Mechanical coupling in the nitrogenase complex
Fig 7
Top 9 normal modes of the ATP-bound nitrogenase complex (top panels) and their influences on the mechanical coupling between (A) Fe1 and α1β1, (B) Fe1 and Fe2, (C) P-loops in Fe1 and P-loops in Fe2; (D) overlap between the normal modes of the ATP-bound nitrogenase and the vector describing the displacement of the Fe protein that takes place upon ATP hydrolysis as inferred from the ATP- and ADP-bound crystal structures.