>1xqrB (B:) observed residues (from ATOM records)
mrgqrgeveqmksclrvlsqpmpptageaeqaadqqeregalelladlcenmdnaadfcq
lsgmhllvgryleagaaglrwraaqligtcsqnvaaiqeqvlglgalrkllrlldrdacd
tvrvkalfaisclvreqeagllqflrldgfsvlmramqqqvqklkvksafllqnllvghp
ehkgtlcsmgmvqqlvalvrtehspfhehvlgalcslvtdfpqgvrecrepelgleellr
hrcqllqqheeyqeelefcekllqtcfs