h 0 1 2 3 4 ATPase activity present in the outer-membrane fraction is probably due to partial disruption of the inner membrane by the digitonin extraction procedure. It is suggested that part of the apparent ADPase activity of intact mitochondria is mediated via ATPase, presumably in conjunction with adenylate kinase. In addition, the mitochondrial-outer-membrane contains a distinct ADPase not ...

The naturally occurring ATPase inhibitor protein from ox heart mitochondria was cross-linked to its binding site on the mitochondrial ATPase using 1-ethyl-3-(dimethylamino)propyl carbodiimide. The cross-linked product, when transferred electrophoretically to a nitrocellulose sheet, reacted with antibodies directed against the inhibitor protein and the beta-subunit of the ATPase. It was conclude...

The H+-translocating ATPase located on vacuolar membranes of Neurospora crassa was partially purified by solubilization in two detergents, Triton X-100 and N-hexadecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, followed by centrifugation on sucrose density gradients. Two polypeptides of Mr approximately equal to 70,000 and approximately equal to 62,000 consistently migrated with activity, along...

The effect of the commonly used spice extracts cinnamon and clove and their main ingredients on the activity of various ATPases were investigated. Water extracts of both spices inhibited the activity of rat liver Na+/K+ ATPase, and Cu2+-ATPase, but stimulated F0F1ATPase. Similar effects were obtained with cinnamaldehyde and eugenol the major components of cinnamon and clove, respectively with e...

Phytoconstituents have been used in medicine science since ancient times due to their various pharmacological actions. But most of them (like flavanoids, terpenoids) are low in lipid solubility and have large molecular size due to complex multiple ring structure, causing poor absorption and poor bioavailability via oral route. The phytosome system of drug delivery results in increased bioavaila...

The effect of plant extracts Kalanchoe daigremontiana, and Aloe arborescens on human multiple myeloma cells' viability was investigated. It shown that kalanchoe aloe reduced tumor by 13 46%, respectively. combination with doxorubicin showed an additive synergism action, enhancing the antitumor effect. Treatment cells led to a decrease in intracellular glutathione level. level decreased 25% unde...

BACKGROUND Neurons rely exclusively on mitochondrial oxidative phosphorylation to meet cellular energy demands, and disruption of mitochondrial function often precipitates neuronal cell death. Auditory neurons in the chick brain stem (n. magnocellularis [NM]) receive glutamatergic innervation exclusively from ipsilateral eighth nerve afferents. Cochlea removal permanently disrupts afferent supp...

The nucleotide sequence of mitochondrial DNA of a cytoplasmic "petite" mutant of Saccharomyces cerevisiae is reported. The DNA has a repeat length of 1060 base pairs and contains a genetic marker (oli-1) for the ATPase proteolipid. The nucleotide sequence reveals the presence of part of the structural gene of the subunit-9 proteolipid of the ATPase complex and an extended A+T-rich region adjace...

Serotonin (5-HT), a neurohormone with many physiological actions, is synthesized from the dietary essential amino acid tryptophan (TRP). However, the effects of TRP on neuronal ion transporters and its role in stress response have not yet been identified in the teleost fish. The effects of varied doses of TRP on the activities of mitochondrial (m) and cytosolic (c) ion transporters were examine...