Chains and heterogens:
PDB Chain Sequences:
>1c5kA (A:) grpigvvpfqwagpgaapediggivaadlrnsgkfnpldrarlpqqpgsaqevqpaawsa lgidavvvgqvtpnpdgsynvayqlvdtggapgtvlaqnsykvnkqwlryaghtasdevf ekltgikgafrtriayvvqtnggqfpyelrvsdydgynqfvvhrspqplmspawspdgsk layvtfesgrsalviqtlangavrqvasfprhngapafspdgsklafalsktgslnlyvm dlasgqirqvtdgrsnnteptwfpdsqnlaftsdqagrpqvykvninggapqritwegsq nqdadvssdgkfmvmvssnggqqhiakqdlatggvqvlsstfldetpslapngtmviyss sqgmgsvlnlvstdgrfkarlpatdgqvkfpawspyl