Results 91 to 100 of about 52,861 (267)

A DNP‐Supported Solid‐State NMR Approach to Study Nucleic Acids In Situ Reveals Berberine‐Stabilized Hoogsteen Structures in Mitochondria

Angewandte Chemie, EarlyView.
Mitochondria are vital for energy production and rely on intricate nucleic acid structures to regulate gene expression. Using DNP‐ssNMR (dynamic nuclear polarization solid‐state NMR), we observed G‐quadruplex formation in intact mitochondria treated with berberine.
Michaela Dzurov Krafčíková, David Beriashvili, Salima Bahri, Menno Bergmeijer, Stuart C. Howes, Andrei Gurinov, Friedrich G. Förster, Gert E. Folkers, Marc Baldus   +8 more
wiley   +2 more sources

A 7-Deazaadenosylaziridine Cofactor for Sequence-Specific Labeling of DNA by the DNA Cytosine-C5 Methyltransferase M.HhaI

Molecules, 2015
DNA methyltransferases (MTases) catalyze the transfer of the activated methyl group of the cofactor S-adenosyl-l-methionine (AdoMet or SAM) to the exocyclic amino groups of adenine or cytosine or the C5 ring atom of cytosine within specific DNA sequences.
Falk Kunkel, Rudi Lurz, Elmar Weinhold
doaj   +1 more source

Cytosine-to-uracil deamination by SssI DNA methyltransferase. [PDF]

PLoS ONE, 2013
The prokaryotic DNA(cytosine-5)methyltransferase M.SssI shares the specificity of eukaryotic DNA methyltransferases (CG) and is an important model and experimental tool in the study of eukaryotic DNA methylation.
Ildikó Stier, Antal Kiss
doaj   +1 more source

Strand-biased cytosine deamination at the replication fork causes cytosine to thymine mutations in Escherichia coli

Proceedings of the National Academy of Sciences of the United States of America, 2016
Significance C:G to T:A mutations constitute the largest class of spontaneous base substitutions in all organisms. These mutations are thought to be a result of cytosine deaminations, but what promotes these deaminations is unclear.
A. Bhagwat, Weilong Hao, Jesse P Townes, Heewook Lee, Haixu Tang, P. Foster   +5 more
semanticscholar   +1 more source

Mannose‐Glycated Metal‐Phenolic Microcapsules Orchestrate Phenotype Switch of Macrophages for Boosting Tumor Immunotherapy

Advanced Science, EarlyView.
Immunomodulatory metal‐phenolic microcapsules (mMPMs) is developed in this study that leverages dopamine‐modified hyaluronic acid and FeIII assemble on mannose‐glycated bovine serum albumin microbubbles. mMPMs effectively promote macrophage internalization and M1 polarization, enhancing pro‐inflammatory responses.
Xin Tan, Renwang Sheng, Weikun Li, Yinghua Tao, Zonghao Liu, Ning Yang, Syeda Safia Hashmi, Feiling Feng, Fangzhou Liu, Liqin Ge   +9 more
wiley   +1 more source

A Method for Constructing Nucleosome Arrays with Spatially Defined Histone PTMs and DNA Damage

Angewandte Chemie, EarlyView.
This work advances methodology by addressing challenges in mimicking the complex in vivo spatial relationships of histone acetylation and DNA damage. The combination of an abiotic/enzymatic hybrid catalyst system (ABEHCS) and the plug‐and‐play method has constituted a versatile platform to construct nucleosome arrays with precise histone acetylation ...
Ziyun Liu, Siqi Xi, Lauren A. McGregor, Kenzo Yamatsugu, Shigehiro A. Kawashima, Jonathan T. Sczepanski, Motomu Kanai   +6 more
wiley   +2 more sources

HPLC-UV, MALDI-TOF-MS and ESI-MS/MS analysis of the mechlorethamine DNA crosslink at a cytosine-cytosine mismatch pair. [PDF]

PLoS ONE, 2011
Mechlorethamine [ClCH(2)CH(2)N(CH(3))CH(2)CH(2)Cl], a nitrogen mustard alkylating agent, has been proven to form a DNA interstrand crosslink at a cytosine-cytosine (C-C) mismatch pair using gel electrophoresis.
Pornchai Rojsitthisak, Nutthapon Jongaroonngamsang, Rebecca M Romero, Ian S Haworth   +3 more
doaj   +1 more source

Functional Upregulation of the DNA Cytosine Deaminase APOBEC3B by Polyomaviruses

Journal of Virology, 2016
The APOBEC3 family of DNA cytosine deaminases has important roles in innate immunity and cancer. It is unclear how DNA tumor viruses regulate these enzymes and how these interactions, in turn, impact the integrity of both the viral and cellular genomes ...
Brandy Verhalen, G. Starrett, R. Harris, M. Jiang   +3 more
semanticscholar   +1 more source

Targeted Delivery of α‐ketoglutarate to Macrophages in Bone: A Novel Therapeutic Strategy for Improving Fracture Healing in Type 2 Diabetes

Advanced Science, EarlyView.
The study reveals that glutaminolysis in macrophages is inhibited under type 2 diabetes mellitus (T2DM) conditions, which impedes fracture healing by reducing bone morphogenetic protein 2 (BMP2) production through increased cytosine methylation on the promoter.
Jing Wang, Jiahao Cao, Siqi Zhang, Hongli Chen, Xuebing Yu, Xinli Wang, Tianji Wang, Wei Cao, Wengang Dong, Xinsen Lin, Jia Li, Wei Lei, Yafei Feng   +12 more
wiley   +1 more source

A cytotoxic survey on 2‐amino‐1H‐imidazol based synthetic marine sponge alkaloid analogues

Drug Development Research, Volume 83, Issue 8, Page 1906-1922, December 2022., 2022
Abstract Here, we describe the synthesis and biologic activity evaluation of 20 novel synthetic marine sponge alkaloid analogues with 2‐amino‐1H‐imidazol (2‐AI) core. Cytotoxicity was tested on murine 4T1 breast cancer, A549 human lung cancer, and HL‐60 human myeloid leukemia cells by the resazurin assay.
Nikolett Gémes, Zsófia Makra, Patrícia Neuperger, Enikő Szabó, József Á. Balog, Lili Borbála Flink, Beáta Kari, László Hackler Jr, László. G. Puskás, Iván Kanizsai, Gábor J. Szebeni   +10 more
wiley   +1 more source