Arctic adaptation in reindeer. The energy saving of a hemoglobin

Previous results [(1988) Arct. Med. Res. 47, 83-88] have shown that hemoglobin from reindeer is characterized by a low overall heat of oxygenation. This particular aspect has been investigated further in a series of precise oxygen equilibrium experiments. The results obtained show a peculiar depende...

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Bibliographic Details
Main Authors: Giardina, B, Brix, O, Nuutinen, M, el Sherbini, S, Bardgard, A, Lazzarino, G, CONDO', SAVERIO GIOVANNI
Other Authors: Condo', Sg
Format: Article in Journal/Newspaper
Language:English
Published: 1989
Subjects:
Animal
Thermodynamic
Human
Hydrogen-Ion Concentration
Temperature
Chloride
Diphosphoglyceric Acid
Cold Temperature
Energy Metabolism
Reindeer
Oxygen
2,3-Diphosphoglycerate
Hemoglobin
Adaptation
Physiological
Protein Conformation
Settore BIO/10 - BIOCHIMICA
Arctic
Online Access:http://hdl.handle.net/2108/54801
Description
Summary:Previous results [(1988) Arct. Med. Res. 47, 83-88] have shown that hemoglobin from reindeer is characterized by a low overall heat of oxygenation. This particular aspect has been investigated further in a series of precise oxygen equilibrium experiments. The results obtained show a peculiar dependence of the temperature effect on the fractional saturation of hemoglobin with oxygen, which could be regarded as a very interesting case of molecular adaptation to extreme environmental conditions.

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