Results 21 to 30 of about 226,967 (304)
Comparative analysis of the end-joining activity of several DNA ligases. [PDF]
PLoS ONE, 2017 DNA ligases catalyze the repair of phosphate backbone breaks in DNA, acting with highest activity on breaks in one strand of duplex DNA. Some DNA ligases have also been observed to ligate two DNA fragments with short complementary overhangs or blunt ...
Robert J Bauer +6 more
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Escherichia coli DNA ligase B may mitigate damage from oxidative stress. [PDF]
PLoS ONE, 2017 Escherichia coli encodes two DNA ligases, ligase A, which is essential under normal laboratory growth conditions, and ligase B, which is not. Here we report potential functions of ligase B.
Truston J Bodine +6 more
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Structures of LIG1 that engage with mutagenic mismatches inserted by polβ in base excision repair
Nature Communications, 2022 Ligase I seals two ends of DNA during DNA repair and replication. Here — solving structures of Ligase I with imperfect DNA harboring mismatches incorporated by DNA polymerase — the authors reveal how the repair proteins maintain fidelity at final ...
Qun Tang +3 more
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Molecular Microbiology, 2001 DNA ligases join breaks in the phosphodiester backbone of DNA molecules and are used in many essential reactions within the cell. All DNA ligases follow the same reaction mechanism, but they may use either ATP or NAD+ as a cofactor. All Bacteria (eubacteria) contain NAD+‐dependent DNA ligases, and the uniqueness of these enzymes to Bacteria makes them ...
Wilkinson, A, Day, J, Bowater, R
openaire +3 more sources
High-fidelity DNA ligation enforces accurate Okazaki fragment maturation during DNA replication
Nature Communications, 2021 DNA ligase 1 (LIG1) finalizes eukaryotic nuclear DNA synthesis by sealing Okazaki fragments using DNA end-joining reactions. Here the authors, by studying an engineered low-fidelity LIG1, reveal that LIG1 is a highly accurate DNA ligase in vivo.
Jessica S. Williams +5 more
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PLoS Genetics, 2023 The tumor suppressor BRCA1-BARD1 complex regulates many cellular processes; of critical importance to its tumor suppressor function is its role in genome integrity.
Qianyan Li +4 more
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Thermostable DNA ligases from hyperthermophiles in biotechnology
Frontiers in Microbiology, 2023 DNA ligase is an important enzyme ubiquitous in all three kingdoms of life that can ligate DNA strands, thus playing essential roles in DNA replication, repair and recombination in vivo.
Jingru Shi +3 more
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DNA Ligase I, the Replicative DNA Ligase [PDF]
, 2012 Multiple DNA ligation events are required to join the Okazaki fragments generated during lagging strand DNA synthesis. In eukaryotes, this is primarily carried out by members of the DNA ligase I family. The C-terminal catalytic region of these enzymes is composed of three domains: a DNA binding domain, an adenylation domain and an OB-fold domain.
Timothy R L, Howes, Alan E, Tomkinson
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BRCA1 is a histone-H2A-specific ubiquitin ligase [PDF]
, 2014 The RING domain proteins BRCA1 and BARD1 comprise a heterodimeric ubiquitin (E3) ligase that is required for the accumulation of ubiquitin conjugates at sites of DNA damage and for silencing at DNA satellite repeat regions. Despite its links to chromatin,
Donna L. Mallery +15 more
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Identification of the DNA repair defects in a case of Dubowitz syndrome. [PDF]
PLoS ONE, 2013 Dubowitz Syndrome is an autosomal recessive disorder with a unique set of clinical features including microcephaly and susceptibility to tumor formation. Although more than 140 cases of Dubowitz syndrome have been reported since 1965, the genetic defects
Jingyin Yue +6 more
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