Results 51 to 60 of about 950,582 (330)

Specialization of RNA Polymerase I in Comparison to Other Nuclear RNA Polymerases of Saccharomyces cerevisiae.

Methods Mol Biol, 2022
AbstractIn archaea and bacteria the major classes of RNAs are synthesized by one DNA-dependent RNA polymerase (RNAP). In contrast, most eukaryotes have three highly specialized RNAPs to transcribe the nuclear genome. RNAP I synthesizes almost exclusively ribosomal (r)RNA, RNAP II synthesizes mRNA as well as many noncoding RNAs involved in RNA ...
Merkl PE, Schächner C, Pilsl M, Schwank K, Schmid C, Längst G, Milkereit P, Griesenbeck J, Tschochner H.   +8 more
europepmc   +3 more sources

Mechanisms of backtrack recovery by RNA polymerases I and II [PDF]

Proceedings of the National Academy of Sciences, 2016
Significance Transcription of the genetic information from DNA into RNA is the central process of gene expression, and it is performed by enzymes called RNA polymerases (Pol). Transcription is interspersed with a proofreading mechanism called backtracking, during which the polymerase moves backward on the DNA template and displaces the RNA 3′
Eric A. Galburt, Édgar Roldán, Patrick Cramer, Christoph Engel, Marcus Jahnel, Stephan W. Grill, Stephan W. Grill, Ana Lisica   +7 more
openaire   +6 more sources

Identification of SL addition trans-splicing acceptor sites in the internal transcribed spacer I region of pre-rRNA in Leishmania (Leishmania) amazonensis

Memorias do Instituto Oswaldo Cruz, 2012
Trypanosomatidae is a family of early branching eukaryotes harbouring a distinctive repertoire of gene expression strategies. Functional mature messenger RNA is generated via the trans-splicing and polyadenylation processing of constitutively transcribed
Mario Gustavo Mayer, Lucile Maria Floeter-Winter   +1 more
doaj   +1 more source

RNA polymerase II stalling promotes nucleosome occlusion and pTEFb recruitment to drive immortalization by Epstein-Barr virus [PDF]

, 2011
Epstein-Barr virus (EBV) immortalizes resting B-cells and is a key etiologic agent in the development of numerous cancers. The essential EBV-encoded protein EBNA 2 activates the viral C promoter (Cp) producing a message of ~120 kb that is differentially ...
A Bakos, A Bell, A Dey, A Lin, AI Bell, B Kempkes, B Sugden, BM Peterlin, C Lee, CD Gregory, CF Bourgeois, CH Wu, CH Wu, D Ivanov, DA Gilchrist, DC Hargreaves, DS Gilmour, DS Gilmour, DY Wu, DY Wu, E Johannsen, E Klein, EA Abbate, G Kelly, G Laux, H Gross, H Kirby, Helen M. Webb, I Tempera, J You, JH Yik, JI Cohen, K Fujinaga, KD Robertson, KD Robertson, L Waltzer, L Wang, M Ottinger, M Woisetschlaeger, M Woisetschlaeger, Michelle J. West, MJ West, MK Jang, N Alazard, N Kaplan, NA Brown, NF Marshall, NP Gomes, P Filippakopoulos, Paul M. Lieberman, R Tierney, Richard D. Palermo, S Egloff, S Egloff, S Swaminathan, SH Chao, SJ Bark-Jones, SR Grossman, SY Wu, T Fujita, T Fujita, T Henkel, T Wada, T Wada, U Zimber-Strobl, VT Nguyen, W Lucchesi, W Yue, W Yue, W Yue, W Zhu, X Tong, X Tong, X Tong, YK Kim, Z Yang   +75 more
core   +3 more sources

The Phage-Encoded N-Acetyltransferase Rac Mediates Inactivation of Pseudomonas aeruginosa Transcription by Cleavage of the RNA Polymerase Alpha Subunit

Viruses, 2020
In this study, we describe the biological function of the phage-encoded protein RNA polymerase alpha subunit cleavage protein (Rac), a predicted Gcn5-related acetyltransferase encoded by phiKMV-like viruses.
Pieter-Jan Ceyssens, Jeroen De Smet, Jeroen Wagemans, Natalia Akulenko, Evgeny Klimuk, Subray Hedge, Marleen Voet, Hanne Hendrix, Jan Paeshuyse, Bart Landuyt, Hua Xu, John Blanchard, Konstantin Severinov, Rob Lavigne   +13 more
doaj   +1 more source

Estrogen-induced modification of uterine RNA polymerase activity depends on localization of the estrogen receptor [PDF]

Archives of Biological Sciences, 2007
The aim of this study was to examine the effects of estradiol (E2) on activity of RNA polymerase I and RNA polymerase II in uterine nuclei of ovariectomized (OVX) female rats.
Žakula Zorica, Isenović Esma R., Stojiljković Mojca, Korićanac G., Tepavčević Snežana, Ribarac-Stepić Nevena   +5 more
doaj   +1 more source

Impact of template backbone heterogeneity on RNA polymerase II transcription. [PDF]

, 2014
Variations in the sugar component (ribose or deoxyribose) and the nature of the phosphodiester linkage (3'-5' or 2'-5' orientation) have been a challenge for genetic information transfer from the very beginning of evolution.
Chong, Jenny, Huang, Xuhui, Wang, Dong, Wang, Wei, Xu, Liang, Zhang, Lu   +5 more
core   +1 more source

Transcription-translation coupling: direct interactions of RNA polymerase with ribosomes and ribosomal subunits. [PDF]

, 2017
In prokaryotes, RNA polymerase and ribosomes can bind concurrently to the same RNA transcript, leading to the functional coupling of transcription and translation.
Blaha, Gregor M, Conn, Adam B, Diggs, Stephen, Fan, Haitian, Gamper, Howard B, Hahm, Joseph, Hou, Ya-Ming, O'Leary, Seán E, Wang, Yinsheng, Williams, Preston B   +9 more
core   +1 more source

Structural Basis of RNA Polymerase I Transcription Initiation [PDF]

Cell, 2017
Transcription initiation at the ribosomal RNA promoter requires RNA polymerase (Pol) I and the initiation factors Rrn3 and core factor (CF). Here, we combine X-ray crystallography and cryo-electron microscopy (cryo-EM) to obtain a molecular model for basal Pol I initiation.
Engel, Christoph, Gubbey, Tobias, Neyer, Simon, Sainsbury, Sarah, Oberthuer, Christiane, Baejen, Carlo, Bernecky, Carrie, Cramer, Patrick   +7 more
openaire   +5 more sources

A stepwise emergence of evolution in the RNA world

FEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source