DNA-directed DNA Polymerase and Strand Displacement Activity of the Reverse Transcriptase Encoded by the R2 Retrotransposon [PDF]
R2 elements are non-long terminal repeat (non-LTR) retrotransposons with a single open reading-frame encoding reverse transcriptase, DNA endonuclease and nucleic acid-binding domains. The elements are specialized for insertion into the 28 S rRNA genes of many animal phyla.
Anna, Kurzynska-Kokorniak +3 more
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Emerging Mycobacterium tuberculosis (Mtb) resistant strains have continued to limit the efficacies of existing antitubercular therapies. More specifically, mutations in the RNA replicative machinery of Mtb, RNA polymerase (RNAP), have been widely linked to rifampicin (RIF) resistance, which has led to therapeutic failures in many clinical cases ...
Mokgerwa Zacharia Monama +2 more
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Inhibitors of HIV-1 Reverse Transcriptase—Associated Ribonuclease H Activity
HIV-1 enzyme reverse transcriptase (RT) is a major target for antiviral drug development, with over half of current FDA-approved therapeutics against HIV infection targeting the DNA polymerase activity of this enzyme. HIV-1 RT is a multifunctional enzyme
Michael A. Parniak +4 more
doaj +1 more source
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
Role of RNA Interference (RNAi) in the Moss Physcomitrella patens [PDF]
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
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The Inhibitory Action of Kohamaic Acid A Derivatives on Mammalian DNA Polymerase β
We previously isolated a novel natural product, designated kohamaic acid A (KA-A, compound 1), as an inhibitor of the first cleavage of fertilized sea urchin eggs, and found that this compound could selectively inhibit the activities of mammalian DNA ...
Yoshiyuki Mizushina +9 more
doaj +1 more source
Engagement of Components of DNA-Break Repair Complex and NFκB in Hsp70A1A Transcription Upregulation by Heat Shock. [PDF]
An involvement of components of DNA-break repair (DBR) complex including DNA-dependent protein kinase (DNA-PK) and poly-ADP-ribose polymerase 1 (PARP-1) in transcription regulation in response to distinct cellular signalling has been revealed by ...
Joyita Hazra +4 more
doaj +1 more source
Isolation and physical properties of the DNA‐directed RNA polymerase from Thermus thermophilus HB8 [PDF]
The DNA‐directed RNA polymerase from the extremely thermophilic eubacterium Thermus thermophilus HB8 was purified employing a new and rapid method. The subunit pattern of the enzyme, analyzed by SDS gel electrophoresis, was interpreted as: 140 kDa and 170 kDa for β and β′, 40 kDa for α and 92 kDa for ó.
S, Wnendt +3 more
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Visualizing DNA polymerase ι catalyze Hoogsteen-directed DNA synthesis
Translesion synthesis polymerases efficiently incorporate nucleotides opposite DNA lesions. Pol ι, for example, bypasses minor-groove and exocyclic purine adducts.
Zach Frevert +6 more
doaj +1 more source
Mutations that Separate the Functions of the Proofreading Subunit of the Escherichia coli Replicase
The dnaQ gene of Escherichia coli encodes the Ɛ subunit of DNA polymerase III, which provides the 3\u27 - 5\u27 exonuclease proofreading activity of the replicative polymerase.
Kreuzer, Kenneth N., Whatley, Zakiya
core +1 more source

