>1f77B (B:) observed residues (from ATOM records)
dlhdkseltdlalanaygqynhpfikeniksdeisgekdlifrnqgdsgndlrvkfatad
laqkfknknvdiygasfyykcekiseniseclyggttlnseklaqerviganvwvdgiqk
etelirtnkknvtlqeldikirkilsdkykiyykdseiskgliefdmktprdysfdiydl
kgendyeidkiyednktlksddishidvnlyt