>4bf4P (P:) observed residues (from ATOM records)
sppvldlgalgqdfaadpyptyarlraegpahrvrtpegnevwlvvgydraravladprf
skdwrnsttplteaeaalnhnmlesdpprhtrlrklvareftmrrvellrprvqeivdgl
vdamlaapdgradlmeslawplpitvisellgvpepdraafrvwtdafvfpddpaqaqta
maemsgylsrlidskrgqdgedllsalvrtsdedgsrltseellgmahillvaghettvn
liangmyallshpdqlaalradmtlldgaveemlryegpvesatyrfpvepvdldgtvip
agdtvlvvladahrtperfpdphrfdirrdtaghlafghgihfcigaplarleariavra
llercpdlaldvspgelvwypnpmirglkalpirwr