Chains and heterogens:
PDB Chain Sequences:
>1kqzA (A:) ggiaiywgqngnegtltqtcstrkysyvniaflnkfgngqtpqinlaghcnpaaggctiv sngirscqiqgikvmlslgggigsytlasqadaknvadylwnnflggksssrplgdavld gidfaiahgstlywddlarylsayskqgkkvyltaapqcpfpdrylgtalntglfdyvwv qffnnppcqyssgninniinswnrwttsinagkiflglpaapeaagsgyvppdvlisril peikkspkyggvmlwskfyddkngysssildsv