Results 51 to 60 of about 76,419 (179)

Insights Into Cockayne Syndrome Type B: What Underlies Its Pathogenesis?

open access: yesAging Cell, Volume 24, Issue 7, July 2025.
Cockayne Syndrome complementation group B (CS‐B) is a highly debilitating progeroid syndrome that often culminates in the death of patients before adulthood. This review explores the pathogenesis of CS‐B and proposes that a combination of DNA damage accumulation, transcriptional dysregulation, and mitochondrial dysfunction is its underlying cause ...
Ricardo Afonso‐Reis   +3 more
wiley   +1 more source

Current advances in the role of classical non‐homologous end joining in hematologic malignancies

open access: yesClinical and Translational Discovery, Volume 5, Issue 3, June 2025.
As depicted in the graphics, the classical NHEJ pathway can either take place in cells with DSBs or normal lymphocytes, reinforcing the stability of genome, and simultaneously maintaining the function of the immune system. While complete deletion causes immunodeficiency and tumourigenesis, some inhibitions could promote cancer therapies.
Pengcheng Liu, Zizhen Xu
wiley   +1 more source

Enzymatic Joining of Polynucleotides

open access: yesJournal of Biological Chemistry, 1972
Abstract Incubation of superhelical closed circular DNA with Escherichia coli DNA ligase and adenosine 5'-monophosphate (AMP) yields two new circular forms: molecules with one single strand break and covalently closed circles that have lost superhelical turns.
I. R. Lehman   +2 more
openaire   +3 more sources

Inter-phylogenetic specificity in the bonding of amino acids to tRNA.

open access: yesThe Biological Bulletin, 1968
1. Amino acid activating enzymes (aminoacyl tRNA ligases) specific for valine and leucine tRNA have been partially purified from four widely differing phyla, namely yeast, E. coli, starfish and toadfish.2.
R. B. Loftfield, E. Eigner, J. Nobel
semanticscholar   +1 more source

In VitroRepair of Single–strand Breaks in γ-irradiated DNA by Polynucleotide Ligase

open access: yesInternational Journal of Radiation Biology and Related Studies in Physics, Chemistry and Medicine, 1972
SummaryThe ability of polynucleotide ligase to eliminate single-strand breaks in γ-irradiated DNA was studied. The irradiated DNA was first labelled at the 5′-end of the break with 32P-phosphate and treated in vitro with polynucleotide ligase. In phosphoester-bonds joined by the ligase, the incorporated 32P-phosphate is resistant to subsequent ...
Jacobs, A., Bopp, A., Hagen, U.
openaire   +4 more sources

Polynucleotide Ligase Activity in Adenovirus-Infected Human Embryonic Kidney Cell Cultures

open access: yesExperimental Biology and Medicine, 1970
SummaryCell-free extracts prepared from human embryonic kidney (HEK) cultures after infection with adenovirus 2 or 12 had a decreased ability to repair single-strand breaks in the HEK cell DNA substrate. The apparent loss of polynucleotide ligase activity found in infected cells may be related to the adenovirus-induced inhibition of HEK cell DNA ...
openaire   +3 more sources

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