>3j39Z (Z:) observed residues (from ATOM records)
rkimkqgkivivlsgryagrkaiivkthddgtpekpfghalvagidryprkvtkkmgknk
lkkkskvkpflkslnynhlmptrytahdisfeklspkdlkdpvkrkthrfqtrvkfesvy
kegknkwffqklrf