The axoneme of the spider spermatozoon
The axoneme of the spider spermatozoon
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DOI：
10.1080/11250009509356085
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发表时间：
1995-01-01
期刊：
影响因子：
--
通讯作者：
Witalinski, W
中科院分区：
文献类型：
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作者：
Dallai, R;Afzelius, BA;Witalinski, W
蜘蛛精子（Pholcus sp.）的轴丝在用固定剂固定后进行了检查，该固定剂可以使单个原丝可视化。发现轴丝由九个微管加倍器组成，围绕三个微管单线，形成一个 9 + 3 模式。三个中央微管中的每一个都包含 13 根原丝，两侧有两条短丝，可能相当于中央鞘。远端中央微管稍微变平。九个倍增器具有内部和外部动力蛋白臂，并且具有与常规 9 + 2 轴丝中的倍增器相同的解剖结构。尽管 9 + 2 鞭毛中的九个倍增器相对于中央微管具有不平等的位置，因此在鞭毛中的任务不平等，但对于蜘蛛精子轴丝来说情况并非如此。
The axoneme of the spider spermatozoon (Pholcus sp.) has been examined after fixation with a fixative that permits the visualization of the individual protofilaments. The axoneme was found to consist of nine microtubular doublers in a circle around three microtubular singlets, thus a 9 + 3 pattern. Each of the three central microtubules contains 13 protofilaments and is flanked by two short filaments, maybe the equivalent of the central sheath. Distally the central microtubules are slightly flattened. The nine doublers have inner and outer dynein arms and have the same anatomy as have the doublers in regular 9 + 2 axonemes. Whereas the nine doublers in 9 + 2 flagella have unequal positions in relation to the central microtubules and hence unequal tasks in flagellation, the same is nor true for the spider sperm axoneme.