>1xfbB (B:) observed residues (from ATOM records)
hsypalsaeqkkelsdialrivapgkgilaadesvgsmakrlsqigventeenrrlyrqv
lfsaddrvkkciggviffhetlyqkddngvpfvrtiqdkgivvgikvdkgvvplagtdge
tttqgldglsercaqykkdgadfakwrcvlkisertpsalailenanvlaryasicqqng
ivpivepeilpdgdhdlkrcqyvtekvlaavykalsdhhvylegtllkpnmvtpghacpi
kytpeeiamatvtalrrtvppavpgvtflsggqseeeasfnlnainrcplprpwaltfsy
gralqasalnawrgqrdnagaateefikraevnglaaqgkye