>1w74B (B:) observed residues (from ATOM records)
latatatlhtnrgdikialfgnhapktvanfvglaqgtkdystqnasggpsgpfydgavf
hrviqgfmiqggdptgtgrggpgykfadefhpelqfdkpyllamanagpgtngsqffitv
gktphlnrrhtifgevidaesqrvveaisktatdgndrptdpvviesitis