>1tkoB (B:) observed residues (from ATOM records)
aratagevegsdalrmdadraeqcvdalnadlanvyvlyhqlkkhhwnvegaefrdlhlf
lgeaaetaeevadelaervqalggvphaspetlqaeasvdvededvydirtslandmaiy
gdiieatrehtelaenlgdhatahmlreglieleddahhiehyleddtlvtqgal