Results 11 to 20 of about 294,685 (303)

Is there a classical nonsense-mediated decay pathway in trypanosomes? [PDF]

open access: yesPLoS ONE, 2011
In many eukaryotes, messenger RNAs with premature termination codons are destroyed by a process called "nonsense-mediated decay", which requires the RNA helicase Upf1 and also, usually, an interacting factor, Upf2.
Praveen Delhi   +4 more
doaj   +5 more sources

Discovery of a metabolic alternative to the classical mevalonate pathway

open access: yeseLife, 2013
Eukarya, Archaea, and some Bacteria encode all or part of the essential mevalonate (MVA) metabolic pathway clinically modulated using statins. Curiously, two components of the MVA pathway are often absent from archaeal genomes.
Nikki Dellas   +3 more
doaj   +4 more sources

Proprotein Convertases and the Complement System

open access: yesFrontiers in Immunology, 2022
Proteins destined for secretion - after removal of the signal sequence - often undergo further proteolytic processing by proprotein convertases (PCs).
József Dobó   +3 more
doaj   +1 more source

Functional Analysis of Two Divergent C4 Isotypes in the Classical and Lectin Pathways of Complement Activation in the Common Carp (Cyprinus carpio)

open access: yesJournal of Marine Science and Engineering, 2023
In the evolution of the complement system, a major humoral innate immune factor, the existence of multiple isotypes of the complement components is considered as a key strategy to enhance innate immune defense. Complement C4 is also diversified in a wide
Rosli Nehlah   +4 more
doaj   +1 more source

Complement Activation-Independent Attenuation of SARS-CoV-2 Infection by C1q and C4b-Binding Protein

open access: yesViruses, 2023
The complement system is a key component of the innate immune response to viruses and proinflammatory events. Exaggerated complement activation has been attributed to the induction of a cytokine storm in severe SARS-CoV-2 infection.
Nazar Beirag   +9 more
doaj   +1 more source

Classical pathway complement activation in Kawasaki syndrome

open access: bronzeJournal of Allergy and Clinical Immunology, 1994
In this study the complement breakdown products C3d, C4d, Bb and membrane attack complex were measured in plasma of patients with Kawasaki syndrome. The results suggested strong activation of the classical activation pathway. However, there was no significant decrease in hemolytic titer or in the concentrations of the intact proteins C3, C4, and B. The
Takao Kohsaka   +3 more
openalex   +4 more sources

cGAS/STING: novel perspectives of the classic pathway [PDF]

open access: yesMolecular Biomedicine, 2020
AbstractCyclic GMP-AMP (cGAMP) synthase (cGAS) is a cytosolic DNA sensor and innate immune response initiator. Binding with exogenous or endogenous nucleic acids, cGAS activates its downstream adaptor, stimulator of interferon genes (STING). STING then triggers protective immune to enable the elimination of the pathogens and the clearance of cancerous ...
Menghui Gao   +5 more
openaire   +4 more sources

Complement activation negatively affects the platelet response to thrombopoietin receptor agonists in patients with immune thrombocytopenia: a prospective cohort study

open access: yesPlatelets, 2023
Increased platelet destruction is central in the pathogenesis of immune thrombocytopenia. However, impaired platelet production is also relevant and its significance underlies the rationale for treatment with thrombopoietin receptor agonists (TPO-RAs ...
Alexander Åkesson   +7 more
doaj   +1 more source

Cytokine and Complement Response in the Glaucomatous βB1-CTGF Mouse Model

open access: yesFrontiers in Cellular Neuroscience, 2021
Glaucoma is a complex neurodegenerative disease leading to a loss of retinal ganglion cells (RGCs) and optic nerve axons. An activation of the complement system seems to contribute to cell loss in this disease.
Sabrina Reinehr   +6 more
doaj   +1 more source

Peptide inhibitor of complement C1 (PIC1), a novel suppressor of classical pathway activation: mechanistic studies and clinical potential

open access: yesFrontiers in Immunology, 2014
The classical pathway of complement plays multiple physiological roles including modulating immunological effectors initiated by adaptive immune responses as well as an essential homeostatic role in the clearance of damaged self-antigens.
Julia A Sharp   +5 more
doaj   +1 more source

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