Results 21 to 30 of about 47,484 (302)

Biosensor measurement of purine release from cerebellar cultures and slices [PDF]

open access: yes, 2010
We have previously described an action-potential and Ca2+-dependent form of adenosine release in the molecular layer of cerebellar slices. The most likely source of the adenosine is the parallel fibres, the axons of granule cells. Using microelectrode
Eason, Robert   +5 more
core   +1 more source

Characterisation of multiple substrate-specific (d)ITP/(d)XTPase and modelling of deaminated purine nucleotide metabolism [PDF]

open access: yes, 2011
To be viable, organisms possess a number of (deoxy)nucleotide phosphohydrolases, which hydrolyze these nucleotides removing them from the active NTP and dNTP pools. Deamination of purine bases can result in accumulation of such nucleotides as ITP, dITP,
Davies, Oluwafemi   +8 more
core   +1 more source

Phosphorylation of purine and pyrimidine nucleosides by isolated rat liver mitochondria [PDF]

open access: yes, 1975
Formation of 5'-AMP, 5'-GMP, 5'-CMP and 5'UMP was confirmed in isolated rat liver mitochondria incubated with alpha-ketoglutarate, inorganic phosphate, purine nucleoside and pyrimidine nucleoside. Increased incorporation of 32Pi into ATP, GTP and UTP was
Oda, Takuzo, Inaba, Kozo
core   +1 more source

The mTORC1 Signaling Network Senses Changes in Cellular Purine Nucleotide Levels

open access: yesCell Reports, 2017
Summary: Mechanistic (or mammalian) target of rapamycin complex 1 (mTORC1) integrates signals from growth factors and nutrients to control biosynthetic processes, including protein, lipid, and nucleic acid synthesis.
Gerta Hoxhaj   +7 more
doaj   +1 more source

Guanosine nucleotides regulate B2 kinin receptor affinity of agonists but not of antagonists: Discussion of a model proposing receptor precoupling to G protein [PDF]

open access: yes, 2000
The effect of nucleotides on binding of the B2 kinin (BK) receptor agonist {[}H-3]BK and the antagonist {[}H-3]NPC17731 to particulate fractions of human foreskin fibroblasts was studied.
Er Faussner   +3 more
core   +1 more source

Purine and Pyrimidine Nucleotide Synthesis and Metabolism [PDF]

open access: yesThe Arabidopsis Book, 2002
Purine and pyrimidine nucleotides are major energy carriers, subunits of nucleic acids and precursors for the synthesis of nucleotide cofactors such as NAD and SAM. Despite the obvious importance of these molecules, we still have much to learn about how these nucleotides are synthesized and metabolized by plants. Moreover, of the research that has been
Barbara A, Moffatt, Hiroshi, Ashihara
openaire   +2 more sources

Molecular analysis of mammalian adenylyl cyclases and bacterial adenylyl cyclase toxins [PDF]

open access: yes, 2009
The cAMP signaling pathway is crucial for many physiological processes and many disease states like neurodegenerative diseases, mood disorders, pain, drug dependency or heart failure.
Göttle, Martin
core   +1 more source

Inosine triphosphate pyrophosphatase from Trypanosoma brucei cleanses cytosolic pools from deaminated nucleotides

open access: yesScientific Reports, 2022
Inosine triphosphate pyrophosphatases (ITPases) are ubiquitous house-cleaning enzymes that specifically recognize deaminated purine nucleotides and catalyze their hydrolytic cleavage.
Antonio E. Vidal   +5 more
doaj   +1 more source

De Novo Purine Nucleotide Biosynthesis Pathway Is Required for Development and Pathogenicity in Magnaporthe oryzae

open access: yesJournal of Fungi, 2022
Purine nucleotides are indispensable compounds for many organisms and participate in basic vital activities such as heredity, development, and growth. Blocking of purine nucleotide biosynthesis may inhibit proliferation and development and is commonly ...
Meng-Yu Liu   +9 more
doaj   +1 more source

Urinary ATP Levels Are Controlled by Nucleotidases Released from the Urothelium in a Regulated Manner

open access: yesMetabolites, 2022
Adenosine 5′-triphosphate (ATP) is released in the bladder lumen during filling. Urothelial ATP is presumed to regulate bladder excitability. Urinary ATP is suggested as a urinary biomarker of bladder dysfunctions since ATP is increased in the urine of ...
Alejandro Gutierrez Cruz   +4 more
doaj   +1 more source

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