********>Bugfix 24
Author: Ray Luo (problem reported by Jarrod Smith)
Date: 11/08/2006

Programs: ff03ua files

Description: A parameter needed for HID residues is missing from the united
             atom force field files.

Fix: Apply the following patch to $AMBERHOME/dat/leap/parm/frcmod.ff03ua

------------------------------------------------------------------------------
--- frcmod.ff03ua.orig	2006-08-10 19:50:26.000000000 -0700
+++ frcmod.ff03ua	2006-09-06 17:24:14.000000000 -0700
@@ -66,6 +66,7 @@
 C2-CC-NA    70.0      120.00    AA his
 C2-CC-CW    70.0      120.00    AA his
 C2-CC-NB    70.0      120.00    AA his
+C2-CC-CV    70.0      120.00    AA his
 C3-C1-OH    50.0      109.50
 C1-OH-HO    55.0      108.50
 CT-C1-OH    50.0      109.50

------------------------------------------------------------------------------

Temporary workarounds: none.