Figure 3.

The nearest amino-acid environment of the chromophore in the structures of laRFP (a) and laGFP (b). Hydrogen bonds (≤3.3 Å) are shown as blue dashed lines, water molecules (W) as red spheres and van der Waals contacts (≤3.9 Å) as black ‘eyelashes’ (this figure was prepared with LIGPLOT/HBPLUS; Wallace et al., 1995 ▶).