Dear,

This is Shubhrajyoti Panda, research scholar at Birla Institute of Technology, Hyderabad. I am using 6XG5 PDB ID for my work. But in this particular protein I want to show the distance between particular residues. But when I am going to show manually or through command it is showing the following error.

Distance between PHE 31.A CA and GLY 15.A CA: 15.891

But in the protein structure there is only one 45th number residue. But I could not understand why it is showing selected 3 repeatedly.  Kindly help me.