Chains and heterogens:
PDB Chain Sequences:
>1dknA (A:) qsepelklesvvivsrhgvraptkatqlmqdvtpdawptwpvklgwltprggeliaylgh yqrqrlvadgllakkgcpqsgqvaiiadvdertrktgeafaaglapdcaitvhtqtdtss pdplfnplktgvcqldnanvtdailsraggsiadftghrqtafrelervlnfpqsnlclk rekqdescsltqalpselkvsadnvsltgavslasmlteifllqqaqgmpepgwgritds hqwntllslhnaqfyllqrtpevarsratplldliktaltphppqkqaygvtlptsvlfi aghdtnlanlggalelnwtlpgqpdntppggelvferwrrlsdnsqwiqvslvfqtlqqm rdktplslntppgevkltlagceernaqgmcslagftqivnearipacsl