>4in4A (A:) observed residues (from ATOM records)
pkvgrliytaggyfrqslsyleaynpsdgtwlrladlqvprsglagcvvggllyavggrn
nspdgntdssaldcynpmtnqwspcapmsvprnrigvgvidghiyavggshgcihhnsve
ryeperdewhlvapmltrrigvgvavlnrllyavggfdgtnrlnsaecyypernewrmit
amntirsgagvcvlhnciyaaggydgqdqlnsverydvetetwtfvapmkhrrsalgitv
hqgriyvlggydghtfldsvecydpdtdtwsevtrmtsgrsgvgvavt