>3d7nA (A:) observed residues (from ATOM records)
ssntvvvyhsgyghthrmaeavaegaeatlhaidaegnlsedgwaaldaadaiifgtpty
mggpswqfkkfadasskpwfsakwqdkvfggftnsaslngdklntlqylvllagqhgglw
vslgyiapmaqsemsvgdletarlygarvanvarqhk