The thermostability of haemoglobins from the hot-spring fish, Oreochromis alcalicus grahami: Comparisons with antarctic and temperate species

Franklin, CE, Crockford, T, Johnston, IA and Kamunde, C (1994) The thermostability of haemoglobins from the hot-spring fish, Oreochromis alcalicus grahami: Comparisons with antarctic and temperate species. Journal of Thermal Biology, 19 4: 277-280. doi:10.1016/0306-4565(94)90051-5


Author Franklin, CE
Crockford, T
Johnston, IA
Kamunde, C
Title The thermostability of haemoglobins from the hot-spring fish, Oreochromis alcalicus grahami: Comparisons with antarctic and temperate species
Journal name Journal of Thermal Biology   Check publisher's open access policy
ISSN 0306-4565
Publication date 1994-01-01
Sub-type Article (original research)
DOI 10.1016/0306-4565(94)90051-5
Volume 19
Issue 4
Start page 277
End page 280
Total pages 4
Language eng
Subject 1100 Agricultural and Biological Sciences
1314 Physiology
Abstract 1. 1. The thermostability of haemoglobin was measure in three species of fish living at different environmental temperatures (ET). 2. 2. The time (min) for 50% denaturation (T1/2d) of the haemoglobin at 2 mg ml-1 in 50 mM phosphate buffer, pH 7.3 was 46.4±1.7 for Oreochromis alcalicus grahami (ET, 35 to 42°C), 43.1±1.9 for Oreochromis niloticus (ET, 18 to 26°C) and 19.2±0.3 for the Antarctic teleost, Notothenia coriiceps (ET, -1.5 to 1°C) (Mean ±SEM, N=5-7 preparation). In contrast, T1/2d for haemoglobin from birds and mammals is usually in excess of 500 min. 3. 3. These results suggest that the lower thermostability of haemoglobins in fish relative to birds and mammals is not solely a function of differences in body temperature.
Keyword blood
Haemoglobin
Lake Magadi
Notothenia coriiceps
Oreochromis alcalicus grahami
Oreochromis niloticus
temperature
tilapil
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Wed, 30 Mar 2016, 03:25:26 EST by Gail Walter