>4b7sB (B:) observed residues (from ATOM records)
vldlgalgqdfaadpyptyarlraegpahrvrtpegnevwlvvgydraravladprfskd
wrnsttplteaeaalnhnmlesdpprhtrlrklvareftmrrvellrprvqeivdglvda
mlaapdgradlmeslawplpitvisellgvpepdraafrvwtdafvfpddpaqaqtamae
msgylsrlidskrgqdgedllsalvrtsdedgsrltseellgmahillvaghettvnlia
ngmyallshpdqlaalradmtlldgaveemlryegpvesatyrfpvepvdldgtvipagd
tvlvvladahrtperfpdphrfdirrdtaghlafghgihfcigaplarleariavralle
rcpdlaldvspgelvwypnpmirglkalpirwr