细胞质游离钙与阿米巴样运动。
Cytoplasmic free calcium and amoeboid movement.
作者信息
Cobbold P H
出版信息
Nature. 1980 Jun 12;285(5765):441-6. doi: 10.1038/285441a0.
DOI:10.1038/285441a0
PMID:6772956
Abstract
Measurements with the Ca2+ -sensitive photoprotein aequorin show that locomotion in the amoeba Chaos carolinense occurs without changes in the aequorin signal and that not more than 0.025% of the cytoplasm can exist at the micromolar threshold concentration for contraction. The results do not support the hypothesis that cytoplasmic streaming is under the control of changes in the cytoplasmic free Ca2+ concentration.
摘要
使用对钙离子敏感的光蛋白水母发光蛋白进行的测量表明，在卡罗琳多核变形虫中的运动发生时，水母发光蛋白信号没有变化，并且在微摩尔收缩阈值浓度下，细胞质中存在的量不超过0.025%。这些结果不支持细胞质流动受细胞质游离钙离子浓度变化控制这一假说。
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