Staphylococcal alpha-toxin inhibited the activity of cyclic adenosine 3',5'-monophosphate-dependent protein kinase by competitive inhibition, probably by its interaction with a cyclic adenosine 3',5'-monophosphate-binding site in the protein kinase molecule.

Adenosine monophosphate pretreatment of mice with latent herpes simplex virus type 1 infections significantly reduced the rate of reactivation of latent virus. Adenosine monophosphate pretreatment did not, however, eradicate latent virus.

The purpose of this study was to determine whether a cyclic adenosine 3',5'monophosphate-dependent process can be involved in the regulation of vascular smooth muscle ai-adrenergic receptor responsiveness. Experiments were performed in cultured rabbit aortic smooth muscle cells which were characterized previously according to a-adrenergic receptorbinding characteristics and receptor-coupled nor...

Mitochondrial dysfunction occurs in sensory neurons and may contribute to distal axonopathy in animal models of diabetic neuropathy. The adenosine monophosphate-activated protein kinase and peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α) signalling axis senses the metabolic demands of cells and regulates mitochondrial function. Studies in muscle, liver and cardiac tissues h...

Enzymes catalyzing the phosphorylation of adenosine monophosphate by adenosine triphosphate have been found in many tissues, and the adenylate kinases from liver and muscle have been extensively purified and studied (l-3). Yeast extracts also phosphorylated uridine monophosphate and guanosine monophosphate (4), and similar reactions were shown to be present in other tissues (5-7). Recently, Str...

1. Cyclic adenosine 3’,5’-monophosphate and N6-2’-Odibutyryl cyclic adenosine 3’,5’-monophosphate stimulate the active cellular entry and cumulative uptake of several amino acids in rat kidney cortex slices. 2. Parathyroid hormone, known to augment cellular production of cyclic adenosine 3’,5’-monophosphate by stimulating renal cortical adenyl cyclase, increases the renal cortical uptake of ami...

A dinucleoside monophosphate was isolated from 5-bromouracil-induced filaments of a thymine auxotroph of Escherichia coli K-12. The dinucleoside monophosphate was fractioned from a ["C]5-bromouracil-labeled perchloric acid extract using Dowex-1-formate ion-exchange chromatography. Sephadex chromatography revealed its molecular weight to be 710. Snake venom phosphodiesterase digest of the dinucl...

Vasoactive intestinal peptide stimulated the synthesis of adenosine 3',5'-monophosphate in fractions of isolated carp horizontal cells. When applied extracellularly to isolated and cultured horizontal cells, the peptide also induced a slow depolarization (30 to 40 millivolts) accompanied by a decrease in membrane resistance. However, analogs of adenosine 3',5'-monophosphate applied extracellula...

The method described here allows the quantitative simultaneous determination of adenosine 5'-triphosphate, adenosine 5'-diphosphate, adenosine 5'-monophosphate, adenosine, guanosine 5'-triphosphate, guanosine 5'-diphosphate, guanosine, inosine 5'-monophosphate, inosine, uric acid, xanthine, hypoxanthine and beta-nicotinamide adenine dinucleotide by ion-pair high performance liquid chromatograph...