Results 81 to 90 of about 1,799,207 (345)

Description of Pseudobenedeniella johnstoni sp. n. (Monogenea: Capsalidae) from the gills of Antarctic black rockcod, Notothenia coriiceps Richardson in coastal waters of West Antarctica

Helminthologia
Morphological and metrical analyses of monogeneans from the gills of Antarctic rockcod Notothenia coriiceps revealed the presence of a new species, Pseudobenedeniella johnstoni sp. n. Fresh specimens of monogeneans collected from N.
Rubtsova N. Y., Chaudhary A., Glotov S., Kuzmina T. A.   +3 more
doaj   +1 more source

Structural basis of ribosomal RNA transcription regulation

Nature Communications, 2021
Ribosomal RNA (rRNA) expression is regulated at the initiation stage of RNA synthesis. Here, the authors report cryo-EM structures of E. coli RNA polymerase and rRNA promoter complex with DksA/ppGpp on the way to open complex formation, identifying key ...
Yeonoh Shin, M. Zuhaib Qayyum, Danil Pupov, Daria Esyunina, Andrey Kulbachinskiy, Katsuhiko S. Murakami   +5 more
doaj   +1 more source

Effects of alcohol and PARP inhibition on RNA ribosomal engagement in cortical excitatory neurons

Frontiers in Molecular Neuroscience, 2023
We report on the effects of ethanol (EtOH) and Poly (ADP-ribose) polymerase (PARP) inhibition on RNA ribosomal engagement, as a proxy for protein translation, in prefrontal cortical (PFC) pyramidal neurons.
Harish R. Krishnan, Gian Paolo Vallerini, Hannah E. Gavin, Marina Guizzetti, Marina Guizzetti, Hooriyah S. Rizavi, Hooriyah S. Rizavi, David P. Gavin, David P. Gavin, Rajiv P. Sharma, Rajiv P. Sharma   +10 more
doaj   +1 more source

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

Molecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova, Michele Montrone, Uday Rangaswamy, Francesco Diversi, Irene Schiavo, Denise Ferrarini, Roberta Di Florio, Irene Longo, Michele Coscia, Nicola Zamboni, Giorgia Demontis, Lisa Veghini, Vincenzo Corbo, Remo Sanges, Paul Heppenstall   +14 more
wiley   +1 more source

Placeholder factors in ribosome biogenesis: please, pave my way

Microbial Cell, 2017
The synthesis of cytoplasmic eukaryotic ribosomes is an extraordinarily energy-demanding cellular activity that occurs progressively from the nucleolus to the cytoplasm.
Francisco J. Espinar-Marchena, Reyes Babiano, Jesús de la Cruz   +2 more
doaj   +1 more source

Three Ribosomal Operons of Escherichia coli Contain Genes Encoding Small RNAs That Interact With Hfq and CsrA in vitro

Frontiers in Microbiology, 2021
Three out of the seven ribosomal RNA operons in Escherichia coli end in dual terminator structures. Between the two terminators of each operon is a short sequence that we report here to be an sRNA gene, transcribed as part of the ribosomal RNA primary ...
Thomas Søndergaard Stenum, Mette Kongstad, Erik Holmqvist, Birgitte Kallipolitis, Sine Lo Svenningsen, Michael Askvad Sørensen   +5 more
doaj   +1 more source

The human RNA helicase DHX37 is required for release of the U3 snoRNP from pre-ribosomal particles

RNA Biology, 2018
Ribosome synthesis is an essential cellular process, and perturbation of human ribosome production is linked to cancer and genetic diseases termed ribosomopathies. During their assembly, pre-ribosomal particles undergo numerous structural rearrangements,
P. Choudhury, Philipp Hackert, Indira Memet, K. Sloan, M. Bohnsack   +4 more
semanticscholar   +1 more source

Glutathione reductase-catalyzed cascade of redox reactions to bioactivate potent antimalarial 1,4-naphthoquinones--a new strategy to combat malarial parasites. [PDF]

, 2011
Our work on targeting redox equilibria of malarial parasites propagating in red blood cells has led to the selection of six 1,4-naphthoquinones, which are active at nanomolar concentrations against the human pathogen Plasmodium falciparum in culture and ...
Bauer, Holger, Brückner, Margit, Davioud-Charvet, Elisabeth, Deregnaucourt, Christiane, Jannack, Beate, Johann, Laure, Lanfranchi, Don Antoine, Lanzer, Michael, Müller, Tobias, Sanchez, Cecilia, Schirmer, R Heiner, Schrével, Joseph, Yardley, Vanessa   +12 more
core   +2 more sources

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source

Domain associated with zinc fingers‐containing NF90‐NF45 complex inhibits m6A modification of primary microRNA by suppressing METTL3/14 activity

FEBS Open Bio, EarlyView.
NF90–NF45 functions as a negative regulator of methyltransferase‐like 3/14 (METTL3/14)‐mediated N6‐methyladenosine (m6A) modification on primary microRNAs (pri‐miRNAs). NF90–NF45 binds to anti‐oncogenic pri‐miRNAs and inhibits their m6A modification, thereby suppressing the biogenesis of anti‐oncogenic miRNAs.
Takuma Higuchi, Shunsuke Morioka, Keiko Morisawa, Kazutsugu Matsukawa, Shingo Ashida, Takeshi Suzuki, Shuji Sakamoto   +6 more
wiley   +1 more source