Results 21 to 30 of about 389,745 (325)
Frontiers in Chemistry, 2022 Three protein targets from SARS-CoV-2, the viral pathogen that causes COVID-19, are studied: the main protease, the 2′-O-RNA methyltransferase, and the nucleocapsid (N) protein. For the main protease, the nucleophilicity of the catalytic cysteine C145 is
Suhasini M. Iyengar +6 more
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Recent insights on RNA folding mechanisms from catalytic RNA
Cellular and Molecular Life Sciences (CMLS), 2000 Methods for probing RNA structure in real time have revealed that initial folding steps are complete in less than a second. Refolding of large catalytic RNAs in vitro often results in long-lived intermediates that reach the native structure very slowly.
Sarah A. Woodson
openalex +5 more sources
F1000Research, 2016 Since the discovery of the first catalytic RNA in 1981, the field of ribozyme research has developed from the discovery of catalytic RNA motifs in nature and the elucidation of their structures and catalytic mechanisms, into a field of engineering and ...
Sabine Müller +4 more
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The Exosome Subunit Rrp44 Plays a Direct Role in RNA Substrate Recognition [PDF]
, 2007 The exosome plays key roles in RNA maturation and surveillance, but it is unclear how target RNAs are identified. We report the functional characterization of the yeast exosome component Rrp44, a member of the RNase II family.
Anderson, James T. +2 more
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Catalytic RNA and RNA Splicing [PDF]
American Zoologist, 1989 The capacity of Watson-Crick base-pair complementarity to direct informational transactions basic to gene expression has long been appreciated. Among RNA molecules, it mediates mRNA-tRNA codon-anticodon pairing and the 16S rRNA-mRNA Shine-Dalgarno interaction.
openaire +2 more sources
Modulation of RNase E activity by alternative RNA binding sites.
PLoS ONE, 2014 Endoribonuclease E (RNase E) affects the composition and balance of the RNA population in Escherichia coli via degradation and processing of RNAs. In this study, we investigated the regulatory effects of an RNA binding site between amino acid residues 25
Daeyoung Kim +8 more
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The Origin of Life: Models and Data. [PDF]
, 2017 A general framework for conventional models of the origin of life (OOL) is the specification of a 'privileged function.' A privileged function is an extant biological function that is excised from its biological context, elevated in importance over other
Lanier, Kathryn A, Williams, Loren Dean
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Eukaryote-Specific Insertion Elements Control Human ARGONAUTE Slicer Activity
Cell Reports, 2013 We have solved the crystal structure of human ARGONAUTE1 (hAGO1) bound to endogenous 5′-phosphorylated guide RNAs. To identify changes that evolutionarily rendered hAGO1 inactive, we compared our structure with guide-RNA-containing and cleavage-active ...
Kotaro Nakanishi +8 more
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ARGONAUTE PIWI domain and microRNA duplex structure regulate small RNA sorting in Arabidopsis. [PDF]
, 2014 Small RNAs (sRNAs) are loaded into ARGONAUTE (AGO) proteins to induce gene silencing. In plants, the 5'-terminal nucleotide is important for sRNA sorting into different AGOs.
Carbonell, Alberto +9 more
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The structure of an RNAi polymerase links RNA silencing and transcription.
PLoS Biology, 2006 RNA silencing refers to a group of RNA-induced gene-silencing mechanisms that developed early in the eukaryotic lineage, probably for defence against pathogens and regulation of gene expression.
Paula S Salgado +5 more
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