>6xftA (A:) observed residues (from ATOM records)
spygpearaelssrlttlrntlapatndprylqacggeklnrfrdiqcrrqtavradlna
nyiqvgntrtiacqyplqsqleshfrmlaenrtpvlavlassseianqrfgmpdyfrqsg
tygsitveskmtqqvglgdgimadmytltireagqktisvpvvhvgnwpdqtavssevtk
alaslvdqtaetkrnmyeskgssavaddsklrpvihcragvgrtaqligamcmndsrnsq
lsvedmvsqmrvqrngimvqkdeqldvliklaegqgrpllns