Hello,
My guess is that these lines have been added externally and does not contain the 3 last columns required for a proper PDB. These 3 columns are the 78, 79 and 80th character of each ATOM lines and can contain the element (77-78) and the charge (79-80) of the atom. WE sometimes also use this column to add a segid information.
In any case, information within these columns is optional and you can leave them blank but you need to keep space for them in your PDB file.
You can find extra information on the PDB format here: http://www.wwpdb.org/documentation/file-format-content/format33/sect9.html#ATOM
I hope this will help,
Mikael