I have read that every 120 degree rotation of the F1 complex of ATP-synthase can be split into a 30 degree rotation and a 90 degree rotation. In between these two are dwell times, the one before the 90 degree rotation been called the ATP-binding dwell time and the one after been called the interim dwell time and that both of these fall of exponentially. I cannot, however, find a derivation of the probability density function of these dwell times, or there exact form. If anyone knows such a derivation or where to find one this would be much appreciated.