>1xxfD (D:) observed residues (from ATOM records)
qplekiapypqaekgmkrqviqltpqedestlkvelligqtlevdcnlhrlggklenktl
egwgydyyvfdkvsspdftrvvcpdgkkekkfvtaylgdagmlrynsklpivvytpdnvd
vkyrvwkaeekidnavvr