>1keyD (D:) observed residues (from ATOM records)
msvseifvelqgflaaeqdireeirkvvqsleqtareiltllqgvhqdipkrclkarehf
stvkthltslktkfpaeqyyrfhehwrfvlqrlvflaafvvyletetlvtreavteilgi
epdrekgfhldvedylsgvlilaselsrlsvnsvtagdysrplhistfineldsgfrlln
lkndslrkrydglkydvkkveevvydlsirg