>4xixF (F:) observed residues (from ATOM records)
aawnygevagpptwkgvcatgkrqspiniplntsapkvdaemgefdfaygsfekcdvlnt
ghgtmqvnfpagnlafignmelellqfhfhapsehamdgrryameahlvhknkstgnlav
lgimlepggliknpalstalevapevplakkpspkginpvmllpkkskagtrpfvhypgs
lttppcsegvdwfvfmqpikvpdsqildfmrfvgdnktyatntrplqllnsrlveyel