血液在热液喷口管蠕虫中的功能。
Blood function in the hydrothermal vent vestimentiferan tube worm.
出版信息
Science. 1981 Jul 17;213(4505):342-4. doi: 10.1126/science.213.4505.342.
Extracellular hemoglobin in the whole blood of Riftia pachyptila has a high oxygen affinity (P50 = 1.8 millimeters of mercury at 3 degrees C), a moderate decrease in oxygen affinity at higher temperatures (P50 = 2.7 millimeters of mercury at 14 degrees C), a small effect of carbon dioxide on oxygen affinity (Delta log P50/Delta pH =-0.12), and a high oxygen carrying capacity (up to 11 milliliters of oxygen per 100 milliliters of blood). These characteristics are compatible with the high oxygen demand of chemoautotrophic metabolism in the variable vent environment.
裂孔蛤(Riftia pachyptila)全血中的细胞外血红蛋白对氧具有高亲和力（3°C 时 P50=1.8 毫米汞柱），在较高温度下氧亲和力适度降低（14°C 时 P50=2.7 毫米汞柱），二氧化碳对氧亲和力的影响较小（Δlog P50/ΔpH=-0.12），携氧能力高（每 100 毫升血液中可达 11 毫升氧气）。这些特征与可变喷口环境中化能自养代谢的高氧需求相适应。
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