Spermatotopsis similis basal apparatus tour.
The left fibers (sf’s).
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Spermatotopsis similis basal apparatus tour. The left fibers (sf’s). |
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The left fibers are composed of BAp95 and link specific basal body triplets to the five-membered microtubular roots. The left fiber attached to bb no. 1 is (the older bb) is much more prominent than its counterpart at bb no. 2 (the younger bb). BAp95 is therefore a molecular marker for the developmental state of the basal bodies. |
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| 1sf (right side): A-C: Consecutive transverse sections of basal body 1. The 1s-fiber (arrowheads) has a wedge-shaped structure and is attached to three triplets of the basal body. The connection to the root microtubules (1s-root) is formed by a flexible, hinge-like structure. D: Longitudinal section through the 1s-fiber (arrowhead). 2sf (left side): A-C: Consecutive transverse sections of basal body 2. The 2s-fiber (arrowheads) is attached only to two triplets and is much smaller than the corresponding fiber at basal body 1, but shows the same flexible attachment side to the root microtubules. D: Longitudinal section through the 2s-fiber (arrowhead). | ||||||||||