Results 61 to 70 of about 25,371 (268)

RNA catalysis in model protocell vesicles. [PDF]

open access: yes, 2005
We are engaged in a long-term effort to synthesize chemical systems capable of Darwinian evolution, based on the encapsulation of self-replicating nucleic acids in self-replicating membrane vesicles.
Chen, Irene A   +2 more
core   +2 more sources

A comparative survey of the influence of small self-cleaving ribozymes on gene expression in human cell culture

open access: yesRNA Biology
Self-cleaving ribozymes are versatile tools for synthetic biologists when it comes to controlling gene expression. Up to date, 12 different classes are known, and over the past decades more and more details about their structure, cleavage mechanisms and ...
Dennis Kläge   +2 more
doaj   +1 more source

SARS‐CoV‐2 nucleocapsid protein variants have differential RNA chaperone activity

open access: yesThe FEBS Journal, EarlyView.
The SARS‐CoV‐2 nucleocapsid (N) protein facilitates RNA annealing through its RBD–IDR2–CTD region, identifying it as a functional RNA chaperone. The Omicron BA.5 variant shows reduced chaperone activity compared to the Wuhan wild‐type protein. Although phosphorylation has no effect on wild‐type N, phosphomimetic modification of BA.5 N restores its RNA ...
Sabrina Babl   +11 more
wiley   +1 more source

Phylogeny of conserved adenines in linkers of Group-I introns [PDF]

open access: yes, 2009
We have analyzed the linkers in group-I introns, a characteristic region that is crucial to the folding and splicing process of the folded RNA, in seventy sequences spreading across r-RNA, t-RNA and organelle genes from various organisms including algae,
Chandrasekhar Kesavan, Natarajan Ganesan
core   +1 more source

A structural analysis of in vitro catalytic activities of hammerhead ribozymes

open access: yesBMC Bioinformatics, 2007
Background Ribozymes are small catalytic RNAs that possess the dual functions of sequence-specific RNA recognition and site-specific cleavage. Trans-cleaving ribozymes can inhibit translation of genes at the messenger RNA (mRNA) level in both eukaryotic ...
Schneider Erasmus   +5 more
doaj   +1 more source

High yield production of the antifungal proteins PeAfpA and PdAfpB by vacuole targeting in a TMV‐based expression vector

open access: yesPlant Biotechnology Journal, EarlyView.
Summary Antifungal proteins (AFPs) derived from filamentous fungi show great potential against economically significant fungi that cause plant diseases and consequently threat food safety and security. This study focuses on the Penicillium expansum PeAfpA and Penicillium digitatum PdAfpB proteins and their activity against several phytopathogens.
Adrià Bugeda   +6 more
wiley   +1 more source

Decrease in gyrase A protein expression in _E. coli_ cells inhibited by antisense ribozymes [PDF]

open access: yes, 2008
RNase P complexed with external guide sequence (EGS) represents a novel nucleic-acid-based gene interference approach to modulate gene expression. Nucleic acid-based gene interference technologies represent promising strategies for specific inhibition of
Malathi Raghunathan   +1 more
core   +1 more source

Comprehensive sequence-to-function mapping of cofactor-dependent RNA catalysis in the glmS ribozyme. [PDF]

open access: yes, 2020
Massively parallel, quantitative measurements of biomolecular activity across sequence space can greatly expand our understanding of RNA sequence-function relationships. We report the development of an RNA-array assay to perform such measurements and its
Andreasson, Johan OL   +3 more
core  

Selfishness versus functional cooperation in a stochastic protocell model [PDF]

open access: yes, 2010
How to design an "evolvable" artificial system capable to increase in complexity? Although Darwin's theory of evolution by natural selection obviously offers a firm foundation, little hope of success seems to be expected from the explanatory adequacy of ...
Agresti   +56 more
core   +2 more sources

Structural Insights Into Tautomeric Dynamics in Nucleic Acids and in Antiviral Nucleoside Analogs

open access: yesFrontiers in Molecular Biosciences, 2022
DNA (2′-deoxyribonucleic acid) and RNA (ribonucleic acid) play diverse functional roles in biology and disease. Despite being comprised primarily of only four cognate nucleobases, nucleic acids can adopt complex three-dimensional structures, and RNA in ...
Bogdan I. Fedeles   +2 more
doaj   +1 more source

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