Functions of Invertebrate Hemoglobins with Special Reference to Adaptations to Environmental Hypoxia
Functions of Invertebrate Hemoglobins with Special Reference to Adaptations to Environmental Hypoxia
复制标题
无脊椎动物血红蛋白的功能特别是适应环境缺氧
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
R. Weber
中科院分区：
文献类型：
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作者：
R. Weber
本文综述了无脊椎动物血红蛋白（Hb）的氧结合特性和一些相关的结构特征，以及自然界中影响氧结合功能的环境条件（特别是在应激生境中）。与脊椎动物相比，无脊椎动物血红蛋白在功能特性上显示出惊人的变化，这在动物的主要系统群中以及在色素的不同组织学和分子类别中是明显的。这种变异性主要表现为对含血红蛋白的无脊椎动物在自然界中所处的各种环境条件的适应，但也反映了某些器官的功能，这些功能决定了血红蛋白在生活中工作的内部条件。这些适应似乎是唯一针对优化氧气从环境源到线粒体燃烧位点的转移。巨大的结构和功能的复杂性，无脊椎动物的血红蛋白系统可能会很好地补偿减少组织在器官水平相比，在脊椎动物转移更多的监管负担的分子水平。
The oxygen-binding properties and some associated structural features of invertebrate hemoglobins (Hb) are reviewed together with the environmental conditions (particularly in stressful habitats) that influence oxygen-binding functions in nature. Compared to the vertebrates invertebrate Hbs display a spectacular variation in functional properties, which is manifest within the major systematic groups of animals and within the different histological and molecular categories of the pigment. This variability is seen primarily to represent adaptations to the wide range of environmental conditions to which Hb-bearing invertebrates are subjected in nature but also to reflect certain organismic functions, which determine the internal conditions under which the Hbs work in life. These adaptations appear to be uniquely directed towards optimizing the transfer of oxygen from the environmental source to the mitochondrial combustion sites. The immense structural and functional complexity of invertebrate Hb systems may well compensate for a decreased organization at the organ level compared to that in vertebrates shifting more of the regulatory burden to the molecular level.