>4a6aB (B:) observed residues (from ATOM records)
mllsdrdlraeissgrlgidpfddtlvqpssidvrldclfrvfnntrythidpakqqdel
tslvqpvdgepfvlhpgefvlgstlelftlpdnlagrlegksslgrlgllthstvgfidp
gfsghitlelsnvanlpitlwpgmkigqlcmlrltspsehpygssragskyqgqrgptps
rsyqnfir