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.
4i51A - 2rfiA of substitution A-Y at 1211
*4i51A: red cartoon and yellow stick
*2rfiA: green cartoon and blue stick
Protein structure alignment:
Protein sequence alignment:
Protein sequence alignment: