Results 51 to 60 of about 4,319 (202)

Pyrazinoic Acid Inhibits the Bifunctional Enzyme (Rv2783) in Mycobacterium tuberculosis by Competing with tmRNA

open access: yesPathogens, 2019
Pyrazinamide (PZA) is a key drug for tuberculosis treatment. The active form of PZA, pyrazinoic acid (POA), appears to inhibit multiple targets in M. tuberculosis. Recently, the bifunctional enzyme Rv2783 was reported as a new target of POA. However, the
Lei He   +6 more
doaj   +1 more source

Identification of Genes Potentially Regulated by Human Polynucleotide Phosphorylase (hPNPaseold-35) Using Melanoma as a Model [PDF]

open access: yes, 2013
Human Polynucleotide Phosphorylase (hPNPaseold-35 or PNPT1) is an evolutionarily conserved 3′→5′ exoribonuclease implicated in the regulation of numerous physiological processes including maintenance of mitochondrial homeostasis, mtRNA import and aging ...
Bacolod, Manny D.   +4 more
core   +2 more sources

The exoribonuclease Polynucleotide Phosphorylase influences the virulence and stress responses of yersiniae and many other pathogens

open access: yesFrontiers in Cellular and Infection Microbiology, 2013
Microbes are incessantly challenged by both biotic and abiotic stressors threatening their existence. Therefore, bacterial pathogens must possess mechanisms to successfully subvert host immune defenses as well as overcome the stress associated with host ...
Jason A. Rosenzweig, Ashok K Chopra
doaj   +1 more source

Overexpression of a natural chloroplast-encoded antisense RNA in tobacco destabilizes 5S rRNA and retards plant growth [PDF]

open access: yes, 2010
Background The roles of non-coding RNAs in regulating gene expression have been extensively studied in both prokaryotes and eukaryotes, however few reports exist as to their roles in organellar gene regulation.
Amber M Hotto   +2 more
core   +1 more source

Localization of Components of the RNA-Degrading Machine in Bacillus subtilis [PDF]

open access: yes, 2016
In bacteria, the control of mRNA stability is crucial to allow rapid adaptation to changing conditions. In most bacteria, RNA degradation is catalyzed by the RNA degradosome, a protein complex composed of endo- and exoribonucleases, RNA helicases and ...
Jörg Stülke   +2 more
core   +2 more sources

Stable PNPase RNAi silencing: Its effect on the processing and adenylation of human mitochondrial RNA [PDF]

open access: yesRNA, 2007
Polynucleotide phosphorylase (PNPase) is a diverse enzyme, involved in RNA polyadenylation, degradation, and processing in prokaryotes and organelles. However, in human mitochondria, PNPase is located in the intermembrane space (IMS), where no mitochondrial RNA (mtRNA) is known to be present.
Shimyn, Slomovic, Gadi, Schuster
openaire   +2 more sources

Controlling the mitochondrial antisense – role of the SUV3-PNPase complex and its co-factor GRSF1 in mitochondrial RNA surveillance

open access: yesMolecular & Cellular Oncology, 2018
Transcription of the human mitochondrial genome produces a vast amount of non-coding antisense RNAs. These RNA species can form G-quadraplexes (G4), which affect their decay. We found that the mitochondrial degradosome, a complex of RNA helicase SUPV3L1 (
Zbigniew Pietras   +8 more
doaj   +1 more source

Selective RNA Processing and Stabilization are Multi‐Layer and Stoichiometric Regulators of Gene Expression in Escherichia coli

open access: yesAdvanced Science, 2023
Selective RNA processing and stabilization (SRPS) facilitates the differential expression of multiple genes in polycistronic operons. However, how the coordinated actions of SRPS‐related enzymes affect stoichiometric regulation remains unclear.
Daixi Liu   +5 more
doaj   +1 more source

Modulation of Neurogenesis through the Promotion of Energy Production Activity Is behind the Antidepressant-Like Effect of Colonial Green Alga, Botryococcus braunii [PDF]

open access: yes, 2017
Algae have been recognized as important resources providing functional components due to their capacity to exert beneficial effects on health. Therefore, there is increasing interest in investigating the biological activity of algae.
Demura Mikihide   +6 more
core   +1 more source

No Correlation Between Interferon Signaling and Cytosolic Mitochondrial DNA/RNA Leakage in Cultured Skin Fibroblasts of Patients With Mitochondrial Diseases

open access: yesEuropean Journal of Immunology, Volume 56, Issue 4, April 2026.
Investigation of IFN signaling in cultured skin fibroblasts from patients with genetically confirmed mitochondrial diseases of diverse origins revealed that altered IFN signaling is an inconsistent feature of these disorders. Cytosolic accumulation of mtDNA and mtRNA was variably detected and showed little correlation with ISG scores.
Manon Marchais   +11 more
wiley   +1 more source

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