Results 11 to 20 of about 43,119 (293)

The Hammerhead Ribozyme: A Long History for a Short RNA

open access: yesMolecules, 2017
Small nucleolytic ribozymes are a family of naturally occurring RNA motifs that catalyse a self-transesterification reaction in a highly sequence-specific manner.
Marcos de la Peña   +2 more
doaj   +2 more sources

Structure-based insights into self-cleavage by a four-way junctional twister-sister ribozyme

open access: yesNature Communications, 2017
Twister-sister is a self-cleaving ribozyme. Here, the authors report the 2.0 Å crystal structure of the four-way junctional twister-sister ribozyme in the pre-catalytic state and discuss mechanistic implications based on their mutagenesis experiments and
Luqian Zheng   +7 more
doaj   +2 more sources

Ribozyme-catalysed RNA synthesis using triplet building blocks

open access: yeseLife, 2018
RNA-catalyzed RNA replication is widely believed to have supported a primordial biology. However, RNA catalysis is dependent upon RNA folding, and this yields structures that can block replication of such RNAs.
James Attwater   +4 more
doaj   +2 more sources

Inducible knockdown of Plasmodium gene expression using the glmS ribozyme.

open access: yesPLoS ONE, 2013
Conventional reverse genetic approaches for study of Plasmodium malaria parasite gene function are limited, or not applicable. Hence, new inducible systems are needed. Here we describe a method to control P.
Parichat Prommana   +7 more
doaj   +2 more sources

Charge-density reduction promotes ribozyme activity in RNA–peptide coacervates via RNA fluidization and magnesium partitioning

open access: yesNature Chemistry, 2022
It has long been proposed that phase-separated compartments can provide a basis for the formation of cellular precursors in prebiotic environments.
Juan M. Iglesias-Artola   +6 more
semanticscholar   +1 more source

Structure and mechanism of a methyltransferase ribozyme

open access: yesNature Chemical Biology, 2022
Known ribozymes in contemporary biology perform a limited range of chemical catalysis, but in vitro selection has generated species that catalyze a broader range of chemistry; yet, there have been few structural and mechanistic studies of selected ...
J. Deng   +8 more
semanticscholar   +1 more source

A cell-based ribozyme reporter system employing a chromosomally-integrated 5′ exonuclease gene

open access: yesBMC Molecular and Cell Biology, 2021
Background Bioinformatic genome surveys indicate that self-cleaving ribonucleic acids (ribozymes) appear to be widespread among all domains of life, although the functions of only a small number have been validated by biochemical methods.
Aiyada Aroonsri   +4 more
doaj   +1 more source

Effective inhibition of human immunodeficiency virus 1 replication by engineered RNase P ribozyme. [PDF]

open access: yesPLoS ONE, 2012
Using an in vitro selection procedure, we have previously isolated RNase P ribozyme variants that efficiently cleave an mRNA sequence in vitro. In this study, a variant was used to target the HIV RNA sequence in the tat region.
Wenbo Zeng   +7 more
doaj   +1 more source

Catalytic RNA Oligomers Formed by Co-Oligomerization of a Pair of Bimolecular RNase P Ribozymes

open access: yesMolecules, 2022
Naturally occurring ribozymes with a modular architecture are promising platforms for construction of RNA nanostructures because modular redesign enables their oligomerization.
Mst. Ayesha Siddika   +7 more
doaj   +1 more source

An RNA polymerase ribozyme that synthesizes its own ancestor

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Significance Life depends on the propagation of heritable information across successive generations. An RNA polymerase ribozyme was obtained by in vitro evolution that has an unprecedented level of activity in copying complex RNA templates.
Katrina F. Tjhung   +3 more
semanticscholar   +1 more source

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