Chains and heterogens:
PDB Chain Sequences:
>1hf6A (A:) svveehgqlsisngelvnergeqvqlkgmsshglqwygqfvnyesmkwlrddwginvfra amytssggyiddpsvkekvkeaveaaidldiyviidwhilsdndpniykeeakdffdems elygdypnviyeianepngsdvtwgnqikpyaeevipiirnndpnniiivgtgtwsqdvh haadnqladpnvmyafhfyagthgqnlrdqvdyaldqgaaifvsewgtsaatgdggvfld eaqvwidfmdernlswanwslthkdessaalmpganptggwteaelspsgtfvrekires