Results 11 to 20 of about 41,285 (266)

Unbranched rod-like RNA is required for RNA editing of hepatitis delta virus genotype 2 and genotype 4

open access: yesVirus Research, 2023
RNA editing of the hepatitis delta virus (HDV) is essential for generating the large delta antigen, which is crucial for virion assembly. In HDV genotype 1 (HDV-1), editing occurs within the context of the unbranched rod-like structure characteristic of ...
Chao-Wei Hsu   +3 more
doaj   +1 more source

Preferential base pairing modes of T·T mismatches [PDF]

open access: yesFEBS Letters, 2011
It has long been recognized that T·T mismatches can adopt two different modes of exchangeable wobble base pairs in which no preferential pairing mode has been observed. In this study, we have performed a systematic nuclear magnetic resonance (NMR) investigation to study the sequence context effect on the pairing modes of T·T mismatches.
He, Guoyun, Kwok, Chun Kit, Lam, Sik Lok
openaire   +2 more sources

SNP Discrimination by Tolane-Modified Peptide Nucleic Acids: Application for the Detection of Drug Resistance in Pathogens

open access: yesMolecules, 2020
During the treatment of viral or bacterial infections, it is important to evaluate any resistance to the therapeutic agents used. An amino acid substitution arising from a single base mutation in a particular gene often causes drug resistance in ...
Kenji Takagi   +8 more
doaj   +1 more source

pH-Responsive DNA Motif: From Rational Design to Analytical Applications

open access: yesFrontiers in Chemistry, 2021
pH-responsive DNA motifs have attracted substantial attention attributed to their high designability and versatility of DNA chemistry. Such DNA motifs typically exploit DNA secondary structures that exhibit pH response properties because of the presence ...
Lin Lin Zheng   +5 more
doaj   +1 more source

Optimization of Single-Base-Pair Mismatch Discrimination in Oligonucleotide Microarrays [PDF]

open access: yesApplied and Environmental Microbiology, 2003
ABSTRACT The discrimination between perfect-match and single-base-pair-mismatched nucleic acid duplexes was investigated by using oligonucleotide DNA microarrays and nonequilibrium dissociation rates (melting profiles).
Urakawa, H.   +7 more
openaire   +4 more sources

Sequence-Dependent T:G Base Pair Opening in DNA Double Helix Bound by Cren7, a Chromatin Protein Conserved among Crenarchaea. [PDF]

open access: yesPLoS ONE, 2016
T:G base pair arising from spontaneous deamination of 5mC or polymerase errors is a great challenge for DNA repair of hyperthermophilic archaea, especially Crenarchaea.
Lei Tian   +5 more
doaj   +1 more source

A rule of seven in Watson-Crick base-pairing of mismatched sequences [PDF]

open access: yesNature Structural & Molecular Biology, 2012
Sequence recognition through base-pairing is essential for DNA repair and gene regulation, but the basic rules governing this process remain elusive. In particular, the kinetics of annealing between two imperfectly matched strands is not well characterized, despite its potential importance in nucleic acid-based biotechnologies and gene silencing.
Cisse, Ibrahim I.   +2 more
openaire   +3 more sources

Base-Pair Mismatch in DNA at 2.3A Resolution

open access: yesNucleosides and Nucleotides, 1985
Abstract X-ray single crystal analysis of the deoxyoctanucleotide d(GGGGCTCC)2 has revealed, for the first time, the existence of the G.T wobble mispair in an A-DNA double helical fragment.
Brown, T   +3 more
openaire   +1 more source

Dependence of Fluorescence Quenching of CY3 Oligonucleotide Conjugates on the Oxidation Potential of the Stacking Base Pair

open access: yesMolecules, 2020
To understand the complex fluorescence properties of astraphloxin (CY3)-labelled oligonucleotides, it is necessary to take into account the redox properties of the nucleobases.
Jens Sobek, Ralph Schlapbach
doaj   +1 more source

Multiscale simulations reveal the role of PcrA helicase in protecting against spontaneous point mutations in DNA

open access: yesScientific Reports, 2023
Proton transfer across hydrogen bonds in DNA can produce non-canonical nucleobase dimers and is a possible source of single-point mutations when these forms mismatch under replication.
Max Winokan   +3 more
doaj   +1 more source

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