>4r8rB (B:) observed residues (from ATOM records)
etlgekwkkklnqlsrkefdlykksgitevdrteakeglkrgetthhavsrgsaklqwfv
ernmvipegrvidlgcgrggwsyycaglkkvtevrgytkggpgheepvpmstygwnivkl
msgkdvfylppekcdtllcdigesspsptveesrtirvlkmvepwlknnqfcikvlnpym
ptviehlerlqrkhggmlvrnplsrnsthemywisngtgnivssvnmvsrlllnrftmth
rrptiekdvdlgagtr