>4f2nB (B:) observed residues (from ATOM records)
lcyhtlphlrypaelptlgfnykdgiqpvmsprqlelhyskhhsayvdklntlgkgyegk
tieeiilattgineskvmfnqaaqhfnhsffwkclspggkpmpktlenaiakqfgsvddf
mvsfqqagvnnfgsgwtwlcvdpqtkellidstsnagcpltsglrpiftadvwehayykd
fenrradylkelwqivdwefvchmyeratk