Jmol view
The 3D View page visualizes the PDB structures using Jmol (an open-source Java viewer for chemical structures in 3D, http://www.jmol.org/) and provides options to render structures in different styles and colors.
3d20B - 3a2oB of substitution I-V at 154
*3d20B: red cartoon and yellow stick
*3a2oB: green cartoon and blue stick
Protein structure alignment:
Protein sequence alignment:
Protein sequence alignment: