Root mean squared fluctuations (RMSF) of the Cα atoms of (a) p66 and (b) p51 over the concatenated ensemble trajectories of the apo (black), EFV (red) bound and NVP (blue) bound HIV-1 RT simulations. The residues of the NNRTI binding pocket, RnaseH primer grip and active sites are indicated by magenta, dark blue and green dots on the x-axis, respectively. The bars above the graph indicate the locations of the subunits in the sequence; the (F)ingers, (P)alm, (T)humb, (C) connection and (R)NaseH. The p51 αL helix containing residues 395 and 396 in the RNaseH primer grip is indicated by a gray box.