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.
1sqpK - 2fyuK of substitution G-S at 22
*1sqpK: red cartoon and yellow stick
*2fyuK: green cartoon and blue stick
Protein structure alignment:
Protein sequence alignment:
Protein sequence alignment: