REACTIVATED TRITON-EXTRACTED MODELS OF PARAMECIUM - MODIFICATION OF CILIARY MOVEMENT BY CALCIUM-IONS
REACTIVATED TRITON-EXTRACTED MODELS OF PARAMECIUM - MODIFICATION OF CILIARY MOVEMENT BY CALCIUM-IONS
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DOI：
10.1126/science.176.4034.523
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发表时间：
1972-01-01
期刊：
影响因子：
56.9
通讯作者：
KANEKO, H
中科院分区：
文献类型：
--
作者：
NAITOH, Y;KANEKO, H
在三磷酸腺苷和镁离子的溶液中重新激活提取了Triton的草履虫模型。当钙离子浓度低于10 ~（-6）M时，纤毛的搏动方向为正向（向后），当钙离子浓度高于10 ~（-6）M时，纤毛的搏动方向为“反”向（向前）。这些结果支持的建议，睫状逆转，因此向后游泳，活paramedium介导的细胞质钙浓度增加周围的睫状系统的钙依赖性膜对外部刺激的反应。
Triton-extracted models ofParameciumwere reactivated to swim in solutions of adenosine triphosphate and magnesium ions. The cilia beat in the normal direction (toward the rear) when the calcium ion concentration was less than 10-6M, and they beat in the "reversed" direction (toward the front) when calcium ion concentration was raised above 10-6M. These results support the proposal that ciliary reversal, hence backward swimming, of live paramecia is mediated by an increased cytoplasmic calcium concentration around the ciliary system by calcium-dependent membrane responses to external stimuli.