>4l7bB (B:) observed residues (from ATOM records)
apkvgrliytaggyfrqslsyleaynpsdgtwldladlqvprsglagcvvggllyavggr
nnspdgntdssaldcynpmtnqwspcapmsvprnrigvgvidghiyavggshgcihhnsv
eryeperdewhlvapmltrrigvgvavlnrllyavggfdgtnrlnsaecyypernewrmi
tamntirsgagvcvlhnciyaaggydgqdqlnsverydvetetwtfvapmkhrrsalgit
vhqgriyvlggydghtfldsvecydpdtdtwsevtrmtsgrsgvgvavtleh