Results 41 to 50 of about 5,731 (204)

Structural and Molecular Basis for Resistance to Aminoglycoside Antibiotics by the Adenylyltransferase ANT(2″)-Ia

mBio, 2015
The aminoglycosides are highly effective broad-spectrum antimicrobial agents. However, their efficacy is diminished due to enzyme-mediated covalent modification, which reduces affinity of the drug for the target ribosome.
Georgina Cox, Peter J. Stogios, Alexei Savchenko, Gerard D. Wright   +3 more
doaj   +1 more source

Clinical Efficacy of Traditional Chinese Medicine Chaihu‐Guizhi‐Ganjiang Decoction Combined With Danggui‐Shaoyao‐San for the Treatment of Oligomenorrhea: A Prospective, Open‐Label Clinical Study

International Journal of Clinical Practice, Volume 2026, Issue 1, 2026.
Objective To assess the efficacy and safety of Chaihu‐Guizhi‐Ganjiang decoction (CGGJD) combined with Danggui‐Shaoyao‐San (DS) in oligomenorrhea treatment. Methods In this prospective open‐label trial, 35 oligomenorrhea patients (30–40 years) received CGGJD‐DS for 3 months, followed by a 2‐month follow‐up.
Mei Yu, Gui-Yan Liu, Wen-Xuan Zhou, Zhao-Hua Liu, Lian-Tao Li, Jin Chai   +5 more
wiley   +1 more source

Integrative Bioinformatics and Machine Learning Identify Novel Diagnostic Biomarkers and Molecular Mechanisms in Sjögren’s Syndrome

International Journal of Genomics, Volume 2026, Issue 1, 2026.
Background Sjögren’s syndrome (SS) is a chronic autoimmune disorder characterized by significant diagnostic challenges due to nonspecific symptoms and a lack of reliable biomarkers, often resulting in delayed diagnosis and suboptimal patient management.
Hua Xu, Yong Liu, Yuyin Song, Yifan Zheng, Haifeng Jing, Yanfei Gao, Depeng Zhou, Xiang Chi, Jia Chen, Zhengrui Li   +9 more
wiley   +1 more source

Theoretical Studies on Mechanism of Inactivation of Kanamycin A by 4′-O-Nucleotidyltransferase

Frontiers in Chemistry, 2019
This work is focused on mechanistic studies of the transfer of an adenylyl group (Adenoside-5′-monophosfate) from adenosine 5′-triphosphate (ATP) to a OH-4′ hydroxyl group of an antibiotic.
Sergio Martí, Agatha Bastida, Katarzyna Świderek   +2 more
doaj   +1 more source

Microbial profile of the appendix niche in acute appendicitis: a novel sampling approach

FEBS Open Bio, Volume 15, Issue 12, Page 2001-2020, December 2025.
This study utilized a novel sampling method, ERAT (i.e. endoscopic retrograde appendicitis treatment)‐guided lumen aspiration, to obtain samples from the appendix, and shotgun metagenomic sequencing was performed for in situ characterization of the appendix microbiome in patients with acute appendicitis.
Huimin Ma, Mingfei Wang, Yanhu Feng, Wanqi Zhang, Wenbo Wang, Yanfeng Xie, Guixiang Kong, Jie Feng, Pengfei Wang, Qi Wang, Xiaojun Huang   +10 more
wiley   +1 more source

A Eubacterial Origin for the Human tRNA Nucleotidyltransferase? [PDF]

Biological Chemistry, 2001
tRNA CCA-termini are generated and maintained by tRNA nucleotidyltransferases. Together with poly(A) polymerases and other enzymes they belong to the nucleotidyltransferase superfamily. However, sequence alignments within this family do not allow to distinguish between CCA-adding enzymes and poly(A) polymerases. Furthermore, due to the lack of sequence
Reichert, A. S., Thurlow, D. L., Mörl, M.   +2 more
openaire   +4 more sources

Characterization of Escherichia coli strains isolated from geese by detection of integron-mediated antimicrobial resistance

Journal of Global Antimicrobial Resistance, 2022
: Objectives: Current research shows that the resistance of Escherichia coli (E. coli) is mainly related to integron gene cassettes. To assess the resistance of E. coli of goose origin and the carriage of its integron genes in four farms in Heilongjiang
Wanying Sun, Dongyang Wang, Shuang Yan, Yuan Xue   +3 more
doaj   +1 more source

The Role and Therapeutic Potential of the cGAS‐STING Signaling Pathway in Alzheimer's Disease

Brain and Behavior, Volume 15, Issue 12, December 2025.
This work reveals the relationship between the cGAS‐STING signaling pathway and the pathological mechanisms of Alzheimer's disease.The role of the cGAS‐STING signaling pathway in AD pathology. AD leads to the production of neutrophil extracellular traps (NETs), endoplasmic reticulum (ER) stress, and the release of mitochondrial DNA (mtDNA) and nuclear ...
Xue Li, Wei Gao, Qiuyan Ye, Honglin Li
wiley   +1 more source

Aminoglycoside-4'-nucleotidyltransferase from Bacillus brevis.

Agricultural and Biological Chemistry, 1980
The existence of aminoglycoside-4′-nucleotidyltransferase [AAD(4′)] was demonstrated in the cell-free extract of B. brevis. This enzyme was purified about 100-fold over the cell-free extract by column chromatography using DEAE-cellulose and affinity chromatography using butirosin A-Sepharose 4B.AAD(4′) of B. brevis catalyzed the transfer of nucleotides
Hideo Shirafuji, Makoto Kida, Ikuo Nogami, Masahiko Yoneda   +3 more
openaire   +2 more sources

tRNA‐nucleotidyltransferases: Highly unusual RNA polymerases with vital functions [PDF]

FEBS Letters, 2009
tRNA‐nucleotidyltransferases are fascinating and unusual RNA polymerases responsible for the synthesis of the nucleotide triplet CCA at the 3′‐terminus of tRNAs. As this CCA end represents an essential functional element for aminoacylation and translation, these polymerases (CCA‐adding enzymes) are of vital importance in all organisms.
Vörtler, Stefan, Mörl, Mario
openaire   +2 more sources