>4lo2A (A:) observed residues (from ATOM records)
nslndkivtisckadtnlffyqvagnvslfqqtrnylerwrliydsnkaaykiksmdihn
tnlvltwnapthnistqqdsnadnqywlllkdignnsfiiasyknpnlvlyadtvarnlk
lstlnnsnyikfiiedyiisdlnnftckispildlnkvvqqvdvtnlnvnlytwdygrnq
kwtiryneekaayqffntilsngvltwifsngntvrvsssndqnndaqywlinpvsdtde
tytitnlrdttkaldlyggqtangtaiqvfnyhgddnqkwnirnpp