Results 31 to 40 of about 3,502 (177)

Bacterial RNA Degradosomes: Molecular Machines under Tight Control [PDF]

Trends in Biochemical Sciences, 2020
Bacterial RNA degradosomes are multienzyme molecular machines that act as hubs for post-transcriptional regulation of gene expression. The ribonuclease activities of these complexes require tight regulation, as they are usually essential for cell survival while potentially destructive.
Tejada Arranz, Alejandro, de Crecy-Lagard, Valerie, de Reuse, Hilde   +2 more
openaire   +2 more sources

The DEAD-box RNA helicase RhlB is required for efficient RNA processing at low temperature in Caulobacter

Microbiology Spectrum, 2023
The RNA helicases from the DEAD-box family participate in several biochemical processes, with special relevance in the assembly of ribosome ribonucleoparticles and in RNA turnover as part of the multi-enzymatic RNA degradosome complex.
Hugo L. de Araújo, Beatriz A. Picinato, Alan P. R. Lorenzetti, Nisansala S. Muthunayake, I. W. Rathnayaka-Mudiyanselage, Naara M. dos Santos, Jared Schrader, Tie Koide, Marilis V. Marques   +8 more
doaj   +1 more source

Analysis of the natively unstructured RNA/protein-recognition core in the Escherichia coli RNA degradosome and its interactions with regulatory RNA/Hfq complexes. [PDF]

Nucleic Acids Res, 2018
Bruce HA, Du D, Matak-Vinkovic D, Bandyra KJ, Broadhurst RW, Martin E, Sobott F, Shkumatov AV, Luisi BF.   +8 more
europepmc   +2 more sources

Human FASTK preferentially binds single-stranded and G-rich RNA. [PDF]

FEBS J
Although FASTK is known to play a role in mRNA biology, the mechanism through which it recognizes RNA has yet to be unraveled. Here, we used purified human FASTK to characterize its RNA‐binding properties in vitro. We found that FASTK prefers ssRNA oligonucleotides containing guanines with the potential to form G‐quadruplexes and binds robustly to any ...
Dawidziak DM, Dzadz DA, Kuska MI, Kanavalli M, Klimecka MM, Merski M, Bandyra KJ, Górna MW.   +7 more
europepmc   +2 more sources

Moonlighting in Bacillus subtilis: The Small Proteins SR1P and SR7P Regulate the Moonlighting Activity of Glyceraldehyde 3-Phosphate Dehydrogenase A (GapA) and Enolase in RNA Degradation

Microorganisms, 2021
Moonlighting proteins are proteins with more than one function. During the past 25 years, they have been found to be rather widespread in bacteria. In Bacillus subtilis, moonlighting has been disclosed to occur via DNA, protein or RNA binding or protein ...
Inam Ul Haq, Sabine Brantl
doaj   +1 more source

α-Proteobacterial RNA Degradosomes Assemble Liquid-Liquid Phase-Separated RNP Bodies [PDF]

Molecular Cell, 2018
Ribonucleoprotein (RNP) granules play an important role in organizing eukaryotic mRNA metabolism via liquid-liquid phase separation (LLPS) of mRNA decay factors into membrane-less organelles in the cytoplasm. Here we show that the bacterium Caulobacter crescentus Ribonuclease (RNase) E assembles RNP LLPS condensates that we term bacterial RNP-bodies ...
Nadra, Al-Husini, Dylan T, Tomares, Obaidah, Bitar, W Seth, Childers, Jared M, Schrader   +4 more
openaire   +3 more sources

The ribonuclease E regulator RebA is essential for diazotrophic growth in the cyanobacterium <i>Anabaena</i> PCC 7120. [PDF]

mLife
Abstract Ribonuclease E (RNase E) is central to bacterial RNA metabolism. In cyanobacteria, its activity is inhibited by RebA, a key mechanism for controlling cell morphology. Here, we demonstrate that rebA is essential for diazotrophic growth of Anabaena PCC 7120, a filamentous cyanobacterium capable of forming heterocysts—specialized nitrogen‐fixing ...
Liu S, Wang Z, Lin G, Li W, Zeng X, Zhang JY, Zhang CC.   +6 more
europepmc   +2 more sources

Analysis of mRNA Decay Intermediates in Bacillus subtilis 3′ Exoribonuclease and RNA Helicase Mutant Strains

mBio, 2022
The Bacillus subtilis genome encodes four 3′ exoribonucleases: polynucleotide phosphorylase (PNPase), RNase R, RNase PH, and YhaM. Previous work showed that PNPase, encoded by the pnpA gene, is the major 3′ exonuclease involved in mRNA turnover; in a ...
Shivani Chhabra, Zachary F. Mandell, Bo Liu, Paul Babitzke, David H. Bechhofer   +4 more
doaj   +1 more source

RNA components of Escherichia coli degradosome: Evidence for rRNA decay [PDF]

Proceedings of the National Academy of Sciences, 1998
Recently, we found that a multicomponent ribonucleolytic degradosome complex formed around RNase E, a key mRNA-degrading and 9S RNA-processing enzyme, contains RNA in addition to its protein components. Herein we show that the RNA found in the degradosome consists primarily of rRNA fragments that have a range of distinctive sizes.
Bessarab, DA, Kaberdin, VR, Wei, CL, Liou, GG, Lin-Chao, S   +4 more
openaire   +2 more sources

A new yeast poly(A) polymerase complex involved in RNA quality control [PDF]

, 2005
Eukaryotic cells contain several unconventional poly(A) polymerases in addition to the canonical enzymes responsible for the synthesis of poly(A) tails of nuclear messenger RNA precursors.
Štěpánka Vaňáčová, Jeannette Wolf, Georges Martin, Diana Blank, Sabine Dettwiler, Arno Friedlein, Hanno Langen, Gérard Keith, Walter Keller, Phillip Zamore, Wahle, Minvielle-Sebastia, Zhao, Edmonds, Proudfoot, Zorio, Aravind, Holm, Martin, Preker, Martin, Martin, Bard, Read, Saitoh, Wang, Sadoff, Wang, Wang, Crittenden, Kwak, Keller, van Hoof, Kuai, Kadaba, Mitchell, O'Hara, Li, Cheng, Dreyfus, Inoue, Martin, Puig, Lingner, de la Cruz, Wang, Vijayraghavan, Anderson, Gerber, Dirheimer, Mitchell, Walowsky, Dannull, Amarasinghe, Castaño, Basavappa, Kushner, Symmons, Parker, Torchet, Fromont-Racine, Ohnacker, Dichtl, Fountoulakis, Wilm, Dirheimer, Keith, Senger, Dichtl, Christofori, Falquet, Rain   +71 more
core   +4 more sources