I am trying to run docking experiment with YY1 protein DNA complex and a protein of my interest using HADDOCK SERVER 2.2 version. i am getting an error as "There was an inconsistency in your data. Error message-Second pdb file contains an elemental ion ZN without specified charge". Could any one help me to suggest me what changes should I bring in the pdb file of YY1-DNA complex so that I can perform docking. Thanks for ur help