Now showing items 1-8 of 8
Gene gating at nuclear pores prevents the formation of R loops
(Taylor and Francis Ltd., 2018)
Transcription is an important source of genetic variability. A large amount of transcription-associated genome variation arises from the unscheduled formation of R loops. We have recently found that physical proximity of ...
Transcription as a Threat to Genome Integrity
(Annual Reviews Inc., 2016)
Genomes undergo different types of sporadic alterations, including DNA damage, point mutations, and genome rearrangements, that constitute the basis for evolution. However, these changes may occur at high levels as a result ...
Human mitochondrial degradosome prevents harmful mitochondrial R loops and mitochondrial genome instability
R loops are nucleic acid structures comprising an DNA-RNA hybrid and a displaced single-stranded DNA. These structures may occur transiently during transcription, playing essential biological functions. However, persistent ...
Guidelines for DNA recombination and repair studies: Cellular assays of DNA repair pathways
(Shared Science Publishers OG, 2019)
Understanding the plasticity of genomes has been greatly aided by assays for recombination, repair and mutagenesis. These assays have been developed in microbial systems that provide the advantages of genetic and molecular ...
Human THO–Sin3A interaction reveals new mechanisms to prevent R-loops that cause genome instability
R-loops, formed by co-transcriptional DNA–RNA hybrids and a displaced DNA single strand (ssDNA), fulfill certain positive regulatory roles but are also a source of genomic instability. One key cellular mechanism to prevent ...
Histone Mutants Separate R Loop Formation from Genome Instability Induction
R loops have positive physiological roles, but they can also be deleterious by causing genome instability, and the mechanisms for this are unknown. Here we identified yeast histone H3 and H4 mutations that facilitate R ...
The antitumor drugs trabectedin and lurbinectedin induce transcription-dependent replication stress and genome instability
(American Association for Cancer Research, 2019)
R-loops are a major source of replication stress, DNA damage, and genome instability, which are major hallmarks of cancer cells. Accordingly, growing evidence suggests that R-loops may also be related to cancer. Here we ...
UAP56/DDX39B is a major cotranscriptional RNA–DNA helicase that unwinds harmful R loops genome-wide
(Cold Spring Harbor Laboratory Press, 2020)
Nonscheduled R loops represent a major source of DNA damage and replication stress. Cells have different ways to prevent R-loop accumulation. One mechanism relies on the conserved THO complex in association with cotranscriptional ...