Amber-param-phosphate

From: Pierre Mignon <pmignon[ AT ]vub.ac.be>
Subject: Amber-param-phosphate
Date: Wed, 2 Oct 2002 14:27:03 +0200 (MET DST)

Hello,
 I use Amber since a few weeks and I have problems for the parameterization of a
 phosphate group such as PO3H - . I defined the type of each atoms but when I try
 to minimize, it stops because the H and one O are to close.
 Types :
 P : P
 O : O2
 O : O2
 O : OH
 H : HO
 Any suggestions and/or help ?
 Thank's in advance.
 Pierre.
 Mignon Pierre
 PhD student
 Free University of Brussel (VUB)
 Dienst Algemene Chemie (ALGC)
 Pleinlaan, 2
 1050 Brussels
 Belgium
 Tel + 32 2 629 35 16
 Fax + 32 2 629 33 17
 e-mail pmignon[ AT ]vub.ac.be