>6bu2A (A:) observed residues (from ATOM records)
harhmlatslvtgldhvgiavadldvaiewyhdhlgmilvheeinddqgireallavpgs
aaqiqlmapldessviakfldkrgpgiqqlacrvsdldamcrrlrsqgvrlvyetarrgt
ansrinfihpkdaggvlielvepapklaaa