Chains and heterogens:
PDB Chain Sequences:
>2a3h_ (-) svveehgqlsisngelvnergeqvqlkgmsshglqwygqfvnyesmkwlrddwginvfra amytssggyiddpsvkekvkeaveaaidldiyviidwhilsdndpniykeeakdffdems elygdypnviyeianepngsdvtwgnqikpyaeevipiirnndpnniiivgtgtwsqdvh haadnqladpnvmyafhfyagthgqnlrdqvdyaldqgaaifvsewgtsaatgdggvfld eaqvwidfmdernlswanwslthkdessaalmpganptggwteaelspsgtfvrekires