Results 261 to 270 of about 120,368 (286)
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International Journal of Biochemistry, 1981
Abstract 1. 1. The uptake and metabolism of β-P 32 -labelled UTP, ATP and uniformly labelled PPi was studied using bacteria washed twice with and immediately resuspended in a medium containing 0.031 M PO 3− 4 . 2. 2. Under these conditions, little P 32 -labelled PO 3− 4 was detected extracellularly when the cells were exposed for 2–5 min ...
John W. Fitzgerald, Gregory J. Stewart
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Abstract 1. 1. The uptake and metabolism of β-P 32 -labelled UTP, ATP and uniformly labelled PPi was studied using bacteria washed twice with and immediately resuspended in a medium containing 0.031 M PO 3− 4 . 2. 2. Under these conditions, little P 32 -labelled PO 3− 4 was detected extracellularly when the cells were exposed for 2–5 min ...
John W. Fitzgerald, Gregory J. Stewart
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Functional effects of uridine triphosphate on human skinned skeletal muscle fibers
Canadian Journal of Physiology and Pharmacology, 1998Chemically skinned human skeletal muscle fibers were used to study the effects of uridine triphosphate (UTP) on the tension-pCa relationship and on Ca2+uptake and release by the sarcoplasmic reticulum (SR). Total replacement (2.5 mM) of adenosine triphosphate (ATP) with UTP (i) displaced the tension-pCa relationship to the left along the abcissae and ...
Guilherme Suarez-Kurtz +3 more
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Identification of Uridine 5'-triphosphate Receptor mRNA in Rat Cochlear Tissues
Acta Oto-Laryngologica, 2000Previous investigations have reported the presence of uridine 5'-triphosphate (UTP) and adenosine 5'-triphosphate (ATP) receptors triggering phospholipase C (PLC) activation in the frog semicircular canal. The aim of this work was to characterize the molecular subtypes of these nucleotide receptors.
Olivier Sterkers +4 more
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Effects of Methacholine and Uridine 5 ′ -Triphosphate on Tracheal Mucus Rheology in Mice
American Journal of Respiratory Cell and Molecular Biology, 2000We compared the action of methacholine (MCh) and uridine 5'-triphosphate (UTP) with and without pretreatment with the chloride channel blocker 4,4'-diisothiocyano-2,2'-stilbenedisulfonate (DIDS) on the transepithelial potential difference (PD), the mucus collection rate (MCR), and tracheal mucus rheology using anesthetized C57BL/6 mice.
Eiichi Sudo +3 more
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Pure and Applied Chemistry, 1983
The dephosphorylation of ATP and UTP in dependence on pH proceeds for both nucleoside 5'-triphosphates (NTP) with the same rate indicating that the nucleic base moieties have no influence on this reaction. This is different in the presence of Cu2+ which promotes the scission of the terminal y phosphate group with both NTP5, but with ATP the reaction is
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The dephosphorylation of ATP and UTP in dependence on pH proceeds for both nucleoside 5'-triphosphates (NTP) with the same rate indicating that the nucleic base moieties have no influence on this reaction. This is different in the presence of Cu2+ which promotes the scission of the terminal y phosphate group with both NTP5, but with ATP the reaction is
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Lactose synthetase assay: Uridine triphosphate inhibition of interfering hydrolase activity
Analytical Biochemistry, 1969Abstract The presence of nonspecific UDP-galactose hydrolases in mammary tissue homogenates interferes with the radioactive assays of the A and B components of lactose synthetase. Uridine triphosphate was added to assay incubation mixtures and was found to effectively inhibit the hydrolase activity with a minimal influence on the specific A and B ...
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