Results 81 to 90 of about 62,951 (328)

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

Stimuli‐Responsive Supramolecular Biomaterials for Cancer Theranostics

Advanced Science, EarlyView.
The ultimate goal of cancer theranostics is to get imaging agents and therapeutic cargo to tumor sites when and where they are required. “Smart” systems should be developed. This review discusses the characteristics of physiological stimuli, types and action modes of external stimuli, construction approaches and working principles, as well as ...
Wenting Hu, Binglin Ye, Guocan Yu, Feihe Huang, Zhengwei Mao   +4 more
wiley   +1 more source

How Does Fusarium oxysporum Sense and Respond to Nicotinaldehyde, an Inhibitor of the NAD+ Salvage Biosynthesis Pathway?

Frontiers in Microbiology, 2019
Plant pathogenic fungi are a major threat to food security and impose a severe economic burden, thus there is a continuous need to develop new strategies to manage them.
Gautam Anand, Daniel Waiger, Nuria Vital, Jacob Maman, Li Jun Ma, Shay Covo   +5 more
doaj   +1 more source

Electrochemistry and application of a novel monosubstituted squarate electron-transfer mediator in a glucose oxidase-doped poly(phenol) sensor [PDF]

, 2004
Electrosynthetic poly(phenol) nanofilms were deposited in situ on platinum electrodes in the presence and absence of glucose oxidase. The synthesis charges and currents of the nonconducting polymer films were recorded at various applied potentials for ...
Hall, Lincoln A., Iwuoha, Emmanuel I., Killard, Anthony J., Mathebe, Gretta N., Morrin, Aoife, Smyth, Malcolm R., Williams-Dottin, Avril R.   +6 more
core   +1 more source

A Modular Biosensor Platform for the Detection of Plastic Monomers and the Engineering of Promiscuous Amidases Toward Challenging Substrates

Advanced Science, EarlyView.
A luciferase is used as biosensor for aldehydes, produced enzymatically from different monomeric building blocks of plastics like polyurethanes (PUs). The screening platform is used to monitor esterase, amidase, and urethanase activity and to guide the selection of enzyme variants with improved hydrolytic activities toward difficult to hydrolyze ...
Ina Somvilla, Hannah Meier, Florian Oehlschläger, Hannes Meinert, Lena Koch, Patrick Ihrle, Katharina M. Mehnert, Morten Flieger, Jonas Boß, Marco Seifert, Dominique Böttcher, Uwe T. Bornscheuer, Thomas Bayer   +12 more
wiley   +1 more source

Comparative genomics and mutagenesis analyses of choline metabolism in the marine Roseobacter clade [PDF]

, 2015
Choline is ubiquitous in marine eukaryotes and appears to be widely distributed in surface marine waters; however, its metabolism by marine bacteria is poorly understood.
Andresen P.A., Gauthier M.J., Ghoul M., Ikawa M., Kiene R.P., Nau‐Wagner G., Prado S.   +6 more
core   +1 more source

Mechanisms of Aristolochic Acid Resistance in Specialist Butterflies and Evolutionary Insights for Potential Protective Pathways

Advanced Science, EarlyView.
The study provides an extreme example of insect adaptation to highly toxic defenses of host plants, and investigates the complex strategies to resist carcinogenic aristolochic acids, including physical isolation, metabolic detoxification, and DNA repair.
Yang Luan, Yubo Zhang, Jingjing Li, Jianqing Zhu, Yuyang Lei, Yushi Hu, Zhenqiang Xin, Tianpei Xie, Jiang Zheng, Yuanyuan Lin, Jingjing Shen, Yiyi Cao, Xinyue You, Jing Xi, Jiaying Wu, Weiying Liu, Xinyu Zhang, Yuanting Zheng, David J. Lohman, Leming Shi, Wei Zhang   +20 more
wiley   +1 more source

Fe‐S Protein FDX1 Triggers Tumor‐Intrinsic Innate Immunity via Mitochondrial Nucleic Acids Release to Orchestrate Ferroptosis in CCRCC

Advanced Science, EarlyView.
Restoration of the mitochondrial Fe–S protein FDX1 suppresses clear cell renal cell carcinoma by coupling ferroptosis with tumor‐intrinsic innate immune activation. FDX1 induces mitochondrial dysfunction and mtDNA/mt‐dsRNA release, activating cGAS–STING and RIG‐I/MDA5–MAVS signaling to elicit type I interferon responses, thereby promoting antigen ...
Xing Huang, Shaoqing Yu, Wenjie Wei, Wen Tao, Tianwei Cai, Lequan Wen, Jiali Ye, Chi Zhang, Huayi Feng, Senming Cao, Baojun Wang, Xin Ma, Yan Huang, Xu Zhang   +13 more
wiley   +1 more source

Insight into Solvent Coordination of an Iron Porphyrin Hydroxylamine Complex from Spectroscopy and DFT Calculations [PDF]

, 2018
The reduction of Fe(OEP)(NO) in the presence of substituted phenols leads to a three‐electron reduction to form Fe(OEP)(NH2OH), which has been characterized by visible spectroscopy and electron stoichiometry.
Rahman, Md. Hafizur, Ryan, Michael D.
core   +2 more sources

Leucine‐Dependent SLC7A5–PGAM5 Interaction Promotes Advanced Atherosclerosis Through Hindering Mitochondrial Function of Macrophages

Advanced Science, EarlyView.
Higher plasma leucine is associated with increased risk of new‐onset myocardial infarction. Leucine deprivation alleviates advanced atherosclerosis in mice. Tumor‐induced leucine deprivation reprograms macrophage metabolism and increases CD5Lhi macrophages in mouse plaques. Mechanistically, leucine deficiency reduced SLC7A5‐PGAM5 binding in macrophages,
Shan Zhong, Xueyu Wang, Qingsong Li, Siqi Wang, Bin Sun, Wenjun Ni, Gengyu Zhou, Fan Wang, Xianwei Xie, Cheng Jin, Gang Xu, Peng Zhao, Xiang Peng, Feiyuan Han, Xiangwen Xi, Yidan Wang, Juan Xu, Yue Wang, Xia Gu, Shuo Li, Jian Zhang, Shuijie Li, Jinwei Tian   +22 more
wiley   +1 more source