Chains and heterogens:
PDB Chain Sequences:
>1hw0A (A:) lfwravvaeflattlfvfisigsalgfkypvgnnqtavqdnvkvslafglsiatlaqsvg hisgahlnpavtlglllscqisifralmyiiaqcvgaivatailsgitssltgnslgrnd ladgvnsgqglgieiigtlqlvlcvlattdrrrrdlggsaplaiglsvalghllaidytg cginparsfgsavithnfsnhwifwvgpfiggalavliydfila