in view of the calcium-induced increase in tubulin binding to islet subcellular fractions , and of the high affinity of tubulin and secretory vesicles for calcium , it is suggested that a calcium stimulated bridge - eventually microfilamentous in nature - might link the growing microtubules to the secretory vesicles and could , as such , participate in the intracellular transport of the secretory product .
C0041348
tubulin
C0026046
microtubules