Harumi Asai

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Microtubule-associated proteins (MAPs) of brain microtubules exhibit an ATPase activity which is markedly enhanced by tubulin and Ca(2+). Addition of S100 protein decreased the tubulindependent Ca(2+)-ATPase activity by about 85%, but did not affect the activity without tubulin. The inhibition by S100 protein was concentration-dependent and the apparent(More)
Ca2+/calmodulin (CaM)-dependent actin-binding proteins (CABPs) of 92, 105, 120 and 135 kDa were purified from squid retina. These proteins were eluted from the CaM affinity column in a Ca2+-dependent manner, and binding of the CABPs to F-actin was regulated by Ca2+/CaM. Electron microscopic observations employing the low-angle rotary shadowing technique(More)
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