Supplementary Figure 3 : B factors of prefusion ligand-free trimer versus prefusion-to-postfusion movement.

From: Crystal structure, conformational fixation and entry-related interactions of mature ligand-free HIV-1 Env

Supplementary Figure 3

Left panel. Pre-fusion ligand-free trimers of the type 1 fusion glycoproteins of HIV-1, influenza A virus (Influenza) and respiratory syncytial virus (RSV) are shown in ribbon representation with one protomer colored by B-factors (scale shown under each trimers). Middle panel. Same pre-fusion ligand-free trimers are shown with one protomer colored by Cα movement between pre- and post-fusion conformations (with scale shown). Right panel. Relationship between pre-fusion Env B-factor and Cα-subunit movement between pre- and post-fusion conformations.