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Comparison of mitochondrial proton l...

Duong, Cindy Ann.

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Comparison of mitochondrial proton leak rates in one endothermic and two ectothermic shark species.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Comparison of mitochondrial proton leak rates in one endothermic and two ectothermic shark species./
Author:	Duong, Cindy Ann.
Description:	69 p.
Notes:	Source: Masters Abstracts International, Volume: 43-06, page: 2069.
Contained By:	Masters Abstracts International43-06.
Subject:	Biology, Animal Physiology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1426305
ISBN:	9780542073434

Comparison of mitochondrial proton leak rates in one endothermic and two ectothermic shark species.
Duong, Cindy Ann.

Comparison of mitochondrial proton leak rates in one endothermic and two ectothermic shark species. - 69 p.

Source: Masters Abstracts International, Volume: 43-06, page: 2069.

Thesis (M.S.)--California State University, Fullerton, 2005.

Lamnid sharks can elevate the temperature of their aerobic locomotor muscle and viscera above water temperature because these tissues are perfused with counter-current heat exchangers. I proposed that these tissues are also specialized for thermogenesis by having a high rate of mitochondrial proton leak, an intrinsic property of the inner mitochondrial membrane whereby protons bypass ATP synthase as they return to the matrix and dissipate energy. Proton leak rates were measured in isolated red muscle and liver mitochondria of three shark species. I hypothesized that the endothermic shortfin mako would have a higher proton leak rate in both tissues than the ectothermic blue shark and leopard shark. Proton leak rates were higher in red muscle than in liver for all three species, but the rate per mg of mitochondrial protein did not differ significantly between endothermic and ectothermic sharks for either tissue. The results suggest that mitochondria from endothermic tissues of the mako shark are not specialized for thermogenesis.

ISBN: 9780542073434Subjects--Topical Terms:

1017835
Biology, Animal Physiology.

Comparison of mitochondrial proton leak rates in one endothermic and two ectothermic shark species.
LDR:01970nmm 2200289 4500 001 1824001
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035 $a (UnM)AAI1426305
035 $a AAI1426305
040 $a UnM $c UnM
100 1 $a Duong, Cindy Ann. $3 1913094
245 1 0 $a Comparison of mitochondrial proton leak rates in one endothermic and two ectothermic shark species.
300 $a 69 p.
500 $a Source: Masters Abstracts International, Volume: 43-06, page: 2069.
500 $a Chair: Kathryn A. Dickson.
502 $a Thesis (M.S.)--California State University, Fullerton, 2005.
520 $a Lamnid sharks can elevate the temperature of their aerobic locomotor muscle and viscera above water temperature because these tissues are perfused with counter-current heat exchangers. I proposed that these tissues are also specialized for thermogenesis by having a high rate of mitochondrial proton leak, an intrinsic property of the inner mitochondrial membrane whereby protons bypass ATP synthase as they return to the matrix and dissipate energy. Proton leak rates were measured in isolated red muscle and liver mitochondria of three shark species. I hypothesized that the endothermic shortfin mako would have a higher proton leak rate in both tissues than the ectothermic blue shark and leopard shark. Proton leak rates were higher in red muscle than in liver for all three species, but the rate per mg of mitochondrial protein did not differ significantly between endothermic and ectothermic sharks for either tissue. The results suggest that mitochondria from endothermic tissues of the mako shark are not specialized for thermogenesis.
590 $a School code: 6060.
650 4 $a Biology, Animal Physiology. $3 1017835
650 4 $a Biology, Zoology. $3 1018632
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
690 $a 0433
690 $a 0472
690 $a 0792
710 2 0 $a California State University, Fullerton. $3 1017845
773 0 $t Masters Abstracts International $g 43-06.
790 1 0 $a Dickson, Kathryn A., $e advisor
790 $a 6060
791 $a M.S.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1426305