Chains and heterogens:
PDB Chain Sequences:
>1fqyA (A:) klfwravvaeflattlfvfisigsalgfkypvgnnqtavqdnvkvslafglsiatlaqsv ghisgahlnpavtlglllscqisifralmyiiaqcvgaivatailsgitssltgnslgrn dladgvnsgqglgieiigtlqlvlcvlattdrrrrdlggsaplaiglsvalghllaidyt gcginparsfgsavithnfsnhwifwvgpfiggalavliydfilap