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钙离子对再活化海胆精子跳动鞭毛手性的调节

Calcium ion regulation of chirality of beating flagellum of reactivated sea urchin spermatozoa.

作者信息

Ishijima S, Hamaguchi Y

机构信息

Biological Laboratory, Faculty of Science, Tokyo Institute of Technology, Japan.

出版信息

Biophys J. 1993 Oct;65(4):1445-8. doi: 10.1016/S0006-3495(93)81210-4.

Abstract

Near an interface, sea urchin spermatozoa swim almost in circles. The direction is usually clockwise at the lower surface of a coverslip and counterclockwise at the upper surface of a glass slide, when viewed from above. Examination of demembranated spermatozoa has shown that Ca2+ regulates the direction of the circular motion of spermatozoa reactivated with adenosine triphosphate (ATP). This finding suggests that Ca2+ changes the chirality of the three-dimensional bending waves of sperm flagella.

摘要

在界面附近,海胆精子几乎是绕圈游动。从上方观察时,通常在盖玻片下表面是顺时针方向,而在载玻片上表面是逆时针方向。对去膜精子的研究表明,钙离子(Ca2+)调节了用三磷酸腺苷(ATP)重新激活的精子的圆周运动方向。这一发现表明,钙离子改变了精子鞭毛三维弯曲波的手性。

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