distance
0 nm
best
—
ATP steps
0
status
walking
controls
Q
left head — swing forward
W
right head — swing forward
O
left head — burn ATP, lock to lattice
P
right head — burn ATP, lock to lattice
A head only grips the microtubule once its ATP-lock is far enough along. Swing a head forward with Q/W then lock it with O/P — real kinesin steps hand-over-hand, one head releasing only once the other is bound, roughly 8nm per step, powered by one ATP hydrolyzed per step. Let both heads go unbound at once and thermal jiggling in the cytoplasm sweeps the whole motor off the lattice.