Results 61 to 70 of about 2,105,688 (341)

Epistatic Interactions within the Influenza A Virus Polymerase Complex Mediate Mutagen Resistance and Replication Fidelity

open access: yesmSphere, 2017
Lethal mutagenesis is a broad-spectrum antiviral strategy that employs mutagenic nucleoside analogs to exploit the high mutation rate and low mutational tolerance of many RNA viruses.
Matthew D. Pauly   +3 more
doaj   +1 more source

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

open access: yesFEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke   +2 more
wiley   +1 more source

Norovirus Proteinase-Polymerase and Polymerase Are Both Active Forms of RNA-Dependent RNA Polymerase [PDF]

open access: yesJournal of Virology, 2005
ABSTRACT In vitro mapping studies of the MD145 norovirus ( Caliciviridae ) ORF1 polyprotein identified two stable cleavage products containing the viral RNA-dependent RNA polymerase (RdRp) domains: ProPol (a precursor comprised of both the proteinase and polymerase) and Pol (the mature polymerase).
Gaël Belliot   +7 more
openaire   +3 more sources

Poliovirus-specific primer-dependent RNA polymerase able to copy poly(A) [PDF]

open access: yes, 1977
A template-dependent RNA polymerase has been isolated from poliovirus-infected cells by assaying for the ability of the enzyme to copy poly(A) complexed to an oligo(U) primer.
Baltimore, David, Flanegan, James B.
core  

Balancing Non-Equilibrium Driving with Nucleotide Selectivity at Kinetic Checkpoints in Polymerase Fidelity Control

open access: yesEntropy, 2018
High fidelity gene transcription and replication require kinetic discrimination of nucleotide substrate species by RNA and DNA polymerases under chemical non-equilibrium conditions.
Chunhong Long, Jin Yu
doaj   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS 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

Halting coronavirus polymerase [PDF]

open access: yesJournal of Biological Chemistry, 2020
The nucleotide analogue remdesivir is an investigational drug for the treatment of human coronavirus infection. Remdesivir is a phosphoramidate prodrug and is known to target viral RNA-dependent RNA polymerases. In this issue, Gordon et al. identify that remdesivir acts as a delayed RNA chain terminator for MERS-CoV polymerase complexes.
openaire   +3 more sources

Computational Investigations on Polymerase Actions in Gene Transcription and Replication Combining Physical Modeling and Atomistic Simulations

open access: yes, 2015
Polymerases are protein enzymes that move along nucleic acid chains and catalyze template-based polymerization reactions during gene transcription and replication.
Yu, Jin
core   +1 more source

Structure and mechanism of human DNA polymerase η [PDF]

open access: yes, 2010
The variant form of the human syndrome xeroderma pigmentosum (XPV) is caused by a deficiency in DNA polymerase eta (Pol eta), a DNA polymerase that enables replication through ultraviolet-induced pyrimidine dimers.
A Alt   +66 more
core   +7 more sources

Survival of RNA Replicators Is Much Easier in Protocells Than in Surface-Based, Spatial Systems

open access: yesLife, 2019
In RNA-World scenarios for the origin of life, replication is catalyzed by polymerase ribozymes. Replicating RNA systems are subject to invasion by non-functional parasitic strands. It is well-known that there are two ways to avoid the destruction of the
Vismay Shah   +4 more
doaj   +1 more source

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