Chains and heterogens:
PDB Chain Sequences:
>1eu4A (A:) nsynttnrhnleslykhdsnlieadsiknspdivtshmlkysvkdknlsvffekdwisqe fkdkevdiyalsaqevcecpgkryeafggitltnsekkeikvpvnvwdkskqqppmfitv nkpkvtaqevdikvrkllikkydiynnreqkyskgtvtldlnsgkdivfdlyyfgngdfn smlkiysnneridstqfhvdvsis