Before revision:  DDD movies of the\textit{Saccharomyces cerevisiae V-ATPase are used to demonstrate that the algorithm is able to produce physically reasonable trajectories for a 900 kDa membrane protein complex .
After revision:  DDD movies of the\textit{ V-ATPase are used to demonstrate that the algorithm is able to produce physically reasonable trajectories for a 900 kDa membrane protein complex .