intestinal Inflammation

Advanced Science, EarlyView.
Deletion of ASAH2 in intestinal epithelial cells induces the accumulation of ganglioside GD3 via regulating ST8SIA1. GD3 is identified as the glycolipid ligand for the inhibitory receptor Siglec‐E on macrophages. GD3/Siglec‐E ligation polarizes macrophages and promotes the proliferation of colonic ST2+ T regulatory cells via the induction of IL‐33. The
Zhishan Xu, Chao Lei, Mukesh K Sriwastva, Ting Wang, Amanguli Tuohongerbieke, Xiaotong Song, Collin Noud, Shannon Derkson, Yi Tan, Gerald Dryden, Craig J McClain, Zhongbin Deng   +11 more
wiley   +1 more source

Hydroxylation and Dechlorination of Tetrachlorohydroquinone by Rhodococcus sp. Strain CP-2 Cell Extracts [PDF]

, 1989
Max M. Häggblom, Dieter Janke, Mirja Salkinoja‐Salonen   +2 more
openalex   +1 more source

A Dynamic Gate Enables Regioselective Hydroxylation of Free Arginine by a Non‐Canonical Heme Enzyme

Advanced Science, EarlyView.
The YqcI/YcgG enzyme AglA employs a unique “sandwich” fold and a dynamic gating mechanism to selectively hydroxylate AMPn‐Arg at Nε. Site‐directed mutations reprogram regioselectivity or enable activity on free arginine by altering hydrogen‐bond networks, precisely positioning substrates.
Yuan Sun, Chao Dou, Weizhu Yan, Pengpeng Chen, Lu Zhang, Dan Zhou, Yanhui Zheng, Zhaolin Long, Shoujie Li, Xiaoqing Xu, Qiuxia Huang, Xiaofeng Zhu, Wei Cheng   +12 more
wiley   +1 more source

Mechanism of Efficient Smithsonite Flotation with a Ternary Composite Collector Under Sulfur-Free Conditions

Molecules
The increasing demand for zinc resources and the declining availability of sulfide zinc ore reserves have made the efficient utilization of zinc oxide a topic of considerable interest. In this study, a ternary composite collector ABN (Al-BHA-NaOL system)
Rui Li, Yanhai Shao, Jinhui Li, Chenjie Liu, Hongqin Chen, Xiao Meng, Xinru Jia   +6 more
doaj   +1 more source

The Remarkable Structural Diversity Achieved in ent-Kaurane Diterpenes by Fungal Biotransformations

Molecules, 2014
The use of biotransformations in organic chemistry is widespread, with highlights of interesting applications in the functionalization of natural products containing unactivated carbons, like the kaurane diterpenes.
Jacqueline A. Takahashi, Dhionne C. Gomes, Fernanda H. Lyra, Gabriel F. dos Santos, Leonardo R. Martins   +4 more
doaj   +1 more source

MgO nanocube hydroxylation and carbonation by nanometric water films

, 2023
Jean‐François Boily, N. Tan Luong, Michael Holmboe   +2 more
openalex   +1 more source

Magnetoelectric Nanotherapy Achieves Complete Tumor Ablation and Prolonged Survival in Pancreatic Cancer Murine Models

Advanced Science, EarlyView.
Magnetoelectric nanoparticles (MENPs) serve as externally controlled, MRI‐activated theranostic agents for targeted cancer therapy by inducing electric field‐based ablation in solid tumors. MENPs enable simultaneous precise tumor ablation and MRI signal modulation, allowing real‐time treatment monitoring and prediction of therapeutic outcomes with no ...
John Michael Bryant, Max Shotbolt, Emmanuel Stimphil, Victoria Andre, Elric Zhang, Veronica Estrella, Kazim Husain, Joseph Weygand, Doug Marchion, Alex Sebastian Lopez, Dominique Abrahams, Shawnus Chen, Mostafa Abdel‐Mottaleb, Skye Conlan, Ibrahim Oraiqat, Vaseem Khatri, Jose Alejandro Guevara, Shari Pilon‐Thomas, Gage Redler, Kujtim Latifi, Natarajan Raghunand, Kosj Yamoah, Sarah Hoffe, James Costello, Jessica M. Frakes, Ping Liang, Robert A. Gatenby, Mokenge Malafa, Sakhrat Khizroev   +28 more
wiley   +1 more source

Cryo‐EM Structures Reveal the Molecular Basis of Asymmetric Allosteric Activation by MMOB in the Hydroxylase of Soluble Methane Monooxygenase

Advanced Science, EarlyView.
Cryo‐EM analysis reveals an asymmetric MMOH–MMOB complex with distinct protomers, where MMOB binding triggers structural rearrangements from the surface to the active site. This conformational asymmetry shortens the Fe···Fe distance to 2.7 Å in one protomer, forming a geometry suitable for O2 activation and supporting a sequential catalytic mechanism ...
Yunha Hwang, Bumhan Ryu, Soyeon Park, Dong‐Heon Lee, Hyo Jin Hong, Jeong‐Geol Na, Chul Gyu Song, Hyun Goo Kang, Edwin Pozharski, Seung Jae Lee   +9 more
wiley   +1 more source

Green Polyols from Tamanu Seed Oil: Reaction Kinetics and Process Optimization

Communications in Science and Technology
Using methanol, this study examined the hydroxylation process of epoxidized tamanu seed oil (ETSO), with an oxirane number of 3.92 to 4.04 mmol/g, under the catalyzation of sulfuric acid (H2SO4).
Eni Budiyati, Mohammad Sofyan Habibburohman, Nur Ahmad Fauzi, Muhammad Azim Wasi, Malik Musthofa, Anisa Ur rahmah   +5 more
doaj   +1 more source

Synergistic Tuning of Conformational Dynamics, Electron Tunneling, and Substrate Positioning Enhances Electron Transfer in a P450 Chimera for Calcifediol Biosynthesis

Advanced Science, EarlyView.
A synergistic electron transfer (ET) optimization strategy modulating conformational dynamics, ET pathway, and substrate orientation is proposed for self‐sufficient cytochrome P450s. Guided by this strategy, a P450 variant with improved ET and catalytic efficiency was identified, and the underlying molecular basis was revealed by computational analysis.
Ziqi Liang, Xitong Song, Shuming Cheng, Yiwen Shen, Jie Zhang, Yaru Wang, Huiying Luo, Bin Yao, Binju Wang, Tao Tu   +9 more
wiley   +1 more source