Chains and heterogens:
PDB Chain Sequences:
>1kraA (A:) meltprekdklllftaalvaerrlarglklnypesvalisafimegardgksvaslmeeg rhvltreqvmegvpemipdiqveatfpdgsklvtvhnpii
>1kraB (B:) mipgeyhvkpgqialntgratcrvvvenhgdrpiqvgshyhfaevnpalkfdrqqaagyr lnipagtavrfepgqkrevelvafaghravfgfrgevmgpl
>1kraC (C:) snisrqayadmfgptvgdkvrladtelwieveddlttygeevkfgggkvirdgmgqgqml aadcvdlvltnalivdhwgivkadigvkdgrifaigkagnpdiqpnvtipigaateviaa egkivtaggidthihwicpqqaeealvsgvttmvgggtgpaagthattctpgpwyisrml qaadslpvnigllgkgnvsqpdalreqvaagviglkihedwgatpaaidcaltvademdi qvalhsdtlnesgfvedtlaaiggrtihtfhtegaggghapdiitacahpnilpsstnpt lpytlntidehldmlmvchhldpdiaedvafaesrirretiaaedvlhdlgafsltssds qamgrvgevilrtwqvahrmkvqrgalaeetgdndnfrvkryiakytinpalthgiahev gsievgkladlvvwspaffgvkpatvikggmiaiapmgdinasiptpqpvhyrpmfgalg sarhhcrltflsqaaaangvaerlnlrsaiavvkgcrtvqkadmvhnslqpnitvdaqty evrvdgelitsepadvlpmaqryflf