Chains and heterogens:
PDB Chain Sequences:
>1xkwA (A:) estsatqppgvttlgkvplkprelpqsasvidherleqqnlfsldeamqqatgvtvqpfq llttayyvrgfkvdsfeldgvpallgntasspqdmaiyerveilrgsngllhgtgnpaat vnlvrkrpqrefaasttlsagrwdryraevdvggplsasgnvrgravaayedrdyfydva dqgtrllygvtefdlspdtlltvgaqyqhidsitnmagvpmakdgsnlglsrdtyldvdw drfkwdtyrafgsleqqlgggwkgkvsaeyqeadsrlryagsfgaidpqtgdggqlmgaa ykfksiqrsldanlngpvrlfglthellggvtyaqgetrqdtarflnlpntpvnvyrwdp hgvprpqigqytspgtttttqkglyalgriklaepltlvvggreswwdqdtpatrfkpgr qftpyggliwdfardwswyvsyaevyqpqadrqtwnseplspvegktyetgikgeladgr lnlslaafridlennpqedpdhpgppnnpfyisggkvrsqgfelegtgyltpywslsagy tytsteylkdsqndsgtrystftprhllrlwsnydlpwqdrrwsvggglqaqsdysvdyr gvsmrqggyalvnmrlgykidehwtaavnvnnlfdrtyyqslsnpnwnnrygeprsfnvs lrgaf
>1xkwA (A:) estsatqppgvttlgkvplkprelpqsasvidherleqqnlfsldeamqqatgvtvqpfq llttayyvrgfkvdsfeldgvpallgntasspqdmaiyerveilrgsngllhgtgnpaat vnlvrkrpqrefaasttlsagrwdryraevdvggplsasgnvrgravaayedrdyfydva dqgtrllygvtefdlspdtlltvgaqyqhidsitnmagvpmakdgsnlglsrdtyldvdw drfkwdtyrafgsleqqlgggwkgkvsaeyqeadsrlryagsfgaidpqtgdggqlmgaa ykfksiqrsldanlngpvrlfglthellggvtyaqgetrqdtarflnlpntpvnvyrwdp hgvprpqigqytspgtttttqkglyalgriklaepltlvvggreswwdqdtpatrfkpgr qftpyggliwdfardwswyvsyaevyqpplspvegktyetgikgeladgrlnlslaafri dlennpqedpdhpgppnnpfyisggkvrsqgfelegtgyltpywslsagytytsteylkd sqndsgtrystftprhllrlwsnydlpwqdrrwsvggglqaqsdysvdyrgvsmrqggya lvnmrlgykidehwtaavnvnnlfdrtyyqslsnpnwnnrygeprsfnvslrgaf