Chains and heterogens:
PDB Chain Sequences:
>1enfA (A:) dlhdkseltdlalanaygqynhpfikeniksdeisgekdlifrnqgdsgndlrvkfatad laqkfknknvdiygasfyykcekiseniseclyggttlnseklaqerviganvwvdgiqk etelirtnkknvtlqeldikirkilsdkykiyykdseiskgliefdmktprdysfdiydl kgendyeidkiyednktlksddishidvnlyt