Results 41 to 50 of about 249,842 (263)

Investigation of Multi-Subunit Mycobacterium tuberculosis DNA-Directed RNA Polymerase and Its Rifampicin Resistant Mutants

International Journal of Molecular Sciences, 2023
Emerging Mycobacterium tuberculosis (Mtb) resistant strains have continued to limit the efficacies of existing antitubercular therapies. More specifically, mutations in the RNA replicative machinery of Mtb, RNA polymerase (RNAP), have been widely linked to rifampicin (RIF) resistance, which has led to therapeutic failures in many clinical cases ...
Mokgerwa Zacharia Monama, Fisayo Olotu, Özlem Tastan Bishop   +2 more
openaire   +2 more sources

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source

The Role OF DNA Polymerases in Carcinogenesis

Majallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Qum, 2016
Background and Objectives: The major role of various types of DNA polymerases is genome replication. However, DNA polymerases are also necessary to establish the accuracy, efficiency of replication, repairing process, and consequently decrease in ...
Zahra Aghelan, Mojtaba Panjehpour
doaj  

A simple and economical site-directed mutagenesis method for large plasmids by direct transformation of two overlapping PCR fragments

BioTechniques, 2022
Despite the development of various methods and commercial kits, site-directed mutagenesis of large plasmids remains a challenge in many laboratories.
Zhibo Yang, Zan Chen, Yueping Zhang
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

DNA-directed termination of mammalian RNA polymerase II

Genes & Development
ABSTRACT The best-studied mechanism of eukaryotic RNA polymerase II (RNAPII) transcriptional termination involves polyadenylation site-directed cleavage of the nascent RNA. The RNAPII-associated cleavage product is then degraded by XRN2, dislodging RNAPII from the DNA template.
Davidson, Lee, Rouvière, Jérôme O.; id_orcid 0000-0002-0269-1971, Sousa-Luís, Rui, Nojima, Takayuki, Proudfoot, Nicholas J., Jensen, Torben Heick; id_orcid 0000-0001-5127-1239, West, Steven   +6 more
openaire   +3 more sources

Mode of inhibition of HIV reverse transcriptase by 2-hexaprenylhydroquinone, a novel general inhibitor of RNA-and DNA-directed DNA polymerases [PDF]

Biochemical Journal, 1997
A natural compound from the Red Sea sponge Ircinia sp., 2-hexaprenylhydroquinone (HPH), has been shown to be a general inhibitor of retroviral reverse transcriptases (from HIV-1, HIV-2 and murine leukaemia virus) as well as of cellular DNA polymerases (Escherichia coli DNA polymerase I, and DNA polymerases α and β).
S, Loya, A, Rudi, Y, Kashman, A, Hizi
openaire   +2 more sources

MND1 and PSMC3IP control PARP inhibitor sensitivity in mitotic cells

Cell Reports, 2023
Summary: The PSMC3IP-MND1 heterodimer promotes meiotic D loop formation before DNA strand exchange. In genome-scale CRISPR-Cas9 mutagenesis and interference screens in mitotic cells, depletion of PSMC3IP or MND1 causes sensitivity to poly (ADP-Ribose ...
Anabel Zelceski, Paola Francica, Lea Lingg, Merve Mutlu, Colin Stok, Martin Liptay, John Alexander, Joseph S. Baxter, Rachel Brough, Aditi Gulati, Syed Haider, Maya Raghunandan, Feifei Song, Sandhya Sridhar, Josep V. Forment, Mark J. O’Connor, Barry R. Davies, Marcel A.T.M. van Vugt, Dragomir B. Krastev, Stephen J. Pettitt, Andrew N.J. Tutt, Sven Rottenberg, Christopher J. Lord   +22 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source