Results 91 to 100 of about 181,495 (258)

A System of RNA Modifications and Biased Codon Use Controls Cellular Stress Response at the Level of Translation [PDF]

open access: yes, 2014
Cells respond to environmental stressors and xenobiotic exposures using regulatory networks to control gene expression, and there is an emerging appreciation for the role of numerous postsynthetic chemical modifications of DNA, RNA, and proteins in ...
Begley, Thomas J., Dedon, Peter C
core   +1 more source

CSN6 Promotes Pancreatic Cancer Progression and Gemcitabine Resistance via Antagonizing DCAF1‐Mediated Ubiquitination of NPM1

open access: yesAdvanced Science, Volume 13, Issue 1, 5 January 2026.
COP9 signalosome subunit 6 (CSN6) promotes the auto‐ubiquitination and degradation of DDB1‐CUL4 associated factor 1 (DCAF1), thereby antagonizing DCAF1‐mediated ubiquitination of Nucleophosmin (NPM1). This stabilization of NPM1 enhances the ribosome biogenesis process and the translation of specific gemcitabine‐resistance proteins, ultimately driving ...
Yijing Zhang   +14 more
wiley   +1 more source

Role of thioredoxin system in cell death caused by toxic compounds [PDF]

open access: yes, 2014
Thioredoxin systems, comprising Trx, TrxR and NADPH, are one of the major disulfide reductase systems, which is crucial in maintaining cellular redox balance in mammalian cells.
Zhang, Xu
core   +1 more source

Metabolism‐Regulating Nanomedicines for Cancer Therapy

open access: yesAdvanced NanoBiomed Research, Volume 6, Issue 1, January 2026.
This review highlights metabolism‐regulating nanomedicines designed to target glycolytic, lipid, amino acid, and nucleotide pathways in tumors. By incorporating metabolism‐regulating agents into versatile nanocarriers such as liposomes, micelles, dendrimers, and engineered bacteria, these platforms achieve targeted delivery, controlled release ...
Xiao Wu, Shiyi Geng, Jian Yang
wiley   +1 more source

Nitrogen-Centered Radicals Derived from Azidonucleosides

open access: yesMolecules
Azido-modified nucleosides have been extensively explored as substrates for click chemistry and the metabolic labeling of DNA and RNA. These compounds are also of interest as precursors for further synthetic elaboration and as therapeutic agents.
Yahaira Reyes   +2 more
doaj   +1 more source

Regulation of ribonucleotide reductase by Spd1 involves multiple mechanisms [PDF]

open access: yes, 2010
The correct levels of deoxyribonucleotide triphosphates and their relative abundance are important to maintain genomic integrity. Ribonucleotide reductase (RNR) regulation is complex and multifaceted.
Carr, Antony M   +13 more
core   +2 more sources

Electronic and Structural Heterogeneity in the Diiron Center of Sulerythrin: Insights From Hybrid QM/MM Calculations

open access: yesChemPhysChem, Volume 27, Issue 2, January 2026.
QM/MM modeling of Sulerythrin (SulE) identifies three electronic states of its diiron center, differing in protonation and bridging ligands. The results reconcile crystallographic heterogeneity and reveal how subtle electronic and structural changes govern non‐heme diiron enzyme reactivity.
Samah Moubarak, Maria Andrea Mroginski
wiley   +1 more source

Fumarate and nitrate reduction (FNR) dependent activation of the Escherichia coli anaerobic ribonucleotide reductase nrdDG promoter [PDF]

open access: yes, 2008
The nrdDG promoter regulates transcriptional expression of the anaerobic ribonucleotide reductase of Escherichia coli, an essential enzyme required to supply the building blocks for DNA synthesis.
Anaïs Panosa   +4 more
core   +2 more sources

The Anti-Sigma Factor MucA of Pseudomonas aeruginosa: Dramatic Differences of a mucA22 vs. a ΔmucA Mutant in Anaerobic Acidified Nitrite Sensitivity of Planktonic and Biofilm Bacteria in vitro and During Chronic Murine Lung Infection [PDF]

open access: yes, 2019
Mucoid mucA22 Pseudomonas aeruginosa (PA) is an opportunistic lung pathogen of cystic fibrosis (CF) and chronic obstructive pulmonary disease (COPD) patients that is highly sensitive to acidified nitrite (A-NO2-).
Hassett, Daniel J.   +14 more
core   +3 more sources

Characterisation of gene expression profiles of yeast cells expressing BRCA1 missense variants [PDF]

open access: yes, 2009
Germline mutations in breast cancer susceptibility gene 1 (BRCA1) confer high risk of developing breast and ovarian cancers. Even though most BRCA1 cancer-predisposing mutations produce a non-functional truncated protein, 5-10% of them cause single amino
Caligo, Maria Adelaide   +9 more
core   +1 more source

Home - About - Disclaimer - Privacy