Activation of σ28-dependent transcription inEscherichia coliby the cyclic AMP receptor protein requires an unusual promoter organization [PDF]
, 2010 The Escherichia coli aer regulatory region contains a single promoter that is recognized by RNA polymerase containing the flagellar sigma factor, σ28.
Busby, Stephen J. W. +3 more
core +2 more sources
mSphere of Influence: Resolution of the Structure of an Influenza Virus Polymerase Is a Game Changer
mSphere, 2019 Mathilde Richard works in the field of virology, more specifically on the evolution and pathogenesis of influenza viruses. In this mSphere of Influence article, she reflects on how the two articles “Structure of Influenza A Polymerase Bound to the Viral ...
Mathilde Richard
doaj +1 more source
First-passage problems in DNA replication: effects of template tension on stepping and exonuclease activities of a DNA polymerase motor [PDF]
Journal of Physics: Condensed Matter, vol.25, 374105 (2013), 2013 A DNA polymerase (DNAP) replicates a template DNA strand. It also exploits the template as the track for its own motor-like mechanical movement. In the polymerase mode it elongates the nascent DNA by one nucleotide in each step. But, whenever it commits an error by misincorporating an incorrect nucleotide, it can switch to an exonuclease mode.
arxiv +1 more source
DNA polymerases required for repair of UV-induced damage in Saccharomyces cerevisiae [PDF]
, 1995 The ability of yeast DNA polymerase mutant strains to carry out repair synthesis after UV irradiation was studied by analysis of postirradiation molecular weight changes in cellular DNA.
Budd, Martin E., Campbell, Judith L.
core +2 more sources
mSphere, 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
Entropy, 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
Directed evolution of novel polymerase activities: Mutation of a DNA polymerase into an efficient RNA polymerase [PDF]
Proceedings of the National Academy of Sciences, 2002 The creation of novel enzymatic function is of great interest, but remains a challenge because of the large sequence space of proteins. We have developed an activity-based selection method to evolve DNA polymerases with RNA polymerase activity.
Takashi Sera +5 more
openaire +3 more sources
Survival of RNA Replicators Is Much Easier in Protocells Than in Surface-Based, Spatial Systems
Life, 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
Norovirus Proteinase-Polymerase and Polymerase Are Both Active Forms of RNA-Dependent RNA Polymerase [PDF]
Journal 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
Structure of the SARS-CoV nsp12 polymerase bound to nsp7 and nsp8 co-factors
Nature Communications, 2019 Recent history is punctuated by the emergence of highly pathogenic coronaviruses such as SARS- and MERS-CoV into human circulation. Upon infecting host cells, coronaviruses assemble a multi-subunit RNA-synthesis complex of viral non-structural proteins ...
R. N. Kirchdoerfer, A. Ward
semanticscholar +1 more source