Results 51 to 60 of about 108,983 (200)

Ribonucleolytic resection is required for repair of strand displaced nonhomologous end-joining intermediates [PDF]

open access: yes, 2013
Nonhomologous end-joining (NHEJ) pathways repair DNA double-strand breaks (DSBs) in eukaryotes and many prokaryotes, although it is not reported to operate in the third domain of life, archaea. Here, we describe a complete NHEJ complex, consisting of DNA
Bartlett, Edward   +2 more
core   +1 more source

K–8 Classroom Self-Collection Using XpressCollect Nasal Swab: A Usability and Efficacy Study

open access: yesDiagnostics, 2022
This study demonstrates that students in kindergarten through eighth grade can use the XpressCollect nasal swab to self-collect a specimen under the guidance of a teacher. This phased study was conducted with parents, teachers, and students. Phases 1 and
Kate Cox   +6 more
doaj   +1 more source

Functional plasticity of antibacterial EndoU toxins. [PDF]

open access: yes, 2018
Bacteria use several different secretion systems to deliver toxic EndoU ribonucleases into neighboring cells. Here, we present the first structure of a prokaryotic EndoU toxin in complex with its cognate immunity protein.
Eschenfeldt, William H   +11 more
core   +1 more source

Expression, purification and structural analysis of the Pyrococcus abyssi RNA binding protein PAB1135

open access: yesBMC Research Notes, 2010
Background The gene coding for the uncharacterized protein PAB1135 in the archaeon Pyrococcus abyssi is in the same operon as the ribonuclease P (RNase P) subunit Rpp30.
Ramos Celso RR   +3 more
doaj   +1 more source

Decrease in gyrase A protein expression in _E. coli_ cells inhibited by antisense ribozymes [PDF]

open access: yes, 2008
RNase P complexed with external guide sequence (EGS) represents a novel nucleic-acid-based gene interference approach to modulate gene expression. Nucleic acid-based gene interference technologies represent promising strategies for specific inhibition of
Malathi Raghunathan   +1 more
core   +1 more source

BLISTER-regulated vegetative growth is dependent on the protein kinase domain of ER stress modulator IRE1A in Arabidopsis thaliana [PDF]

open access: yes, 2019
The unfolded protein response (UPR) is required for protein homeostasis in the endoplasmic reticulum (ER) when plants are challenged by adverse environmental conditions.
Hong, Zheng-Hui   +4 more
core   +1 more source

Ribonuclease E provides substrates for ribonuclease P-dependent processing of a polycistronic mRNA. [PDF]

open access: yesGenes & Development, 1994
The polycistronic mRNA of the histidine operon is subject to a processing event that generates a rather stable transcript encompassing the five distal cistrons. The molecular mechanisms by which such a transcript is produced were investigated in Escherichia coli strains carrying mutations in several genes for exo- and endonucleases.
ALIFANO, Pietro   +5 more
openaire   +6 more sources

Structure and evolution of barley powdery mildew effector candidates

open access: yesBMC Genomics, 2012
Background Protein effectors of pathogenicity are instrumental in modulating host immunity and disease resistance. The powdery mildew pathogen of grasses Blumeria graminis causes one of the most important diseases of cereal crops. B.
Pedersen Carsten   +13 more
doaj   +1 more source

A possible mechanism for cold denaturation of proteins at high pressure [PDF]

open access: yes, 2003
We study cold denaturation of proteins at high pressures. Using multicanonical Monte Carlo simulations of a model protein in a water bath, we investigate the effect of water density fluctuations on protein stability. We find that above the pressure where
A. Hansen   +50 more
core   +3 more sources

Isolation and Characterization of a Novel Pathogenesis-Related Protein Gene (GmPRP) with Induced Expression in Soybean (Glycine max) during Infection with Phytophthora sojae. [PDF]

open access: yesPLoS ONE, 2015
Pathogenesis-related proteins (PR proteins) play crucial roles in the plant defense system. A novel PRP gene was isolated from highly resistant soybean infected with Phytophthora sojae (P.
Liangyu Jiang   +7 more
doaj   +1 more source

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