>3bfkB (B:) observed residues (from ATOM records)
yydylfkivligdsgvgksnllsrftrdefnleskstigvefatksiqlknnkiikaqiw
dtagqeryraitsayyrgavgallvyditkknsfeniekwlkelrdnadsnivillvgnk
sdlkhlrvindndatqyakkeklafietsaleatnvelafhqllneiynvrqkkqatkn