2 edition of Role of proline in insect flight metabolism. found in the catalog.
Role of proline in insect flight metabolism.
Patnagere S. Veerabhadrappa
Written in English
|The Physical Object|
|Pagination||vi, 33 l.|
|Number of Pages||33|
Investigation of proline and lipid metabolism during long flights or in wild females may reveal that AKH signalling is also involved, as reported in the fruit beetle, P. sinuata (Gäde and Auerswald, ). Defining the AKH signalling pathway and where it intercedes to mobilize carbohydrates in mosquitoes will allow us to understand the degree to which these mechanisms are conserved across insects. The book begins with an overview of insect flight biomechanics. Dudley explains insect morphology, wing motions, aerodynamics, flight energetics, and flight metabolism within a modern phylogenetic setting. Drawing on biomechanical principles, he describes and evaluates flight behavior and the limits to flight performance. Reviews: 4.
Besides their role in metabolism, recent studies on AKH function have further increased their attractiveness as a target for pest control by linking the hormone to insect defence responses against. A brief overview of insect lipid metabolism. The three main sources of fats in overwintering insects (see Fig. 1 for an overview of structures) are: (1) de novo synthesis from smaller molecules such as sugars and amino acids; (2) the incorporation or modification of ingested dietary lipids; and (3) winter-specific modifications of lipids from the first two sources.
Abstract. Most reviews of lipid metabolism in insects have covered all classes of lipid compounds. Since lipids are generally defined as substances poorly soluble in water but soluble in organic solvents, the authors had to deal with compounds with divergent . Proline is known to be an energy source for protein synthesis and appears to have a major role in insect flying metabolism. Insects can detect proline in their food and use it as an energy substrate to start flight and other high energy consuming activities. Honey bee has a feeding preference for nectars with higher concentrations of this amino.
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The current results on nectar-feeding hymenopteran species emphasize that proline metabolism is not strictly associated with a protein-rich diet. The use of proline as a fuel to power flight was initially associated with the protein-rich meal of blood-sucking insects such as the tsetse fly [5,6] and more recently mosquitoes [30–32].
However, the capacity to use proline is also clearly Cited by: Sacktor, B.,Regulation of intermediary metabolism with special reference to the control mechanisms in insect flight muscle, Adv.
Insect Physiol. Google ScholarCited by: Bees are thought to be strict users of carbohydrates as metabolic fuel for flight. Many insects, however, have the ability to oxidize the amino acid proline at a high rate, which is a unique feature of this group of animals.
The presence of proline in the haemolymph of bees and in the nectar of plants led to the hypothesis that plants may produce proline as a metabolic reward for pollinators. Although for most insects the role of proline metabolism is still unknown, there are several options for the use of proline as an energy substrate.
Proline can be used exclusively or as the major fuel, as in the case of the blood-feeding tsetse fly, Glossina morsitans, since blood is rich in proteins and amino acids (Auerswald and Gäde, ). Enzymes catalyzing the two-step oxidation of L-proline to L-glutamate in insect flight muscle have been measured.
The pathway is similar to that in mammalian liver and in microorganisms. Proline oxidase, which catalyzes the oxidation of L-proline to Δ 1-pyrrolinecarboxylate, isCited by: 1Enzymes catalyzing the two-step oxidation of L-proline to L-glutamate in insect flight muscle have been measured.
The pathway is similar to that in m. Metabolic pathways of proline consumption in working flight muscles and its resynthesis were investigated in the African fruit beetle, Pachnoda ondria isolated from flight muscles. In larger insects, high metabolic rates and the associated heat production result in elevated body temperatures; temperature effects and temperature regulation are thus closely related to flight.
Control of flight metabolism is accomplished by a complicated meshwork of. Metabolic scheme showing pathways of carbohydrate, fat, and proline oxidation in insect flight muscles.
Included are the anaplerotic roles of pyruvate carboxylation and proline oxidation in some species, as well as the α-glycerophosphate shuttle (involving G3P and DHAP) for transferring reducing equivalents from cytoplasm to mitochondria.
In recent decades, the costs of dispersal per flight have been intensively investigated in insects (particularly those associated with respiration, metabolism and energy costs) but, in comparison. Mitochondrial ion movements and the special role of Ca2+ in the regulation of flight muscle metabolism.- The oxidation-reduction state of the respiratory components in mitochondria and the control of metabolism.- References.- 2.
Biochemistry of Insect Flight: Part 2 - Fuel Supply.- The Nature of Respiratory Fuels.- Stores of Respiratory Fuels Beenakkers, ), proline and insect flight (Bursell, ). General flight metabolism is covered by Kammer and Heinrich () and Beenakkers et al.
FLIGHT MUSCLE CONTRACTION AND WINGBEAT In most species wingbeat is accomplished by the operation of indirect flight. Newsholme EA, Leech AR () Biochemistry for the medical sciences. John Wiley, New York Olembo NK, Pearson DJ () Changes in the contents of intermediates of proline and carbohydrate metabolism in flight muscle of the tsetse fly Glossina morsitans and the fleshfly Sarcophaga Biochem – Google Scholar.
The author relates the biomechanics of flight to insect ecology and evolution in a major new work of synthesis. The book begins with an overview of insect flight biomechanics. Dudley explains insect morphology, wing motions, aerodynamics, flight energetics, and flight metabolism within a modern phylogenetic s: 4.
It seems likely that proline is a very important, maybe the sole energy substrate during flight, since a utilization rate of pmol of proline and glutamate in 4 min per beetle (body weight mg) corresponds with an O,-consumption of ca.
pmol/g body weight/ hr which is a normal value in flying insects, e.g. Schistocerca gregaria and Drosophila sp.
consume pmol. Since proline appears to be a major substrate utilized in insect flight metabolism, the increase in arginase activity at this stage suggests a major role for arginase in proline formation. The activities of proline dehydrogenase, glutamate dehydrogenase, aspartate-oxoglutarate aminotransferase and alanine-oxoglutarate aminotransferase in some insect flight muscles.
References.- 5 The Role of Proline in Energy Metabolism.- 1. Introduction.- 2. Proline Metabolism.- The Utilization of Proline during Flight.- Pathways of Proline Catabolism.- The Regulation of Proline Oxidation.- The Reconstitution of Proline.- 3.
Discussion.- References.- 6 Lipid Transport by Hemolymph Lipoprotein—A. The book begins with an overview of insect flight biomechanics. Dudley explains insect morphology, wing motions, aerodynamics, flight energetics, and flight metabolism within a modern phylogenetic setting.
Drawing on biomechanical principles, he describes and evaluates flight behavior and the limits to flight g: proline. Bees are thought to be strict users of carbohydrates as metabolic fuel for flight. Many insects, however, have the ability to oxidize the amino acid proline at a high rate, which is a unique featur.
Abstract. Insect flight is powered by muscles that attach more-or-less directly to the wings (direct flight muscles) and muscles that bring about wing movement by distorting the insect’s thorax (indirect flight Missing: proline.The energy metabolism of insects differs from that of other animals in a variety of ways, including the prodigious amounts of energy expended by flying insects, the presence in hemolymph of large concentrations of sugar in the form of the nonreducing disaccharide tre halose, the transport of fat in the form of diacylglycerol, and the periodic.Since proline appears to be a major substrate utilized in insect flight metabolism, the increase in arginase activity at this stage suggests a major role for arginase in proline formation Topics: Articles.
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