Results 91 to 100 of about 326,612 (309)

A SUMO E3 ligase promotes long non-coding RNA transcription to regulate small RNA-directed DNA elimination

eLife
Small RNAs target their complementary chromatin regions for gene silencing through nascent long non-coding RNAs (lncRNAs). In the ciliated protozoan Tetrahymena, the interaction between Piwi-associated small RNAs (scnRNAs) and the nascent lncRNA ...
Salman Shehzada, Tomoko Noto, Julie Saksouk, Kazufumi Mochizuki   +3 more
doaj   +1 more source

Genetic and structural study of DNA-directed RNA polymerase II of Trypanosoma brucei, towards the designing of novel antiparasitic agents [PDF]

PeerJ, 2017
Trypanosoma brucei brucei (TBB) belongs to the unicellular parasitic protozoa organisms, specifically to the Trypanosoma genus of the Trypanosomatidae class.
Louis Papageorgiou, Vasileios Megalooikonomou, Dimitrios Vlachakis   +2 more
doaj   +2 more sources

Site-directed mutagenesis of the proposed catalytic amino acids of the Sindbis virus capsid protein autoprotease [PDF]

, 1990
The structural proteins of Sindbis virus are translated as a polyprotein precursor that is cleaved upon translation. The capsid protein is postulated to be a serine protease that releases itself from the N terminus of the nascent polyprotein by ...
Hahn, Chang S., Strauss, James H.
core  

A model for transition of 5 '-nuclease domain of DNA polymerase I from inert to active modes [PDF]

, 2011
Bacteria contain DNA polymerase I (PolI), a single polypeptide chain consisting of similar to 930 residues, possessing DNA-dependent DNA polymerase, 3'-5' proofreading and 5'-3' exonuclease (also known as flap endonuclease) activities.
A Díaz, B Shen, C Orlando, CJ Bornarth, CM Joyce, CW Gardiner, DL Ho, E Delagoutte, H Risken, IV Kutyavin, Janine Santos, JJ Harrington, Jon R. Sayers, JR Sayers, JR Sayers, JR Sayers, K Datta, K Makiela-Dzbenska, KL Nakamaye, L Zheng, L Zietlow, LM Allen, M Imai, MR Lieber, MRG Hodskinson, P Robins, P Setlow, P Xie, P Xie, P Xie, PD Gutman, PG de Gennes, PH Patel, Ping Xie, PM Holland, PM Kampmeyer, RC Lundquist, RL Honeycutt, RM Turner, S Fukushima, SJ Garforth, TA Ceska, UK Urs, V Lyamichev, V Lyamichev, WS Kelley, Y Kim, Y Kurosawa, Y Nagata, Y Xu, Z Bu   +50 more
core   +4 more sources

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source

A conserved Pol II elongator SPT6L mediates Pol V transcription to regulate RNA-directed DNA methylation in Arabidopsis

Nature Communications
In plants, the plant-specific RNA polymerase V (Pol V) transcripts non-coding RNAs and provides a docking platform for the association of accessory proteins in the RNA-directed DNA methylation (RdDM) pathway.
Yujuan Liu, Jie Shu, Zhi Zhang, Ning Ding, Jinyuan Liu, Jun Liu, Yuhai Cui, Changhu Wang, Chen Chen   +8 more
doaj   +1 more source

Hippo pathway at the crossroads of stemness and therapeutic resistance in breast cancer

Molecular Oncology, EarlyView.
Dysregulation of the Hippo pathway drives nuclear accumulation of YAP/TAZ, activating stemness‐related transcriptional programs that sustain breast cancer stemness and fuel therapeutic resistance across subtypes, underscoring Hippo signaling as a targetable vulnerability. Figure created and edited with BioRender.com.
Giulia Schiavoni, Antonella Palmese, Stefano Scalera, Laura Cipriani, Davide Mascolo, Patrizia Vici, Teresa Arcuri, Lorena Filomeno, Eriseld Krasniqi, Giovanni Blandino, Giulia Bon, Marcello Maugeri‐Saccà   +11 more
wiley   +1 more source

tRNATrp as primer for RNA-directed DNA polymerase: structural determinants of function.

Journal of Biological Chemistry, 1979
The specific interactions between the RNA-directed DNA polymerase of avian oncornavirus and the tRNATrp primer required for initiation of viral DNA synthesis in vitro were examined. Two distinct interactions, stable binding of the tRNATrp to the enzyme and initiation of viral DNA synthesis by the enzyme with tRNATrp as primer, were characterized as to ...
B, Cordell, R, Swanstrom, H M, Goodman, J M, Bishop   +3 more
openaire   +2 more sources

CCDC80 suppresses high‐grade serous ovarian cancer migration via negative regulation of B7‐H3

Molecular Oncology, EarlyView.
PAX8 is a lineage‐specific master regulator of transcription in high‐grade serous ovarian cancer (HGSC) progression. We show for the first time that PAX8 facilitates proliferation and metastasis by repressing the cell autonomous tumor suppressor CCDC80 and inducing B7‐H3 expression.
Aya Saleh, Nitzan Medina‐Itzhaki, Milena Chekov, Eden Gal‐Swisa, Roba Gabesh‐Wahabi, Inbar Savyon, Inna Naroditsky, Hilary A. Kenny, Basem Fares, Lina Korsensky, Einav Girsh, Liron Berger, Ruth Perets   +12 more
wiley   +1 more source