Results 61 to 70 of about 10,578 (207)

Quantitative analysis of snoRNA association with pre-ribosomes and release of snR30 by Rok1 helicase [PDF]

, 2008
In yeast, three small nucleolar RNAs (snoRNAs) are essential for the processing of pre-ribosomal RNA—U3, U14 and snR30—whereas 72 non-essential snoRNAs direct site-specific modification of pre-rRNA. We applied a quantitative screen for alterations in the
Martin Kos, Markus T Bohnsack, Bohnsack, Markus T., Tollervey, David, David Tollervey, Kos, Martin, Bohnsack, Markus   +6 more
core   +1 more source

A Motor Function for the DEAD-Box RNA Helicase, Gemin3, in Drosophila

PLoS Genetics, 2008
The survival motor neuron (SMN) protein, the determining factor for spinal muscular atrophy (SMA), is complexed with a group of proteins in human cells. Gemin3 is the only RNA helicase in the SMN complex. Here, we report the identification of Drosophila melanogaster Gemin3 and investigate its function in vivo.
Cauchi, Ruben J., Davies, Kay E., Liu, Ji-Long   +2 more
openaire   +6 more sources

RNA Helicase DDX21 Controls CD4+ T Cell Proliferation and Promotes Inflammatory Bowel Disease via Translational Control

Advanced Science, EarlyView.
ABSTRACT Inflammatory bowel disease (IBD) is characterized by dysregulated T cell responses. RNA helicases, including DExD‐box helicase 21 (DDX21), are pivotal in RNA metabolism, but their role in T cell‐mediated pathology during IBD remains unclear. Here, we demonstrate that DDX21 expression in CD4+ T cells correlates with cell cycle and translation ...
Yujuan Zhang, Chen Kan, Xinhui Yang, Yajuan Hao, Xuemin Cai, Mei Yang, Qianqian Zhang, Zhengting Wang, Ning Jiang, Lei Wang, Hua‐Bing Li, Jing Zhou   +11 more
wiley   +1 more source

Coordinated function of cellular DEAD-box helicases in suppression of viral RNA recombination and maintenance of viral genome integrity. [PDF]

PLoS Pathogens, 2015
The intricate interactions between viruses and hosts include an evolutionary arms race and adaptation that is facilitated by the ability of RNA viruses to evolve rapidly due to high frequency mutations and genetic RNA recombination.
Chingkai Chuang, K Reddisiva Prasanth, Peter D Nagy   +2 more
doaj   +1 more source

The role of the DEAD‐box RNA helicase DDX3 in mRNA metabolism

WIREs RNA, 2013
AbstractDDX3 belongs to the DEAD‐box proteins, a large family of ATP‐dependent RNA helicases that participate in all aspects of RNA metabolism. Human DDX3 is a component of several messenger ribonucleoproteins that are found in the spliceosome, the export and the translation initiation machineries but also in different cytoplasmic mRNA granules.
Soto-Rifo, Ricardo, Ohlmann, Theophile
openaire   +4 more sources

Disruption of the SNRPF–DDX24–E2F4 Feedback Loop Uncouples Splicing and Transcriptional Regulation to Suppress Ovarian Cancer Progression

Advanced Science, EarlyView.
This study identifies SNRPF as a critical oncogenic driver in ovarian cancer. By regulating a self‐sustaining SNRPF–DDX24–E2F4 feedback loop through intron retention and nonsense‐mediated decay, SNRPF couples RNA splicing with transcriptional regulation to promote tumor progression.
Yingwei Li, Zhongshao Chen, Qianqian Gao, Yuehan Gao, Ning Yang   +4 more
wiley   +1 more source

A spliceosome intermediate with loosely associated tri-snRNP accumulates in the absence of Prp28 ATPase activity

Nature Communications, 2016
The assembly of the splicesome involves several distinct stages that require the sequential action of DExD/H-box RNA helicases. Here, the authors uncover a new intermediate, the pre-B complex, that accumulates in the presence of an inactive form of the ...
Carsten Boesler, Norbert Rigo, Maria M. Anokhina, Marcel J. Tauchert, Dmitry E. Agafonov, Berthold Kastner, Henning Urlaub, Ralf Ficner, Cindy L. Will, Reinhard Lührmann   +9 more
doaj   +1 more source

ATPase mechanism of the 5'-3' DNA helicase, RecD2: evidence for a pre-hydrolysis conformation change [PDF]

, 2013
The superfamily 1 helicase, RecD2, is a monomeric, bacterial enzyme with a role in DNA repair, but with 5'-3' activity unlike most enzymes from this superfamily. Rate constants were determined for steps within the ATPase cycle of RecD2 in the presence of
Webb, Martin R, Toseland, Christopher P.
core   +1 more source

The Host Cell Factor Phosphatase‐2A Subunit PR130 Restricts Replication of Herpes Simplex Virus Type‐1

Advanced Science, EarlyView.
Molecular, genetic, virological, and biochemical analysis in combination with global proteome and phosphoproteome profiling and functional assays were applied to study the role of PR130 in the context of HSV‐1 replication. The observations reveal that host‐intrinsic mechanisms regulate HSV‐1 replication and highlight PR130 as a susceptibility factor of
Johannes Jungwirth, Christoph F. Jacob, Alexandra Nguyen, Mandy Beyer, Andreas O. Mieland, Mario Dejung, Jia‐Xuan Chen, Walburgis Brenner, Christina Ehrhardt, Andreas Henke, Oliver H. Krämer   +10 more
wiley   +1 more source

Selective cell death in HIV-1-infected cells by DDX3 inhibitors leads to depletion of the inducible reservoir

Nature Communications, 2021
DEAD-box polypeptide 3 (DDX3) is a host protein belonging to the family of ATP-dependent RNA helicases. Here, the authors demonstrate that DDX3 inhibitors reverse HIV-1 latency and selectively induce cell death in HIV-1-infected cell lines, primary CD4 ...
Shringar Rao, Cynthia Lungu, Raquel Crespo, Thijs H. Steijaert, Alicja Gorska, Robert-Jan Palstra, Henrieke A. B. Prins, Wilfred van Ijcken, Yvonne M. Mueller, Jeroen J. A. van Kampen, Annelies Verbon, Peter D. Katsikis, Charles A. B. Boucher, Casper Rokx, Rob A. Gruters, Tokameh Mahmoudi   +15 more
doaj   +1 more source