>4k5cB (B:) observed residues (from ATOM records)
dlgkklleaawqgqddevrilmangadvnaqdkfgttplhlaadmghleivevllktgad
vnaaatghyfqpyfshsvsyfgetplhlaaemghleivevllkagadvnafadlghtplh
laaqwghleivevllkhgadvnaqdkfgktpfdlaidngnediaevlqkaa