>3p61B (B:) observed residues (from ATOM records)
mdvmnrlilamdlmnrddalrvtgevreyidtvkigyplvlsegmdiiaefrkrfgcrii
adfkvadipetnekicratfkagadaiivhgfpgadsvraclnvaeemgrevflltemsh
pgaemfiqgaadeiarmgvdlgvknyvgpstaperlsrlreiigqdsflispgvgaqggd
pgetlrfadaiivgrsiyladnpaaaaagiiesikdll