Results 21 to 30 of about 132,332 (305)

Structural investigations of proteins encoded by SARS‐CoV‐2

open access: yesFEBS Open Bio, 2022
It is hard to overestimate the influence of the COVID‐19 pandemic on scientific research in the last two and a half years. Within a few weeks after the first cases of the disease were reported, the causative agent, now known as SARS‐CoV‐2, was identified,
Alexander Wlodawer
doaj   +1 more source

Ribonuclease P [PDF]

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2011
The gene coding for the RNA subunit of ribonuclease P (RNase P) is essential in all free-living organisms. The RNA subunit, itself, is an enzyme and, from its evolutionary tree, we can infer that it is a very ancient molecule. The specificity of this enzyme is that it cleaves other RNA molecules at the junction of single-stranded and the 5′ end of ...
openaire   +2 more sources

Hot and crispy : CRISPR-Cas systems in the hyperthermophile Sulfolobus solfataricus [PDF]

open access: yes, 2013
The CRISPR (clustered regularly interspaced short palindromic repeats) and Cas (CRISPR-associated) genes are widely spread in bacteria and archaea, representing an intracellular defence system against invading viruses and plasmids.
White, Malcolm F., Zhang, Jing
core   +2 more sources

CRYSTALLINE RIBONUCLEASE [PDF]

open access: yesJournal of General Physiology, 1940
1. A crystalline enzyme capable of digesting yeast nucleic acid has been isolated from fresh beef pancreas. 2. The enzyme called "ribonuclease" is a soluble protein of albumin type. Its molecular weight is about 15,000. Its isoelectric point is in the region of pH 8.0. 3.
openaire   +2 more sources

The dynamic interplay of host and viral enzymes in type III CRISPR-mediated cyclic nucleotide signalling

open access: yeseLife, 2020
Cyclic nucleotide second messengers are increasingly implicated in prokaryotic anti-viral defence systems. Type III CRISPR systems synthesise cyclic oligoadenylate (cOA) upon detecting foreign RNA, activating ancillary nucleases that can be toxic to ...
Januka S Athukoralage   +5 more
doaj   +1 more source

The Selectivity for Tumor Cells of Nuclear-Directed Cytotoxic RNases Is Mediated by the Nuclear/Cytoplasmic Distribution of p27KIP1

open access: yesMolecules, 2021
Although single targeted anti-cancer drugs are envisaged as safer treatments because they do not affect normal cells, cancer is a very complex disease to be eradicated with a single targeted drug. Alternatively, multi-targeted drugs may be more effective
Glòria García-Galindo   +6 more
doaj   +1 more source

Adenovirus-mediated hPNPase(old-35) gene transfer as a therapeutic strategy for neuroblastoma [PDF]

open access: yes, 2009
Current treatment options for neuroblastoma fail to eradicate the disease in the majority of high-risk patients, clearly mandating development of innovative therapeutic strategies. Gene therapy represents a promising approach for reversing the neoplastic
Ardelt   +37 more
core   +2 more sources

Sialic Acid-Binding Lectin from Bullfrog Eggs Exhibits an Anti-Tumor Effect Against Breast Cancer Cells Including Triple-Negative Phenotype Cells

open access: yesMolecules, 2018
Sialic acid-binding lectin from Rana catesbeiana eggs (cSBL) is a multifunctional protein that has lectin and ribonuclease activity. In this study, the anti-tumor activities of cSBL were assessed using a panel of breast cancer cell lines. cSBL suppressed
Takeo Tatsuta   +6 more
doaj   +1 more source

Cationic poly(amidoamine) promotes cytosolic delivery of bovine RNase A in melanoma cells, while maintaining its cellular toxicity [PDF]

open access: yes, 2015
Ribonucleases are known to cleave ribonucleic acids, inducing cell death. RNase A, a member of the ribonuclease family, generally displayed poor in vitro activity. This has been attributed to factors such as low intracellular delivery.
Akinc   +60 more
core   +1 more source

Novel Ribonuclease Activity Differs between Fibrillarins from Arabidopsis thaliana

open access: yesFrontiers in Plant Science, 2017
Fibrillarin is one of the most important nucleolar proteins that have been shown as essential for life. Fibrillarin localizes primarily at the periphery between fibrillar center and dense fibrillar component as well as in Cajal bodies.
Ulises Rodriguez-Corona   +5 more
doaj   +1 more source

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