>1xffB (B:) SEQRES residues
cgivgaiaqrdvaeilleglrrleyrgydsaglavvdaeghmtrlrrlgkvqmlaqaaee
hplhggtgiahtrwathgepsevnahphvsehivvvhngiienheplreelkargytfvs
etdteviahlvnwelkqggtlreavlraipqlrgaygtvimdsrhpdtllaarsgsplvi
glgmgenfiasdqlallpvtrrfifleegdiaeitrrsvnifdktgaevkrqdiesnlqy