Results 71 to 80 of about 251,884 (333)

Crystal structure of 4,6-dichloro-5-methylpyrimidine

Acta Crystallographica Section E: Crystallographic Communications, 2015
The title compound, C5H4Cl2N2, is essentially planar with an r.m.s. deviation for all non-H atoms of 0.009 Å. The largest deviation from the mean plane is 0.016 (4) Å for an N atom. In the crystal, molecules are linked by pairs of C—H...N hydrogen bonds,
Meriem Medjani, Noudjoud Hamdouni, Ouarda Brihi, Ali Boudjada, Jean Meinnel   +4 more
doaj   +1 more source

De novo prediction of PTBP1 binding and splicing targets reveals unexpected features of its RNA recognition and function. [PDF]

, 2014
The splicing regulator Polypyrimidine Tract Binding Protein (PTBP1) has four RNA binding domains that each binds a short pyrimidine element, allowing recognition of diverse pyrimidine-rich sequences.
Black, Douglas L, Fu, Xiang-Dong, Han, Areum, Linares, Anthony J, Stoilov, Peter, Zhou, Yu   +5 more
core   +4 more sources

Ammonia Detoxification Inhibits Liver Metastasis by Reshaping Hepatic Microenvironment

Advanced Science, EarlyView.
Liver metastasis diverts aspartate into hyperactive pyrimidine synthesis, disrupting urea cycling and causing pathogenic ammonia accumulation. Ammonia dually reprograms the microenvironment by: (1) activating hepatic stellate cells (HSCs) into pro‐fibrotic metastasis‐associated fibroblasts (MAFs), and (2) suppressing anti‐tumor monocytes/macrophages ...
Sumin Sun, Haili Hu, Long Chen, Yuan Gao, Peng Sun, Liming Chen   +5 more
wiley   +1 more source

Diazo Transfer From Nitrous Oxide Employing Phosphorus Ylides

Angewandte Chemie, EarlyView.
A phosphorus ylide‐mediated strategy achieves the direct fixation of nitrous oxide (N2O) to access diazo compounds, which after intra‐ or intermolecular trapping, afford N2‐containing organic building blocks. This approach provides an alternative to hazardous diazo‐transfer reagents and establishes N2O fixation as a sustainable methodology.
Jhen‐Kuei Yu, Jan Niclas Ludwig, Patrick Wolf Antoni, David Tymann, Max Martin Hansmann   +4 more
wiley   +2 more sources

Sequence-specific Solution Structures of the Four Isosequential Pairs of Single-stranded DNAs and RNAs [PDF]

, 2008
The role of the sequence-context in the self-organization of four single-stranded (ss) isosequential pairs of DNAs (1 – 4) and RNAs (5 – 8), [d/r-(5'C^1^A^2^X^3^G^4^Y^5^A^6^C^7^): X^3^ = A or C, Y^5^ = A or C; sequence variations: 2^2^
Jyoti Chattopadhyaya, Subhrangsu Chatterjee, Wimal Pathmasiri   +2 more
core   +1 more source

Biomimetic Nanoplatform for Targeted Glioblastoma Therapy via Concurrently Triggering GPX4/DHODH Mediated Ferroptosis

Advanced Science, EarlyView.
Considering the great challenge in Glioblastoma multiforme (GBM) treatment, the authors designed and synthesized a multifunctional nanoplatform that effectively induced ferroptosis by synergetically inhibiting intrinsic intrisinc anti‐ferroptosis proteins, GPX4 & DHODH, and realized excellent in vitro and in vivo anti‐GBM effect.
Guodong Ren, Xuewei Wang, Panpan Li, Hao Wu, Zhifei Bi, Qi Gao, Bolong Ma, Zixuan Tian, Jianfei Liu, Fuqiang Feng, Wen Liu, Lin Li, Chengwu Zhang   +12 more
wiley   +1 more source

Nucleotide-, chemotactic peptide- and phorbol ester-induced exocytosis in HL-60 leukemic cells [PDF]

, 1990
Undifferentiated and differentiated HL-60 leukemic cells possess nucleotide receptors which functionally couple to phospholipase C via pertussis toxin-sensitive guanine nucleotide-binding proteins (G-proteins).
Seifert, Roland, Wenzel-Seifert, Katharina   +1 more
core   +1 more source

Mitochondrial Enzymes Mimetic Ultrasmall Palladium Nanozymes Prevent Senescence and Neurodegeneration Through Metabolic Reprogramming

Advanced Science, EarlyView.
Simply constructed polyvinylpyrrolidone (PVP) modified palladium nanoparticles (PdP NPs) as cytochrome c oxidase (CcO) and superoxide dismutase (SOD) mimic are promising multifunctional nanoreactors to boost mitochondrial respiration chain function and refine homeostasis via regulation of mitochondrial dynamics and proteostasis sensor UPRmt, which ...
Wenshu Cong, Haiming Jing, Zinan Li, Wenjing Zhang, Nan Zhang, Yingqiu Xie, Shan Gao, Yuanyu Huang, Junyu Ning   +8 more
wiley   +1 more source

Discovery of a Potent Fluorescence Polarization Probe for Identifying USP1 Allosteric Inhibitors

Advanced Science, EarlyView.
This study presents the first ubiquitin‐specific protease 1 (USP1) allosteric fluoroprobe and fluorescence polarization assay, enabling the differentiation of allosteric and catalytic site inhibitors. Further, a novel class of tetrahydroisoquinoline‐based USP1 inhibitors is designed, with compound 14a (USP1 IC50 = 29.9 nM) showing strong selectivity ...
Jiawei Cheng, Peipei Wang, Pengfei Wang, Jiamin Wang, Baiyang Li, Daqing Fang, Jian He, Xiaobei Hu, Weijuan Kan, Yubo Zhou, Chunpu Li, Jia Li, Hong Liu   +12 more
wiley   +1 more source

Repair, abort, ignore? Strategies for dealing with UV damage [PDF]

, 2011
DNA repair is a prominent member of the nuclear transactions triad (replication, transcription, and repair). Sophisticated mechanisms govern the cellular process of decision-making (to repair or not to repair, to proceed with cell cycle or not and ...
Khalil, Hilal S., Tummala, Hemanth, Zhelev, Nikolai   +2 more
core   +3 more sources