sodium-orthovanadate ( 100-700 microm ) added to purified pig brain microtubule protein ( molar ratios 13-90 moles vanadate/mole tubulin ) inhibits to a considerable extent the assembly ( up to 65 % ) and the disassembly rates ( up to 60 % ) of microtubules , as determined by turbidimetry .
C0041348
tubulin
C0026046
microtubules