Results 41 to 50 of about 329,490 (335)

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

Kinetic analysis of an efficient DNA-dependent TNA polymerase. [PDF]

open access: yes, 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

Morphology and Molecular Phylogeny of Pseudocercospora fatouae Associated with Hypophyllous Leaf Mold on Fatoua villosa in Korea [PDF]

open access: yes한국균학회지, 2023
Dark brown leaf molds growing in a vein-limited pattern have been continuously observed on the lower leaf surface of Fatoua villosa in Korea.
Kui-Jae Lee   +5 more
doaj   +1 more source

Role of RNA Interference (RNAi) in the Moss Physcomitrella patens [PDF]

open access: yes, 2013
RNA interference (RNAi) is a mechanism that regulates genes by either transcriptional (TGS) or posttranscriptional gene silencing (PTGS), required for genome maintenance and proper development of an organism.
Arif, Muhammad Asif   +2 more
core   +3 more sources

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

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

Spt5 Cooperates with Human Immunodeficiency Virus Type 1 Tat by Preventing Premature RNA Release at Terminator Sequences [PDF]

open access: yes, 2002
The human immunodeficiency virus type 1 (HIV-1) Tat protein activates transcription elongation by stimulating the Tat-activated kinase (TAK/p-TEFb), a protein kinase composed of CDK9 and its cyclin partner, cyclin T1.
Bourgeois, Cyril F   +4 more
core   +3 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

Effect of UV Light on RNA-Directed DNA Polymerase Activity of Murine Oncornaviruses [PDF]

open access: yesJournal of Virology, 1975
The UV inactivation of RNA-directed DNA polymerase activity of Rauscher leukemia virus was shown to be due to damage to the protein. The UV dose resulting in 37% survival of viral polymerase activity at 254 nm was 2.4 × 10 4 to 3.1 × 10 4 ergs/mm 2 .
G G, Lovinger   +3 more
openaire   +2 more sources

alpha-helix E of Spo0A is required for sigma(A)- but not for sigma(H)-dependent promoter activation in Bacillus subtilis [PDF]

open access: yes, 2004
At the onset of endospore formation in Bacillus subtilis, the DNA binding protein Spo0A activates transcription from two types of promoters. The first type includes the spoIIG and spoIIE promoters, which are used by sigma(A)-RNA polymerase, whereas the ...
Brannigan, J.A., Kumar, A., Moran, C.P.
core   +2 more sources

Home - About - Disclaimer - Privacy