Single-stranded DNA containing CGT/A motifs binds to the helicase domain of Schlafen 11 (SLFN11) to initiate cell death and cytokine production via SLFN11 ribonuclease activity (see related Research Article by Zhang ).
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Alzheimers Dement
December 2024
School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA.
Background: The common APOE2/E3/E4 polymorphism, the strongest risk factor for Alzheimer's disease (AD), is determined by two-site haplotypes at codons 112 (Cys>Arg) and 158 (Arg>Cys), resulting into six genotypes. Due to strong linkage disequilibrium between the two sites, 3 of the 4 expected haplotypes (E2, E3, E4) have been observed and extensively studied in relation to AD risk. Compared to the most common haplotype of E3 (Cys112 - Arg158), E4 (Arg112 - Arg 158) and E2 (Cys112 - Cys158) haplotypes are determined by a single-point mutation at codons 112 and 158, respectively.
View Article and Find Full Text PDFAdvances in Functional Nucleic Acid SERS Sensing Strategies.
ACS Sens
January 2025
Center for Biomedical-photonics and Molecular Imaging, Advanced Diagnostic-Therapy Technology and Equipment Key Laboratory of Higher Education Institutions in Shaanxi Province, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China.
Functional nucleic acids constitute a distinct category of nucleic acids that diverge from conventional nucleic acid amplification methodologies. They are capable of forming intricate hybrid structures through Hoogsteen and reverse Hoogsteen hydrogen bonding interactions between double-stranded and single-stranded DNA, thereby broadening the spectrum of DNA interactions. In recent years, functional DNA/RNA-based surface-enhanced Raman spectroscopy (SERS) has emerged as a potent platform capable of ultrasensitive and multiplexed detection of a variety of analytes of interest.
View Article and Find Full Text PDFAsymmetric distribution of G-quadruplex forming sequences in genomes of retroviruses.
Sci Rep
January 2025
Institute of Biophysics, Czech Academy of Sciences , Královopolská 135, Brno, 612 65, Czech Republic.
Retroviruses are among the most extensively studied viral families, both historically and in contemporary research. They are primarily investigated in the fields of viral oncogenesis, reverse transcription mechanisms, and other infection-specific aspects. These include the integration of endogenous retroviruses (ERVs) into host genomes, a process widely utilized in genetic engineering, and the ongoing search for HIV/AIDS treatment.
View Article and Find Full Text PDFMolecular and biological characterization of infectious full-length cDNA clones of two viruses in Paris yunnanensis, including a novel potyvirus.
Sci Rep
January 2025
State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, 650201, China.
Paris yunnanensis, also named as Rhizoma Paridis in the Chinese Pharmacopeia, is a perennial Chinese medicinal herb commonly grown in Southwest China. However, several viruses have been found infecting this plant in recent years. Using high-throughput sequencing (HTS) and Sanger sequencing, this study obtained the complete genome sequences of three capillovirus isolates and one potyvirus isolate.
View Article and Find Full Text PDFNovel bacteriophages targeting wheat phyllosphere bacteria carry DNA modifications and single-strand breaks.
Virus Res
December 2024
Department of Plant and Environmental Science, University of Copenhagen, Frederiksberg, Denmark. Electronic address:
The phyllosphere microbiome can positively or negatively impact plant health and growth, but we currently lack the tools to control microbiome composition. Contributing to a growing collection of bacteriophages (phages) targeting bacteria living in the wheat phyllosphere, we here isolate and sequence eight novel phages targeting common phyllosphere Erwinia and Pseudomonas strains, including two jumbo phages. We characterize genomic, phylogenetic, and morphological traits from these phages and argue for establishing four novel viral genera.
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