Kinesin-13 differs from other kinesins because it:
Kinesin superfamily generally couples ATP hydrolysis to processive stepping for cargo transport using hand over hand mechanism but kinesin-13 family including mitotic centromere associated kinesin MCAK KIF2C and KIF2A exhibits depolymerase activity instead of transport. These kinesins possess central motor domain flanked by N and C termini diffuse along microtubule lattice without directional ATP dependent stepping and concentrate at ends via one dimensional diffusion to both tips. At tip they stabilize curved protofilament conformation accelerating removal of tubulin subunits and inducing cat
Ref: Walczak et al., Annu Rev Cell Dev Biol – Kinesin-13 depolymerase activity mechanism classification.
