Handle case of a digesting AA group being the last of the sequence
Handle case of a digesting AA group being the last of the sequence

Ignore-this: 96443d1c6acbb4ee4b5bc0e20006f3b4

darcs-hash:20090508050658-9241b-253056760c6a4de94171e2496a3defba3da367cf.gz

tmcdonell/hfx,tmcdonell/hfx,tmcdonell/hfx