Results 21 to 30 of about 240,794 (319)

Arabidopsis RNA Polymerase IV generates 21-22 nucleotide small RNAs that can participate in RNA-directed DNA methylation and may regulate genes [PDF]

open access: greenbioRxiv, 2019
The plant-specific RNA Polymerase IV (Pol IV) transcribes heterochromatic regions, including many transposable elements, with the well-described role of generating 24 nucleotide (nt) small interfering RNAs (siRNAs).
Kaushik Panda   +2 more
openalex   +2 more sources

Characterization of endogenous RNA-directed DNA polymerase activity of reticuloendotheliosis viruses [PDF]

open access: yesJournal of Virology, 1975
Reticuloendotheliosis viruses (REV) contain an endogenous RNA-directed DNA polymerase activity. The endogenous DNA polymerase activity can be elicited in purified preparations of REV by treatment with nonionic detergents. The enzyme activity has a strong preference for manganous ions.
C. Kang
openaire   +4 more sources

Endonuclease activity of purified RNA-directed DNA polymerase from avian myeloblastosis virus.

open access: yesJournal of Biological Chemistry, 1979
Highly purified preparations of RNA-directed DNA polymerase from avian myeloblastosis virus (AMV) contain a Mn2+-activated endonuclease activity capable of nicking supercoiled DNA. This endonuclease activity co-sediments in glycerol gradients with the alphabeta form of AMV DNA polymerase, and co-chromatographs with DNA polymerase activity on DEAE ...
M Golomb, Duane P. Grandgenett
openaire   +4 more sources

A Protein Complex Required for Polymerase V Transcripts and RNA- Directed DNA Methylation in Arabidopsis [PDF]

open access: bronzeCurrent Biology, 2010
DNA methylation is an epigenetic modification associated with gene silencing. In Arabidopsis, DNA methylation is established by DOMAINS REARRANGED METHYLTRANSFERASE 2 (DRM2), which is targeted by small interfering RNAs through a pathway termed RNA-directed DNA methylation (RdDM).
James A. Wohlschlegel   +7 more
openaire   +5 more sources

Group Specific Antigen and RNA-Directed DNA Polymerase Activity in Normal Baboon Placenta

open access: yesExperimental Biology and Medicine, 1973
SummaryC-Type particles were observed in normal baboon placentas at various stages of gestation. This tissue was found to have interspecies specific antigens of the C-type RNA tumor viruses and RNA-directed DNA polymerase activity that could not be inhibited by antisera prepared against the previously recognized reverse transcriptases of several RNA ...
James E. Strickland   +6 more
openaire   +4 more sources

RNA-mediated in vivo Directed Evolution in Yeast

open access: yesBio-Protocol, 2022
Directed evolution is a powerful approach to obtain genetically-encoded sought-for traits. Compared to the prolonged adaptation regimes to mutations occurring under natural selection, directed evolution unlocks rapid screening and selection of mutants ...
Emil Jensen, Michael Jensen
doaj   +1 more source

A DCL3 dicing code within Pol IV-RDR2 transcripts diversifies the siRNA pool guiding RNA-directed DNA methylation

open access: yeseLife, 2022
In plants, selfish genetic elements, including retrotransposons and DNA viruses, are transcriptionally silenced by RNA-directed DNA methylation. Guiding the process are short interfering RNAs (siRNAs) cut by DICER-LIKE 3 (DCL3) from double-stranded ...
Andrew Loffer   +5 more
doaj   +1 more source

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