>6aa1B (B:) observed residues (from ATOM records)
salrvgtdgiypphsfhaqdgrgeltgfdidlikevahrlnlkveffetavsglitgldt
nrydvlvnvaitperqkkydfsipyiahrvllvvrsdqqdirsfkdltdktvaqilgtdl
srfakelkshlvfshnfeqslqlllskrtdatmipdipffnflerrphdgnlfkiadrmk
dnsavafmmrkgnnkltrsineilcaihldgtykkifdryfdkniissvpgcss