oldseq = pa.seqString(); //but first store the old sequence
//remove nucleotides form the non-fixed end of the arm
switch (fixedEnd) {
case TemplateHandler.THREEPRIME:
try {
cns.edit(new SimpleSequenceEdit(1, 1, "")); //$NON-NLS-1$
}
catch (SequenceFormatException e) {
throw new UnsupportedOperationException("Invalid sequence"); //$NON-NLS-1$
}