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Arctic adaptation in reindeer The energy saving of a hemoglobin
Author(s) -
Giardina Bruno,
Brix Ole,
Nuutinen Matti,
El Sherbini Said,
Bardgard Astrid,
Lazzarino Giuseppe,
Condò Saverio G.
Publication year - 1989
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(89)81256-6
Subject(s) - hemoglobin , adaptation (eye) , the arctic , oxygen , oxygenation , arctic , atmospheric sciences , environmental science , chemistry , climatology , biology , biochemistry , ecology , physics , oceanography , geology , organic chemistry , neuroscience
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.