对沙蚕血红蛋白呼吸特性的监测有意义吗？
Is monitoring of respiratory properties of the haemoglobin of the Lugworm Arenicola marina meaningfull?
机构信息
Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB, Den Burg-Texel, The Netherlands.
出版信息
Environ Monit Assess. 1986 Nov;7(3):273-83. doi: 10.1007/BF00418020.
Haemoglobin in Arenicola has a high oxygen affinity, with a half saturation oxygen pressure of about 180 Pa at pH 7.4 and 15°C. The oxygen affinity decreases with increasing copper concentration in the blood to about 300 Pa at pH 7.4, 15°C. at a copper concentration of 35 μg ml(-1). Copper exerts only a slight influence on the subunit cooperativity in oxygen binding. The oxygen affinity, subunit cooperativity and the Bohr effect are pH dependent. Copper affects the functioning of the blood by inhibiting oxygen binding to the haemoglobin in the respiratory area and oxygen delivery in the tissues.
沙蚕血红蛋白对氧的亲和力高，在 pH 值为 7.4 和 15°C 时，半饱和氧分压约为 180 帕。随着血液中铜浓度的增加，氧亲和力降低，在 pH 值为 7.4、15°C 和铜浓度为 35 μg ml(-1)时，氧亲和力约为 300 帕。铜对氧结合的亚基协同作用只有轻微的影响。氧亲和力、亚基协同作用和波尔效应都依赖于 pH 值。铜通过抑制呼吸区血红蛋白与氧的结合以及组织中的氧输送来影响血液的功能。
Zotero 插件