>6gxtB (B:) observed residues (from ATOM records)
dladlfpgfgsewintssgrifarvggdgppllllhgfpqthvmwhrvapklaerfkviv
adlpgygwsdmpesdeqhtpytkramakqlieameqlghvhfalaghdrgarvsyrlald
spgrlsklavldilptyeywqrmnrayalkiyhwsflaqpaplpenllggdpdfyvkakl
aswtragdlsafdpravehyriafadpmrrhvmcedyragayadfehdkidveagnkipv
pmlalwgasgiaqsaatpldvwrkwasdvqgapiesghflpeeapdqtaealvrffs