>1sflA (A:) observed residues (from ATOM records)
hvevvatitpqletliqkinhridaidvlelridqfenvtvdqvaemitklkdsfkllvt
yrtklqggygqftndsylnlisdlaningidmidiewqadidiekhqriithlqqynkev
iishhnfestppldelqfiffkmqkfnpeyvklavmphnkndvlnllqamstfsdtmdck
vvgismsklglisrtaqgvfggaltygcigepqapgqidvtdlkaqvtly