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.
1q4gA - 3n8wB of substitution R-Q at 120
*1q4gA: red cartoon and yellow stick
*3n8wB: green cartoon and blue stick
Protein structure alignment:
Protein sequence alignment:
Protein sequence alignment: