Results 11 to 20 of about 389,596 (184)

Crystal structure of an RNA-cleaving DNAzyme

open access: yesNature Communications, 2017
RNA-cleaving DNA enzymes are catalytic DNA that can cleave RNA in a sequence-specific manner. Here, the authors report three crystal structures of the 8–17 DNAzyme that include the pre-catalytic state of the RNA cleavage reaction, providing insight into ...
Hehua Liu   +14 more
doaj   +1 more source

Evolution of RNA-protein interactions: non-specific binding led to RNA splicing activity of fungal mitochondrial tyrosyl-tRNA synthetases. [PDF]

open access: yesPLoS Biology, 2014
The Neurospora crassa mitochondrial tyrosyl-tRNA synthetase (mtTyrRS; CYT-18 protein) evolved a new function as a group I intron splicing factor by acquiring the ability to bind group I intron RNAs and stabilize their catalytically active RNA structure ...
Lilian T Lamech   +2 more
doaj   +1 more source

Expression of the C-terminal family 22 carbohydratebinding module of xylanase 10B of Clostridium themocellum in tobacco plant [PDF]

open access: yes, 2009
Carbohydrate-binding modules have been shown to alter plant cell wall structural architecture. Hence, they have the potential application of being used to engineer the plant to produce tailor-made natural fibers in the cell wall.
Obembe, Olawole O.
core   +2 more sources

Many Activities, One Structure: Functional Plasticity of Ribozyme Folds

open access: yesMolecules, 2016
Catalytic RNAs, or ribozymes, are involved in a number of essential biological processes, such as replication of RNA genomes and mobile genetic elements, RNA splicing, translation, and RNA degradation.
Matthew W.L. Lau   +1 more
doaj   +1 more source

Structural and biochemical basis for DNA and RNA catalysis by human Topoisomerase 3β

open access: yesNature Communications, 2022
The authors revealed novel roles of catalytic residues and divalent metal ions for hsTOP3B, the human RNA topoisomerase, and demonstrated the structural elements that kinetically modulate the DNA and RNA topoisomerase activities of TOP3B.
Xi Yang   +4 more
doaj   +1 more source

Twenty years of "Lipid World": a fertile partnership with David Deamer [PDF]

open access: yes, 2019
"The Lipid World" was published in 2001, stemming from a highly effective collaboration with David Deamer during a sabbatical year 20 years ago at the Weizmann Institute of Science in Israel.
Kahana, Amit   +2 more
core   +1 more source

Prokaryotic Argonautes – variations on the RNA interference theme

open access: yesMicrobial Cell, 2014
The discovery of RNA interference (RNAi) has been a major scientific breakthrough. This RNA-guided RNA interference system plays a crucial role in a wide range of regulatory and defense mechanisms in eukaryotes.
John van der Oost   +2 more
doaj   +1 more source

RNA ligase ribozymes with a small catalytic core

open access: yesScientific Reports, 2023
Catalytic RNAs, or ribozymes, catalyze diverse chemical reactions that could have sustained primordial life in the hypothetical RNA world. Many natural ribozymes and laboratory evolved ribozymes exhibit efficient catalysis mediated by elaborate catalytic
Yoko Nomura, Yohei Yokobayashi
doaj   +1 more source

The origins and physical roots of life’s dual – metabolic and genetic – nature [PDF]

open access: yes, 2017
This review paper aims at a better understanding of the origin and physical foundation of life’s dual – metabolic and genetic – nature. First, I give a concise ‘top-down’ survey of the origin of life, i.e., backwards in time from extant DNA/RNA/protein ...
De Tiège, Alexis
core   +2 more sources

A Structure-Function Diversity Survey of the RNA-Dependent RNA Polymerases From the Positive-Strand RNA Viruses

open access: yesFrontiers in Microbiology, 2019
The RNA-dependent RNA polymerases (RdRPs) encoded by the RNA viruses are a unique class of nucleic acid polymerases. Each viral RdRP contains a 500–600 residue catalytic module with palm, fingers, and thumb domains forming an encircled human right hand ...
Hengxia Jia, Hengxia Jia, Peng Gong
doaj   +1 more source

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