Results 31 to 40 of about 59,552 (223)

Screening for Important Base Identities in the Hairpin Ribozyme by In Vitro Selection for Cleavage

open access: yesBioTechniques, 1998
Random mutagenesis followed by an in vitro selection procedure was shown to be capable of identifying important bases of the hairpin ribozyme for cleavage of an RNA target sequence.
Andrew Siwkowski   +3 more
doaj   +1 more source

RNA interference approaches for treatment of HIV-1 infection. [PDF]

open access: yes, 2015
HIV/AIDS is a chronic and debilitating disease that cannot be cured with current antiretroviral drugs. While combinatorial antiretroviral therapy (cART) can potently suppress HIV-1 replication and delay the onset of AIDS, viral mutagenesis often leads to
Bobbin, Maggie L   +2 more
core   +1 more source

A modern mode of activation for nucleic acid enzymes.

open access: yesPLoS ONE, 2007
Through evolution, enzymes have developed subtle modes of activation in order to ensure the sufficiently high substrate specificity required by modern cellular metabolism. One of these modes is the use of a target-dependent module (i.e. a docking domain)
Dominique Lévesque   +2 more
doaj   +1 more source

Folding and catalysis by the hairpin ribozyme [PDF]

open access: yesFEBS Letters, 1999
The hairpin ribozyme undergoes a site‐specific transesterification cleavage of the phosphodiester backbone. The natural form of the ribozyme is a four‐way helical junction, where two arms contain unpaired loops. This folds by pairwise coaxial stacking of helical arms, and a rotation into an antiparallel conformation in which there is close association ...
openaire   +3 more sources

A Conserved Target Site in HIV-1 Gag RNA is Accessible to Inhibition by Both an HDV Ribozyme and a Short Hairpin RNA

open access: yesMolecular Therapy: Nucleic Acids, 2014
Antisense-based molecules targeting HIV-1 RNA have the potential to be used as part of gene or drug therapy to treat HIV-1 infection. In this study, HIV-1 RNA was screened to identify more conserved and accessible target sites for ribozymes based on the ...
Robert J Scarborough   +7 more
doaj   +1 more source

Structural variants and modifications of hammerhead ribozymes targeting influenza A virus conserved structural motifs

open access: yesMolecular Therapy: Nucleic Acids, 2022
The naturally occurring structure and biological functions of RNA are correlated, which includes hammerhead ribozymes. We proposed new variants of hammerhead ribozymes targeting conserved structural motifs of segment 5 of influenza A virus (IAV) (+)RNA ...
Tomasz Czapik   +3 more
doaj  

Evaluating target silencing by short hairpin RNA mediated by the group I intron in cultured mammalian cells

open access: yesBMC Biotechnology, 2011
Background The group I intron, a ribozyme that catalyzes its own splicing reactions in the absence of proteins in vitro, is a potential target for rational engineering and attracted our interest due to its potential utility in gene repair using trans ...
Takaku Hiroshi   +2 more
doaj   +1 more source

The folding of the hairpin ribozyme: Dependence on the loops and the junction [PDF]

open access: greenRNA, 2000
In its natural context, the hairpin ribozyme is constructed around a four-way helical junction. This presents the two loops that interact to form the active site on adjacent arms, requiring rotation into an antiparallel structure to bring them into proximity.
Zheng-yun Zhao   +3 more
openalex   +5 more sources

Biochemical prevention and treatment of viral infections – A new paradigm in medicine for infectious diseases [PDF]

open access: yes, 2004
For two centuries, vaccination has been the dominating approach to develop prophylaxis against viral infections through immunological prevention. However, vaccines are not always possible to make, are ineffective for many viral infections, and also carry
Fang, Fang, Le Calvez, Hervé, Yu, Mang
core   +3 more sources

RNA Back and Forth: Looking through Ribozyme and Viroid Motifs

open access: yesViruses, 2019
Current cellular facts allow us to follow the link from chemical to biochemical metabolites, from the ancient to the modern world. In this context, the “RNA world„ hypothesis proposes that early in the evolution of life, the ribozyme was ...
Marie-Christine Maurel   +3 more
doaj   +1 more source

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