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At least 883 records · Page 49Linked to original sources
PubMed1991

Claws of cilia: further observation of ciliated epithelium in neurenteric cyst.

Claw-like projections and related structures on cilium tips in neurenteric cyst epithelium are described. The ciliary claws are about 20 nm in length and just beneath them four parallel electron-dense areas or lines are discernible. Similar structures were also observed in another case of neurenteric cyst. These structures are very similar to those reported previously, and it is suggested that they are commonly present in various ciliated epithelia in Man.

Child, Preschool↗
PubMed1990

Self-interaction of dynein from Tetrahymena cilia.

The molecular mass (Mr) and enzymic activity of the larger dynein species from Tetrahymena thermophila has been studied in the high (600 mM) to low (40 mM) ionic strength range. The apparent Mr is found to vary with both ionic strength (by sedimentation velocity and quasi elastic light scattering analysis) and with protein concentration at low ionic strength (by sedimentation equilibrium analysis). These data indicate a strong self-interaction, resulting in dimer formation under low salt conditions. There is no evidence for the formation of species of higher than dimeric mass. A molecular mass for the dynein monomer of 1.64 x 10(6) daltons has been determined, a value rather lower than previous published estimates. The ATPase activity of dynein increases with increasing ionic strength. The possible relationship between this effect and the self-association phenomenon is discussed.

Adenosine Triphosphatases↗