Results 11 to 20 of about 2,027,606 (189)

Comprehensive analysis of the HEPN superfamily: identification of novel roles in intra-genomic conflicts, defense, pathogenesis and RNA processing [PDF]

open access: yesBiology Direct, 2013
BACKGROUND: The major role of enzymatic toxins that target nucleic acids in biological conflicts at all levels has become increasingly apparent thanks in large part to the advances of comparative genomics.
A Maxwell Burroughs   +4 more
core   +2 more sources

[Terminal DNA nucleotidyltransferase in blastic crisis in myelocytic leukemia].

open access: closedActa haematologica Polonica, 1982
The importance of determination of the activity of TdT is discussed in the light of a case of chronic myeloid leukaemia in a patient aged 55 years in whom after 4 years from the onset of the disease blastic crisis developed. High TdT activity was correlated with other features of blastic crisis of lymphoid character and with good response to ...
E, Rudzka   +4 more
openaire   +2 more sources

Comparative Genomics of Lactococcus spp. From Global Aquaculture Outbreaks Reveals Virulence Determinants, Antibiotic Resistance, and Phage Defence Mechanisms. [PDF]

open access: yesMicrobiologyopen
Lactococcus petauri predominated in isolates from outbreaks of lactococcosis, suggesting a shift in disease aetiology. Genomic analysis revealed diverse virulence factors, prophage and resistance genes, while antimicrobial susceptibility testing showed uniform resistance to common antibiotics found in farming systems, emphasising the need for ...
Blanchard AM   +9 more
europepmc   +2 more sources

The Role and Therapeutic Potential of the cGAS-STING Signaling Pathway in Alzheimer's Disease. [PDF]

open access: yesBrain Behav
This work reveals the relationship between the cGAS‐STING signaling pathway and the pathological mechanisms of Alzheimer's disease.The role of the cGAS‐STING signaling pathway in AD pathology. AD leads to the production of neutrophil extracellular traps (NETs), endoplasmic reticulum (ER) stress, and the release of mitochondrial DNA (mtDNA) and nuclear ...
Li X, Gao W, Ye Q, Li H.
europepmc   +2 more sources

Unexpected bonds: ubiquitin-like conjugation of cGAS/CD-NTases supports their enzymatic activity and antiphage defense

open access: yesSignal Transduction and Targeted Therapy, 2023
In their recently published study in Nature , Jenson et al. 1 provide compelling, unexpected evidence that bacterial cGAMP synthase (cGAS) and other cGAS/DncV-like Nucleotidyltransferases (CD-NTase) undergo ubiquitin-like conjugation (ULC) in type-II ...
Katarzyna Andryka-Cegielski   +2 more
semanticscholar   +1 more source

cGAS-STING: insight on the evolution of a primordial antiviral signaling cassette

open access: yesFaculty Reviews, 2021
Stimulator of interferon genes (STING) functions in the cytosolic DNA-sensing pathway of innate immunity in mammals. It is activated upon binding the cyclic dinucleotide 2′3′-cGAMP, a second messenger produced by the enzyme cyclic guanosine monophosphate–
Hua Cai, J. Imler
semanticscholar   +1 more source

A eubacterial origin for the human tRNA nucleotidyltransferase? [PDF]

open access: yes, 2001
tRNA CCA-termini are generated and maintained by tRNA nucleotidyltransferases. Together with poly(A) polymerases and other enzymes they belong to the nucleotidyltransferase superfamily.
Aebi M.   +12 more
core   +1 more source

Sequence motifs that distinguish ATP(CTP) : tRNA nucleotidyl transferases from eubacterial poly(A) polymerases [PDF]

open access: yes, 2004
ATP(CTP):tRNA nucleotidyl transferases, tRNA maturing enzymes found in all organisms, and eubacterial poly(A) polymerases, enzymes involved in mRNA degradation, are so similar that until now their biochemical functions could not be distinguished by their
Keller, W., Martin, G.
core   +2 more sources

Two distinct modes of metal ion binding in the nuclease active site of a viral DNA-packaging terminase: insight into the two-metal-ion catalytic mechanism

open access: yesNucleic Acids Research, 2015
Many dsDNA viruses encode DNA-packaging terminases, each containing a nuclease domain that resolves concatemeric DNA into genome-length units. Terminase nucleases resemble the RNase H-superfamily nucleotidyltransferases in folds, and share a two-metal ...
Haiyan Zhao   +7 more
semanticscholar   +1 more source

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