private void ValidateModifications(string seq)
{
char[] modifiedChars = PeptideUtils.GetModifiedChar(seq);
if (modifiedChars.Length > 0)
{
foreach (char c in modifiedChars)
{
if (!_sciBuilder.IsModificationDefined(c))
{
throw new ArgumentException(MyConvert.Format("Modification {0} was not defined in SILAC configuration file : {1}.", c, option.SilacParamFile));
}
}
}
}