Chains and heterogens:
PDB Chain Sequences:
>3u1rA (A:) msklkekaalsvnptfaangtssaftqvdnfshfydrgnhlvngkpsftvdqaadqltrs gaswydlngdgvinlsytfltspppgyasrglgtfssfsglqkeqaklsleswadvakvt ftegpaargddghmtfanfsasnggaafaylpnssrkgeswylinkdydvnktpgegnyg rqtltheightlglshpgdynagngnpsyrdavygedtraysvmsywsekntgqvftktg egayasapllddiaavqklyganmetragdtvygfnstadrdyysatsatdklifsvwdg ggndtldfsgfsqnqkinlaagsfsdvggmtgnvsiaqgvtienaiggsgndlllgnaas nilkggagndiiyggggadklwggsgsdtfvyrevsdstpkaadtlmdfqtgldkidltg ithlsglnfvnaftgqagdavvsynqasnagslqvdfsghgvadflittvgqvatydiva
>3u1rA (A:) gtssaftqvdnfshfydrgnhlvngkpsftvdqaadqltrsgaswydlngdgvinlsytf ltspppgyasrglgtfssfsglqkeqaklsleswadvakvtftegpaargddghmtfanf sasnggaafaylpnssrkgeswylinkdydvnktpgegnygrqtltheightlglshpgd ynpsyrdavygedtraysvmsywsekntgqvftktgegayasapllddiaavqklyganm etragdtvygfnstadrdyysatsatdklifsvwdgggndtldfsgfsqnqkinlaagsf sdvggmtgnvsiaqgvtienaiggsgndlllgnaasnilkggagndiiyggggadklwgg sgsdtfvyrevsdstpkaadtlmdfqtgldkidltgithlsglnfvnaftgqagdavvsy nqasnagslqvdfsghgvadflittvgqvatydiva