>2y4lB (B:) observed residues (from ATOM records)
slvvfpfkhehpevllhnvrvaaahprvhevlcigyerdqtyeaveraapeisratgtpv
svrlqerlgtlrpgkgdgmntalryfleetqwerihfydaditsfgpdwitkaeeaadfg
yglvrhyfprastdamitwmitrtgfallwphtelswieqplggellmrrevaamlyede
rvrrrsdwgidtlytfvtvaagvsiyecyipegklygglddlrtmlvecfaaiqslqhev
vgqpaihrqehphrvpvhiaervgydveatlhrlmqhwtprqvellelfttpvreglrtc
qrrpafnfmdemawaatyhvllehfqpgdpdweellfklwttrvlnytmtvalrgydyaq
qylyrmlgryryqaale