>1x91A (A:) observed residues (from ATOM records)
ssemsticdktlnpsfclkflntkfasanlqalakttldstqaratqtlkklqsiidggv
dprsklayrscvdeyesaignleeafehlasgdgmgmnmkvsaaldgadtclddvkrlrs
vdssvvnnsktiknlcgialvisnmlprn