Neutralizing a protein



 Dear CCL users,
 working with proteins it is often desirable to neutralize a charged
 peptide chain. Is there an "easy" method or tool to add counterions to
 charged amino acids located at the protein surface?
 I hope this information is of interest also for other readers...
 Any information is welcome!
 Thanks in advance
 H Lanig
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  Dr. Harald  Lanig                          Computer Chemie Centrum der
     Dipl.-Chem.    	                  Universitaet Erlangen/Nuernberg
                                          Institut fuer Organische Chemie I
  phone: +49(0)9131-856581                        Naegelsbachstr. 25
    fax: +49(0)9131-856565                         D-91052 Erlangen
  email: lanig[ AT ]organik.uni-erlangen.de                 Germany
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