Results 51 to 60 of about 12,837 (178)

Evidence for the involvement of Gi2 in activation of extracellular signal-regulated kinases in hepatocytes

open access: yesBMC Cell Biology, 2001
Background Activation of the extracellular signal-regulated kinases ERK1 and ERK2 in hepatocytes by prostaglandin (PG)F2α was recently found to be inhibited by pertussis toxin (PTX) suggesting a role for Gi proteins. Results Targeting the Gi2α expression
Sioud Mouldy   +2 more
doaj   +1 more source

The effects of anti-Fas ribozyme on T lymphocyte apoptosis in mice model with chronic obstructive pulmonary disease [PDF]

open access: yesIranian Journal of Basic Medical Sciences, 2017
Objective(s): In this study, we aimed to investigate the effects of anti-Fas ribozyme on the apoptosis of T lymphocytes (T cells) in mice model with chronic obstructive pulmonary disease (COPD).
Song-Ming Zhuo   +4 more
doaj   +1 more source

Mini‐Hairpin DNA: Extraordinarily Stable Structure and Its Applications

open access: yesChemistry – A European Journal, EarlyView.
Mini‐hairpin DNA fragments containing GCGAAGC and GCGAAAGC form exceptionally stable hairpin‐like structures, with only two G−C pairs and one sheared G−A pair, remaining undenatured in 7 M urea and resisting nuclease digestion. These mini‐hairpin sequences frequently appear in replication and transcription origins, influence DNA sequencing fidelity ...
Michiko Kimoto, Ichiro Hirao
wiley   +1 more source

Quantitation of In Vitro Activity of Synthetic Trans-Acting Ribozymes Using HPLC

open access: yesBioTechniques, 1997
The cleavage activity of synthetic ribozymes needs to be characterized by reliable and rapid methods. A chromatographic method to simultaneously quantitate the amounts of substrate, cleavage fragments and ribozyme is described.
L. Citti   +4 more
doaj   +1 more source

Rational Design Strategies for Stimuli‐Responsive DNAzymes Using Modified and Artificial Nucleotides

open access: yesChemistry – A European Journal, EarlyView.
Activity control of RNA‐cleaving DNAzymes in response to external stimuli has attracted growing interest for applications in DNA‐based diagnostics, therapeutics, and dynamic DNA nanotechnology. This review summarizes rational design strategies for stimuli‐responsive DNAzymes using modified or artificial nucleotides, including split and caged DNAzymes ...
Yusuke Takezawa, Mitsuhiko Shionoya
wiley   +1 more source

RNase footprinting demonstrates antigenomic hepatitis delta virus ribozyme structural rearrangement as a result of self-cleavage reaction

open access: yesBMC Research Notes, 2008
Background Hepatitis delta virus (HDV) is a satellite virus of hepatitis B. During viral replication the 1700-nucleotide-long genomic RNA and its complement, the antigenomic RNA, undergo self-cleavage catalyzed by internal ribozyme motifs that are ...
Dobrynina Nadezhda   +4 more
doaj   +1 more source

CRISPR/Cas9 Genome Engineering in Non‐Conventional Oleaginous Yeasts: Applications, Challenges, and Prospects

open access: yesYeast, EarlyView.
ABSTRACT Given the biotechnological potential of yeast‐derived oils for oleochemical production, genes encoding lipid metabolism enzymes are key targets for metabolic engineering. Genetic engineering tools such as Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/Cas9, Transcription Activator‐Like Effector Nucleases (TALENs), Zinc ...
Rodrigo Gonçalves Dias   +5 more
wiley   +1 more source

Efficient inhibition of hepatitis B virus replication by hepatitis delta virus ribozymes delivered by targeting retrovirus

open access: yesVirology Journal, 2010
Background Hepatitis delta virus (HDV) ribozyme is an attractive molecular tool that can specifically recognize and catalyze the self-cleavage of the viral RNA phosphodiester backbone.
Chen Long-Hua   +4 more
doaj   +1 more source

Enhanced RNA knockdown efficiency with engineered fusion guide RNAs that function with both CRISPR-CasRx and hammerhead ribozyme

open access: yesGenome Biology, 2023
Background CRISPR-Cas13 is a newly emerging RNA knockdown technology that is comparable to RNAi. Among all members of Cas13, CasRx degrades RNA in human cells with high precision and effectiveness.
Yonghao Zhan   +4 more
doaj   +1 more source

Hammerhead ribozyme kinetics [PDF]

open access: yesRNA, 1998
The hammerhead ribozyme is a small RNA motif that self cleaves at a specific phosphodiester bond to produce 2′,3′ cyclic phosphate and 5′ hydroxyl termini (Hutchins et al., 1986; Forster & Symons, 1987a). The secondary structure of the hammerhead consists of three helices of arbitrary sequence and length (designated I, II, and III) that intersect at 15
T K, Stage-Zimmermann, O C, Uhlenbeck
openaire   +2 more sources

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