RNase H2-RED carpets the path to eukaryotic RNase H2 functions
نویسندگان
چکیده
منابع مشابه
RNase H2-initiated ribonucleotide excision repair.
Ribonucleotides are incorporated into DNA by the replicative DNA polymerases at frequencies of about 2 per kb, which makes them by far the most abundant form of potential DNA damage in the cell. Their removal is essential for restoring a stable intact chromosome. Here, we present a complete biochemical reconstitution of the ribonucleotide excision repair (RER) pathway with enzymes purified from...
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Ribonuclease H2 plays an essential role for genome stability as it removes ribonucleotides misincorporated into genomic DNA by replicative polymerases and resolves RNA/DNA hybrids. Hypomorphic loss-of-function mutations in the genes encoding the three RNase H2 subunits cause the type I interferonopathies AicardiGoutières syndrome (AGS) and systemic lypus erythemotosus (SLE). We showed that in p...
متن کاملRole of RNase H1 in DNA repair: removal of single ribonucleotide misincorporated into DNA in collaboration with RNase H2
Several RNases H1 cleave the RNA-DNA junction of Okazaki fragment-like RNA-DNA/DNA substrate. This activity, termed 3'-junction ribonuclease (3'-JRNase) activity, is different from the 5'-JRNase activity of RNase H2 that cleaves the 5'-side of the ribonucleotide of the RNA-DNA junction and is required to initiate the ribonucleotide excision repair pathway. To examine whether RNase H1 exhibits 3...
متن کاملMammalian RNase H2 removes ribonucleotides from DNA to maintain genome integrity
Ribonucleases H (RNases H) are endonucleases which cleave the RNA moiety of RNA/DNA hybrids. Their function in mammalian cells is incompletely understood. RNase H2 mutations cause Aicardi-Goutières syndrome, an inflammatory condition clinically overlapping with lupus erythematosus. We show that RNase H2 is essential in mouse embryonic development. RNase H2-deficient cells proliferated slower th...
متن کاملArchaeal RNase P has multiple protein subunits homologous to eukaryotic nuclear RNase P proteins.
Although archaeal RNase P RNAs are similar in both sequence and structure to those of Bacteria rather than eukaryotes, and heterologous reconstitution between the Bacillus subtilis RNase P protein and some archaeal RNase P RNAs has been demonstrated, no archaeal protein sequences with similarity to any known bacterial RNase P protein subunit have been identified, and the density of Methanotherm...
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ژورنال
عنوان ژورنال: DNA Repair
سال: 2019
ISSN: 1568-7864
DOI: 10.1016/j.dnarep.2019.102736