北极生活适应性——I. 驯鹿血红蛋白的功能。
Arctic life adaptation--I. The function of reindeer hemoglobin.
作者信息
Giardina B, Condò S G, el Sherbini S, Mathisen S, Tyler N, Nuutinen M, Bårdgard A, Brix O
机构信息
Department of Experimental Medicine and Biochemical Sciences, II University of Rome, Italy.
出版信息
Comp Biochem Physiol B. 1989;94(1):129-33. doi: 10.1016/0305-0491(89)90022-9.
PMID:2598627
Abstract
- The functional properties of hemoglobin from the reindeer (Rangifer tarandus tarandus L.) are characterized as a function of pH, temperature and organic phosphate concentration. 2. Alongside overall similarities shared with most vertebrate hemoglobins, hemoglobin from the reindeer shows significant differences with respect to the effect of both organic phosphates and chloride anions. 3. The limited effect of temperature on oxygen binding (delta H = -4 kcal/mol O2) could be regarded as an interesting case of molecular adaptation to extreme environmental conditions.
摘要
- 作为pH值、温度和有机磷酸盐浓度的函数，对驯鹿（Rangifer tarandus tarandus L.）血红蛋白的功能特性进行了表征。2. 除了与大多数脊椎动物血红蛋白具有总体相似性外，驯鹿血红蛋白在有机磷酸盐和氯离子阴离子的影响方面存在显著差异。3. 温度对氧结合的影响有限（ΔH = -4千卡/摩尔O2），这可被视为分子适应极端环境条件的一个有趣例子。
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