Results 41 to 50 of about 203,406 (266)

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.
openaire   +2 more sources

On the origin of DNA genomes: evolution of the division of labor between template and catalyst in model replicator systems. [PDF]

open access: yesPLoS Computational Biology, 2011
The division of labor between template and catalyst is a fundamental property of all living systems: DNA stores genetic information whereas proteins function as catalysts. The RNA world hypothesis, however, posits that, at the earlier stages of evolution,
Nobuto Takeuchi   +2 more
doaj   +1 more source

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

open access: yesCurrent 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).
Law, Julie A.   +6 more
openaire   +4 more sources

Human placentas contain a specific inhibitor of RNA-directed DNA polymerase. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1981
Human placental extracts contain a specific inhibitor of mammalian retroviral RNA-directed DNA polymerase (deoxynucleosidetriphosphate:DNA deoxynucleotidyltransferase, EC 2.7.7.7) activity. This inhibitor copurifies with retrovirus-like particles in human placental extracts.
J A, Nelson, J A, Levy, J C, Leong
openaire   +2 more sources

RNA-directed DNA Methylation.

open access: yesPLoS Genetics, 2020
RNA-directed DNA methylation (RdDM) is a biological process in which non-coding RNA molecules direct the addition of DNA methylation to specific DNA sequences.
Robert M Erdmann, Colette L Picard
doaj   +1 more source

African swine fever virus I267L acts as an important virulence factor by inhibiting RNA polymerase III-RIG-I-mediated innate immunity.

open access: yesPLoS Pathogens, 2022
ASFV is a large DNA virus that is highly pathogenic in domestic pigs. How this virus is sensed by the innate immune system as well as why it is so virulent remains enigmatic.
Yong Ran   +10 more
doaj   +1 more source

T4 DNA polymerase improves the efficiency of multiple site-directed mutagenesis

open access: yesBiotechnology & Biotechnological Equipment, 2016
Site-directed mutagenesis (SDM) is a useful tool to study the functions of regulatory sequences of DNA and RNA, and the structures and functions of proteins. Numerous methods have been developed for either single or multiple SDM (MSDM).
Wei Guo   +4 more
doaj   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

open access: yesFEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa   +3 more
wiley   +1 more source

Annotation of genomics data using bidirectional hidden Markov models unveils variations in Pol II transcription cycle

open access: yesMolecular Systems Biology, 2014
DNA replication, transcription and repair involve the recruitment of protein complexes that change their composition as they progress along the genome in a directed or strand‐specific manner.
Benedikt Zacher   +4 more
doaj   +1 more source

The developmental regulator PKL is required to maintain correct DNA methylation patterns at RNA-directed DNA methylation loci

open access: yesGenome Biology, 2017
Background The chromodomain helicase DNA-binding family of ATP-dependent chromatin remodeling factors play essential roles during eukaryote growth and development.
Rong Yang   +13 more
doaj   +1 more source

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