>4rukB (B:) observed residues (from ATOM records)
mnrvlypgtfdpitkghgdlierasrlfdhviiavaaspkknplfsleqrvalaqevtkh
lpnvevvgfstllahfvkeqkanvflrglravsdfeyefqlanmnrqlapdvesmfltps
ekysfisstlvreiaalggdiskfvhpavadalaerfk