Results 31 to 40 of about 266,483 (401)

Cyclic nucleotide specificity of the activator and catalytic sites of a cGMP-stimulated cGMP phosphodiesterase from Dictyostelium discoideum [PDF]

open access: yes, 1985
The cellular slime mold Dictyostelium discoideum has an intracellular phosphodiesterase which specifically hydrolyzes cGMP. The enzyme is activated by low cGMP concentrations, and is involved in the reduction of chemoattractant-mediated elevations of ...
Baraniak, Janina,   +8 more
core   +2 more sources

Loss of angiotensin II receptor expression in dopamine neurons in Parkinson’s disease correlates with pathological progression and is accompanied by increases in Nox4- and 8-OH guanosine-related nucleic acid oxidation and caspase-3 activation [PDF]

open access: yes, 2015
In rodent models of Parkinsons disease (PD), dopamine neuron loss is accompanied by increased expression of angiotensin II (AngII), its type 1 receptor (AT1), and NADPH oxidase (Nox) in the nigral dopamine neurons and microglia.
Aboud, O   +6 more
core   +2 more sources

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
Inaba, Kozo, Oda, Takuzo
core   +1 more source

Guanosine-Derived Supramolecular Hydrogels: Recent Developments and Future Opportunities

open access: yesACS Omega, 2018
Hydrogels are attractive materials for designing sensors, catalysts, scaffolds for tissue engineering, stimuli responsive soft materials, and controlled-release drug delivery systems.
Tanima Bhattacharyya, P. Saha, J. Dash
semanticscholar   +1 more source

Guanosine behind the scene [PDF]

open access: yesJournal of Neurochemistry, 2013
Read the full article ‘Guanosine controls inflammatory pathways to afford neuroprotection of hippocampal slices under oxygen and glucose deprivation conditions’ on doi: 10.1111/jnc ...
openaire   +3 more sources

Role of Guanosine Kinase in the Utilization of Guanosine for Nucleotide Synthesis in Escherichia coli [PDF]

open access: yesMicrobiology, 1989
Using purine auxotrophic strains of Escherichia coli with additional genetic lesions in the pathways of interconversion and salvage of purine compounds, we demonstrated the in vivo function of guanosine kinase and inosine kinase. Mutants with increased ability to utilize guanosine were isolated by plating cells on medium with guanosine as the sole ...
Hove-Jensen, Bjarne, Nygaard, Per
openaire   +3 more sources

In Silico and In Vitro Screening of Antipathogenic Properties of Melianthus comosus (Vahl) against Pseudomonas aeruginosa

open access: yesAntibiotics, 2021
Bacterial quorum sensing (QS) system regulates pathogenesis, virulence, and biofilm formation, and together they contribute to nosocomial infections. Opportunistic pathogens, such as Pseudomonas aeruginosa, rely on QS for regulating virulence factors ...
Itumeleng T. Baloyi   +3 more
doaj   +1 more source

Dynamics of Microtubule Growth and Catastrophe [PDF]

open access: yes, 2007
We investigate a simple model of microtubule dynamics in which a microtubule evolves by: (i) attachment of guanosine triphosphate (GTP) to its end at rate lambda, (ii) GTP converting irreversibly to guanosine diphosphate (GDP) at rate 1, and (iii ...
Antal, T.   +4 more
core   +1 more source

Modulation of phenylalanine and tyrosine concentrations by ischemia and guanosine in neuronal PC12 cells

open access: yesPteridines, 2013
Survival of neurons is dependent on the presence of trophic and non-trophic factors. We have previously observed the protective capacity of purine nucleosides in hypoxic neuronal cell cultures.
Thauerer Bettina   +3 more
doaj   +1 more source

Synthetic (p)ppGpp analogue is an inhibitor of stringent response in mycobacteria [PDF]

open access: yes, 2017
Bacteria elicit an adaptive response against hostile conditions such as starvation and other kinds of stresses. Their ability to survive such conditions depends, in part, on stringent response pathways.
Bhardwaj, Neerupma   +6 more
core   +2 more sources

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