>1r3nB (B:) observed residues (from ATOM records)
paaaplsiasgrlnqtiletgsqfggvarwgqeshefgmrrlagtaldgamrdwftnece
slgckvkvdkignmfavypgknggkptatgshldtqpeagkydgilgvlaglevlrtfkd
nnyvpnydvcvvvwfneegarfarsctgssvwshdlsleeayglmsvgedkpesvydslk
nigyigdtpasykeneidahfelhieqgpiledenkaigivtgvqaynwqkvtvhgvgah
agttpwrlrkdallmsskmivaaseiaqrhnglftcgiidakpysvniipgevsftldfr
hpsddvlatmlkeaaaefdrlikindggalsyesetlqvspavnfhevciecvsrsafaq
fkkdqvrqiwsgaghdscqtaphvptsmifipskdglshnyyeysspeeiengfkvllqa
iinydnyrvirgh