Rhinopoma microphyllum kinneari is an insectivorous microchiropteran, breeding once in a year. Histochemical localisation of two dehydrogenases viz., succinate dehydrogenase (SDH) and lactate de hyd ro ge na se (LDH), was achieved in the ovaries of bats obtained during non-pregnant, pregnant and lacta ting stages. Differential enzyme activities in different structures of the ovaries were visual...

BACKGROUND Succinate has been identified by the U.S. Department of Energy as one of the top 12 building block chemicals, which can be used as a specialty chemical in the agricultural, food, and pharmaceutical industries. Escherichia coli are now one of the most important succinate producing candidates. However, the stoichiometric maximum succinate yield under anaerobic conditions through the re...

The results of the study have shown that when exposed to vibration, changes in cardiac activity occur rabbits, nature and direction which depend on parameters dynamic factor. Vibration with a frequency 20 Hz causes moderate tachycardia, 40 80 – severe tachycardia. Three months vibration first month exposure after three exposure, bradycardia. There is also reduction respiratory movements decreas...

1. On brief exposure of rats to hypobaric conditions, the activity of hepatic mitochondrial succinate dehydrogenase was raised from the basal state to a ;partially activated state'. This was further raised to ;fully activated state' by preincubation of mitochondria with succinate, as was the activity in mitochondria from normal rats. 2. On washing mitochondria with the homogenizing sucrose medi...

This paper examines proposals in the literature that 3-nitropropionate is a suicide inactivator of succinate dehydrogenase and that it acts by nucleophilic addition to N-5 of the covalently bound flavin component of the enzyme. With purified, soluble preparations of the enzyme, the inhibition developed slowly, and nearly complete inactivation occurred with a stoichiometric amount of 3-nitroprop...

Singer and Kearney"], in their early studies, recognized that the flavocoenzyme of mitochondria1 succinate dehydrogenase ("SD-flavin") [**I was a derivative of flavin-adenine-dinucleotide which was covalently bound to the protein. In cooperation with Dr. Singer's team [***I, we have attempted to elucidate the structure of this coenzyme. In the first preliminary communication I21, we concluded f...

The sensitivity of nicotinamide adenine dinucleotide (NADH) oxidase and succinoxidase to metal chelators, the generation of an electron paramagnetic resonance (EPR) signal upon addition of these substrates, and the rate of formation of the EPR signal relative to the rate of the cytochrome reduction suggest the participation of nonheme iron proteins in the respiratory process of Escherichia coli...

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