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Echinobase
ECB-ART-34798
J Cell Biol 1981 Dec 01;913 Pt 1:689-94. doi: 10.1083/jcb.91.3.689.
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Effects of antibodies against dynein and tubulin on the stiffness of flagellar axonemes.

Okuno M , Asai DJ , Ogawa K , Brokaw CJ .


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Antidynein antibodies, previously shown to inhibit flagellar oscillation and active sliding of axonemal microtubules, increase the bending resistance of axonemes measured under relaxing conditions, but not the bending resistance of axonemes measured under rigor conditions. These observations suggest that antidynein antibodies can stabilize rigor cross-bridges between outer-doublet microtubules, by interfering with ATP-induced cross-bridge detachment. Stabilization of a small number of cross-bridge appears to be sufficient to cause substantial inhibition of the frequency of flagellar oscillation. Antitubulin antibodies, previously shown to inhibit flagellar oscillation without inhibiting active sliding of axonemal microtubules, do not increase the static bending resistance of axonemes. However, we observed a viscoelastic effect, corresponding to a large increase in the immediate bending resistance. This immediate bending resistance increase may be sufficient to explain inhibition of flagellar oscillation; but several alternative explanations cannot yet be excluded.

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Genes referenced: dnah3 LOC115925415 tubgcp2

References [+] :
Asai, Effects of antibodies against tubulin on the movement of reactivated sea urchin sperm flagella. 1980, Pubmed, Echinobase