Proteins of Oxygen-Binding and Energy Metabolism in Muscles of Antarctic Fishes: Evolutionary Adjustments to Life at Cold Temperature
The suborder Notothenoidei is the dominant fish group of the Southern Ocean surrounding Antarctica, both in terms of number of species and biomass. For about fourteen million years, these highly successful fish evolved under stable thermal conditions that result in body temperatures of about zero de...
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:orsp_reports-1116 2023-05-15T13:55:20+02:00 Proteins of Oxygen-Binding and Energy Metabolism in Muscles of Antarctic Fishes: Evolutionary Adjustments to Life at Cold Temperature Sidell, Bruce Vayda, Michael E. 2003-03-20T08:00:00Z application/pdf https://digitalcommons.library.umaine.edu/orsp_reports/104 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1116&context=orsp_reports unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/orsp_reports/104 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1116&context=orsp_reports This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). University of Maine Office of Research Administration: Grant Reports Antarctic organisms Antarctic ecosystems Marine Biology Oceanography text 2003 ftmaineuniv 2023-03-12T19:15:18Z The suborder Notothenoidei is the dominant fish group of the Southern Ocean surrounding Antarctica, both in terms of number of species and biomass. For about fourteen million years, these highly successful fish evolved under stable thermal conditions that result in body temperatures of about zero degrees centigrade throughout their life histories. Evolution this cold environment has led to unusual physiological and biochemical characteristics. In some cases, the characteristics contribute to overcoming constraints of cold temperature on biological processes. In other instances, mutations that probably would have been lethal in warmer, less oxygen-rich environments than the Southern Ocean have been retained in Antarctic fishes. This research project focuses on three major objectives that exploit these unusual conditions to identify mechanisms compatible with normal cellular function at cold temperature and to gain unique insights into the physiological roles of key intracellular proteins. The three lines of study proposed are the molecular basis for the failure of the myoglobin encoding gene to be expressed in certain Antarctic notothenioid fishes, the basis of the substrate specificity of the enzyme fatty acyl-CoA synthetase that is involved in the catabolism of fatty acids, and the functional roles played by different isoforms of creatine phosphokinase in locomotory muscle of Antarctic fish. Results from this study will not only provide insight into the evolutionary biology of the Antarctic notothenioid fishes, but will elucidate important general principles that are applicable to widely different taxa beyond the Antarctic. Text Antarc* Antarctic Antarctica Southern Ocean The University of Maine: DigitalCommons@UMaine Antarctic Southern Ocean The Antarctic |
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The University of Maine: DigitalCommons@UMaine |
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Antarctic organisms Antarctic ecosystems Marine Biology Oceanography |
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Antarctic organisms Antarctic ecosystems Marine Biology Oceanography Sidell, Bruce Vayda, Michael E. Proteins of Oxygen-Binding and Energy Metabolism in Muscles of Antarctic Fishes: Evolutionary Adjustments to Life at Cold Temperature |
topic_facet |
Antarctic organisms Antarctic ecosystems Marine Biology Oceanography |
description |
The suborder Notothenoidei is the dominant fish group of the Southern Ocean surrounding Antarctica, both in terms of number of species and biomass. For about fourteen million years, these highly successful fish evolved under stable thermal conditions that result in body temperatures of about zero degrees centigrade throughout their life histories. Evolution this cold environment has led to unusual physiological and biochemical characteristics. In some cases, the characteristics contribute to overcoming constraints of cold temperature on biological processes. In other instances, mutations that probably would have been lethal in warmer, less oxygen-rich environments than the Southern Ocean have been retained in Antarctic fishes. This research project focuses on three major objectives that exploit these unusual conditions to identify mechanisms compatible with normal cellular function at cold temperature and to gain unique insights into the physiological roles of key intracellular proteins. The three lines of study proposed are the molecular basis for the failure of the myoglobin encoding gene to be expressed in certain Antarctic notothenioid fishes, the basis of the substrate specificity of the enzyme fatty acyl-CoA synthetase that is involved in the catabolism of fatty acids, and the functional roles played by different isoforms of creatine phosphokinase in locomotory muscle of Antarctic fish. Results from this study will not only provide insight into the evolutionary biology of the Antarctic notothenioid fishes, but will elucidate important general principles that are applicable to widely different taxa beyond the Antarctic. |
format |
Text |
author |
Sidell, Bruce Vayda, Michael E. |
author_facet |
Sidell, Bruce Vayda, Michael E. |
author_sort |
Sidell, Bruce |
title |
Proteins of Oxygen-Binding and Energy Metabolism in Muscles of Antarctic Fishes: Evolutionary Adjustments to Life at Cold Temperature |
title_short |
Proteins of Oxygen-Binding and Energy Metabolism in Muscles of Antarctic Fishes: Evolutionary Adjustments to Life at Cold Temperature |
title_full |
Proteins of Oxygen-Binding and Energy Metabolism in Muscles of Antarctic Fishes: Evolutionary Adjustments to Life at Cold Temperature |
title_fullStr |
Proteins of Oxygen-Binding and Energy Metabolism in Muscles of Antarctic Fishes: Evolutionary Adjustments to Life at Cold Temperature |
title_full_unstemmed |
Proteins of Oxygen-Binding and Energy Metabolism in Muscles of Antarctic Fishes: Evolutionary Adjustments to Life at Cold Temperature |
title_sort |
proteins of oxygen-binding and energy metabolism in muscles of antarctic fishes: evolutionary adjustments to life at cold temperature |
publisher |
DigitalCommons@UMaine |
publishDate |
2003 |
url |
https://digitalcommons.library.umaine.edu/orsp_reports/104 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1116&context=orsp_reports |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_source |
University of Maine Office of Research Administration: Grant Reports |
op_relation |
https://digitalcommons.library.umaine.edu/orsp_reports/104 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1116&context=orsp_reports |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). |
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