>1u76A (A:) observed residues (from ATOM records)
mfearlvqgsilkkvlealkdlineacwdisssgvnlqsmdsshvslvqltlrsegfdty
rcdrnlamgvnltsmskilkcagnediitlraednadtlalvfeapnqekvsdyemklmd
ldveqlgipeqeyscvvkmpsgefaricrdlshigdavviscakdgvkfsasgelgngni
klsqtseeeavtiemnepvqltfalrylnfftkatplsstvtlsmsadvplvveykiadm
ghlkyylapkied