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M ROCKSTEIN

Publications and source records attributed to M ROCKSTEIN.

16 recordsLinked to original sources

Enzyme changes in flight muscle correlated with aging and flight ability in the male housefly.

Magnesium-activated adenosine triphosphatase activity in the giant mitochondria (sarcosomes) of the flight muscle of aging male houseflies decreases concomitantly with failure in flight as reflected in the loss of wings during the second week of adult life. Preceding the loss of wings, however, there is a rapid decline in the activity of an alpha-glycerophosphate dehydrogenase which is located in the extramitochondrial fraction and is dependent on nicotinamide adenine dinucleotide.

Adenosine Triphosphatases↗

Age changes in adenine nucleotides in flight muscle of male house fly.

Under standard conditions of temperature, humidity, and (artificial) diet, loss in flight ability is paralleled by a decline of up to 66(2/3) percent in activity of enzymes dephosphorylating organophosphorous compounds in the thoracic flight muscle. Concomitantly, the content of adenosine triphosphate in the flight muscle increases five times, while the content of adenosine monophosphate correspondingly diminishes.

Adenine Nucleotides↗