Chains and heterogens:
PDB Chain Sequences:
>1urt_ (-) gtrqspiniqwkdsvydpqlaplrvsydaascrylwntghafqvefddscedsgisggpl gnhyrlkqfhfhwgatdewgsehavdghtypaelhlvhwnstkyenykkasvgenglavi gvflklgahhqalqklvdvlpevrhkdtqvamgdfdpsclmpacrdywtypgslttppla esvtwivqktpvevspsqlsmfrtllfsgrgeeedvmvnnyrplqplrdrklrssfr