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
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
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
Social context prevents heat hormetic effects against mutagens during fish development
FEBS Letters, EarlyView.This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere +5 more
wiley +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
Poliovirus-specific primer-dependent RNA polymerase able to copy poly(A) [PDF]
, 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
Kinetic analysis of an efficient DNA-dependent TNA polymerase. [PDF]
, 2005 alpha-l-Threofuranosyl nucleoside triphosphates (tNTPs) are tetrafuranose nucleoside derivatives and potential progenitors of present-day beta-d-2'-deoxyribofuranosyl nucleoside triphosphates (dNTPs).
Chaput, John C +6 more
core +2 more sources
miRNA‐29 regulates epidermal and mesenchymal functions in skin repair
FEBS Letters, EarlyView.miRNA‐29 inhibits cell‐to‐cell and cell‐to‐matrix adhesion by silencing mRNA targets. Adhesion is controlled by complex interactions between many types of molecules coded by mRNAs. This is crucial for keeping together the layers of the skin and for regenerating the skin after wounding.
Lalitha Thiagarajan +10 more
wiley +1 more source
A plasmid-based lacZα gene assay for DNA polymerase fidelity measurement [PDF]
, 2013 A significantly improved DNA polymerase fidelity assay, based on a gapped plasmid containing the lacZα reporter gene in a single-stranded region, is described.
Connolly, Bernard A +2 more
core +1 more source
FEBS Letters, EarlyView.We present the cellular transcription‐coupled Flp‐nick system allowing the introduction of a Top1‐mimicking cleavage complex (Flpcc) at a Flp recognition target site within a controllable LacZ gene. LacZ transcription leads to the collision of RNA polymerase II (RNAPII) with Flpcc, and this causes RNAPII stalling, ubiquitination, and degradation.
Petra Herring +6 more
wiley +1 more source