Figure 3. Kip2 is a low-force motor.
(A) Stall force measurement tace. Sampling rate: 10 kHz, raw data (gray), boxcar filtered to 50 Hz (black). A force of 0.5 N corresponds to a displacement of about 17 nm. (B) Time trace for a slip event under 3 pN assisting force. Sampling rate: 20 kHz, raw data (light cyan), boxcar filtered to 400 Hz (dark cyan). (C) Kip2 force-velocity curve: positive is a hindering (load) force and negative is an assisting force. Open symbols include slip events. Error bars are standard errors of the mean.