Results 31 to 40 of about 28,547,466 (259)

TurboFold: Iterative probabilistic estimation of secondary structures for multiple RNA sequences

open access: yesBMC Bioinformatics, 2011
Background The prediction of secondary structure, i.e. the set of canonical base pairs between nucleotides, is a first step in developing an understanding of the function of an RNA sequence.
Sharma Gaurav   +2 more
doaj   +1 more source

RNA base-pairing complexity in living cells visualized by correlated chemical probing

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Significance How do we determine the structure of an RNA, particularly in cells? Chemical probing is a broadly applicable strategy for mapping RNA structure. However, chemical probing experiments do not observe base pairs directly and hence are unable to
Anthony M Mustoe   +4 more
semanticscholar   +1 more source

Identification of the base-pairing requirements for repression of hctA translation by the small RNA IhtA leads to the discovery of a new mRNA target in Chlamydia trachomatis. [PDF]

open access: yesPLoS ONE, 2015
The non-coding small RNA, IhtA expressed by the obligate intracellular human pathogen Chlamydia trachomatis modulates the translation of HctA, a key protein involved in replicative to infectious cell type differentiation.
Nicole A Grieshaber   +5 more
doaj   +1 more source

Enzyme-free genetic copying of DNA and RNA sequences

open access: yesBeilstein Journal of Organic Chemistry, 2018
The copying of short DNA or RNA sequences in the absence of enzymes is a fascinating reaction that has been studied in the context of prebiotic chemistry.
Marilyne Sosson, Clemens Richert
doaj   +1 more source

Evaluation of RNA secondary structure prediction for both base-pairing and topology

open access: yesBiophysics Reports, 2018
Graphical abstractAbstractSecondary structures of RNAs are crucial to the understanding of their tertiary structures and functions. At present, many theoretical methods are widely used to predict RNA secondary structures. The performance of these methods
Yunjie Zhao   +3 more
semanticscholar   +1 more source

Base-pairing of uracil and 2,6-diaminopurine: from cocrystals to photoreactivity. [PDF]

open access: yesiScience
Summary: We show that the non-canonical nucleobase 2,6-diaminopurine (D) spontaneously base pairs with uracil (U) in water and the solid state without the need to be attached to the ribose-phosphate backbone. Depending on the reaction conditions, D and U
Stolar T   +12 more
europepmc   +2 more sources

Making Molecules with Clay: Layered Double Hydroxides, Pentopyranose Nucleic Acids and the Origin of Life

open access: yesLife, 2019
A mixture of sugar diphosphates is produced in reactions between small aldehyde phosphates catalysed by layered double hydroxide (LDH) clays under plausibly prebiotic conditions.
Harold S. Bernhardt
doaj   +1 more source

Stringent Nucleotide Recognition by the Ribosome at the Middle Codon Position

open access: yesMolecules, 2017
Accurate translation of the genetic code depends on mRNA:tRNA codon:anticodon base pairing. Here we exploit an emissive, isosteric adenosine surrogate that allows direct measurement of the kinetics of codon:anticodon University of California base ...
Wei Liu   +5 more
doaj   +1 more source

Hfq CLASH uncovers sRNA-target interaction networks linked to nutrient availability adaptation

open access: yeseLife, 2020
By shaping gene expression profiles, small RNAs (sRNAs) enable bacteria to efficiently adapt to changes in their environment. To better understand how Escherichia coli acclimatizes to nutrient availability, we performed UV cross-linking, ligation and ...
Ira Alexandra Iosub   +8 more
doaj   +1 more source

Guide-substrate base-pairing requirement for box H/ACA RNA-guided RNA pseudouridylation

open access: yesRNA: A publication of the RNA Society, 2018
Box H/ACA RNAs are a group of small RNAs found in abundance in eukaryotes (as well as in archaea). Although their sequences differ, eukaryotic box H/ACA RNAs all share the same unique hairpin-hinge-hairpin-tail structure.
Meemanage D De Zoysa   +3 more
semanticscholar   +1 more source

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