I am working on pymol recently and there is one thing i dont understand. When i select a residue on the sequence tab i see on the visualisation window that it picks it as some dots are rounding the residue, however there are some dots that appear beyond my residue. Is there anyone who can explain about this to me as i was not avaliable to find it on my search. Below i am also attaching a screen shot. By the way i deleted the solvents and there are no hydrogen atoms.
As you can see below i picked only one residue which is Threonine on position 185 but selection shows some dots that are beyond my selection and this happens for every residue that i pick.
Thanks in advance.