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.
1xk3A - 1xk1A of substitution G-H at 143
*1xk3A: red cartoon and yellow stick
*1xk1A: green cartoon and blue stick
Protein structure alignment:
Protein sequence alignment:
Protein sequence alignment: