Ciliary beat frequency is controlled by a dynein light chain phosphorylation.


cAMP-dependent phosphorylation of a 29-kDa axonemal polypeptide (p29) increases the swimming speed of permeabilized Paramecium and in vitro translocation velocity of bovine brain microtubules over 22S dynein extracted from Paramecium axonemes. A quantitative relationship between microtubule translocation velocity and beat frequency is developed. We conclude… (More)


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