Chains and heterogens:
PDB Chain Sequences:
>3adk_ (-) meeklkkskiifvvggpgsgkgtqcekivqkygythlstgdllraevssgsargkmlsei mekgqlvpletvldmlrdamvakvdtskgflidgyprevkqgeeferkigqptlllyvda gpetmtkrllkrgetsgrvddneetikkrletyykatepviafyekrgivrkvnaegsvd dvfsqvcthldtlk