Results 41 to 50 of about 310,443 (357)

Mechanisms of the RNA helicases DDX42 and DDX46 in human U2 snRNP assembly

Nature Communications, 2023
The U2 snRNP recognizes the intron during spliceosome assembly. Here the authors report the high-resolution structures of two assembly precursors of human U2 snRNP and reveal that the RNA helicases DDX42 and DDX46 are mutually exclusive in terms of SF3B1-
Fenghua Yang, Tong Bian, Xiechao Zhan, Zhe Chen, Zhihan Xing, Nicolas A. Larsen, Xiaofeng Zhang, Yigong Shi   +7 more
doaj   +1 more source

Precursors to small molecular weight RNA components [PDF]

FEBS Letters, 1975
Metabolically long-lived RNA components such as tRNA and rRNA are formed from unstable larger precursors [ 1,2] . Baby Hamster Kidney cells (BHK-2 1 cells) contain four small mol. wt RNA components (sm RNA) with a metabolic half-life of 5-7 days [3] . The size of these components (D, C, A, and L) was determined to be from 145 to 235 nucleotides based ...
Sune Frederiksen, Per Hellung-Larsen
openaire   +3 more sources

Molecular Genetics of T Cell Development [PDF]

, 2005
T cell development is guided by a complex set of transcription factors that act recursively, in different combinations, at each of the developmental choice points from T-lineage specification to peripheral T cell specialization. This review describes the
Aifantis I, Allen JD, Alvarez JD, Anderson MK, Barndt R, Cooper CL, Durum SK, Fisher RC, Gadina M, Hsiang YH, Hsiang YH, Ishiguro A, Ivanov V, Izon DJ, Kishi H, Kohu K, Mao C, McCracken S, McKercher SR, Mullen AC, Nerlov C, Ohteki T, Rosenbauer F, Rothenberg EV, Schilham MW, Sikes ML, Spain LM, Zhang D-H   +27 more
core   +1 more source

Export of piRNA precursors by EJC triggers assembly of cytoplasmic Yb-body in Drosophila

Nature Communications, 2016
In Drosophila ovarian follicle cells, piRNAs generated from RNA precursors are processed in cytoplasmic Yb-bodies. The authors identify the exportin and the exon junction complexes as required to transfer precursors to cytoplasm.
Cynthia Dennis, Emilie Brasset, Arpita Sarkar, Chantal Vaury   +3 more
doaj   +1 more source

Structural basis of RNA polymerase I pre-initiation complex formation and promoter melting

Nature Communications, 2020
RNA polymerase I (Pol I) catalyses the transcription of ribosomal RNA precursors, and its transcription initiation mechanism differs from that of Pol II and Pol III.
Michael Pilsl, Christoph Engel
doaj   +1 more source

Attachment of the RNA degradosome to the bacterial inner cytoplasmic membrane prevents wasteful degradation of rRNA in ribosome assembly intermediates.

PLoS Biology, 2023
RNA processing and degradation shape the transcriptome by generating stable molecules that are necessary for translation (rRNA and tRNA) and by facilitating the turnover of mRNA, which is necessary for the posttranscriptional control of gene expression ...
Lydia Hadjeras, Marie Bouvier, Isabelle Canal, Leonora Poljak, Quentin Morin-Ogier, Carine Froment, Odile Burlet-Schlitz, Lina Hamouche, Laurence Girbal, Muriel Cocaign-Bousquet, Agamemnon J Carpousis   +10 more
doaj   +1 more source

Understanding the Effects of Trenbolone Acetate, Polyamine Precursors, and Polyamines on Proliferation, Protein Synthesis Rates, and the Abundance of Genes Involved in Myoblast Growth, Polyamine Biosynthesis, and Protein Synthesis in Murine Myoblasts

Biology, 2023
Research suggests that androgens increase skeletal muscle growth by modulating polyamine biosynthesis. As such, the objective of this study was to investigate effects of anabolic hormones, polyamine precursors, and polyamines relative to proliferation ...
Laura A. Motsinger, Lillian L. Okamoto, Nikole E. Ineck, Brynne A. Udy, Christopher L. Erickson, Youssef Harraq, Caleb C. Reichhardt, Gordon K. Murdoch, Kara Jean Thornton   +8 more
doaj   +1 more source

MicroRNA-like RNAs from the same miRNA precursors play a role in cassava chilling responses [PDF]

, 2017
MicroRNAs (miRNAs) are known to play important roles in various cellular processes and stress responses. MiRNAs can be identified by analyzing reads from high-throughput deep sequencing.
Chen, Xin, Peng, Ming, Xia, Jing, Zeng, Changying, Zhang, Weixiong, Zhou, Yufei   +5 more
core   +3 more sources

The structure of Rph, an exoribonuclease from Bacillus anthracis, at 1.7 angstrom resolution [PDF]

, 2008
Maturation of tRNA precursors into functional tRNA molecules requires trimming of the primary transcript at both the 5' and 3' ends. Cleavage of nucleotides from the 3' stem of tRNA precursors, releasing nucleotide diphosphates, is accomplished in ...
Blagova, Elena V., Fogg, Mark J., Levdikov, Vladimir M., Rawlings, Andrea E., Wilkinson, Anthony J., Wilson, Keith S.   +5 more
core   +2 more sources

Isolation of pigment cell specific genes in the sea urchin embryo by differential macroarray screening [PDF]

, 2003
New secondary mesenchyme specific genes, expressed exclusively in pigment cells, were isolated from sea urchin embryos using a differential screening of a macroarray cDNA library. The comparison was performed between mRNA populations of embryos having an
Calestani, Cristina, Davidson, Eric H., Rast, Jonathan P.   +2 more
core   +1 more source