microtubule-activated kinesin atpase had a km for atp between 10 and 12 x 10 ( -6 ) m and a kapp for microtubules ( i.e. , polymerized tubulin concentration required for a half-maximal activation ) of 12-14 x 10 ( -6 ) m .
C0026046
microtubule
C0041348
tubulin