Dynein of sperm flagella of oyster beloning to protostomia also has a two‐headed structure
1992; Wiley; Volume: 76; Issue: 3 Linguagem: Inglês
10.1016/0248-4900(92)90433-2
ISSN1768-322X
AutoresShigeo Wada, Makoto Okuno, Kenichi Nakamura, Hideo Mohri,
Tópico(s)Protist diversity and phylogeny
ResumoSummary— An axonemal dynein was purified from the sperm of Crassostrea gigas , an oyster belonging to Protostomia. The molecular masses of component polypeptides were almost equivalent to those of other dyneins. Biochemical and biophysical properties were also quite similar. For example, UV‐cleavage, inhibition of ATPase by vanadate and induction of microtubule gliding were observed with the axonemal dynein. The oyster dynein had a two‐headed structure as had the outer arm dynein of Deuterostomia such as sea urchin, rainbow trout and bull spermatozoa. On the other hand, dyneins of Protozoa are three‐headed particles. From the evolutional point of view, it is likely that the number of heads of dynein molecule decreased when Metazoa evolved from Protozoa.
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