>6sp4A (A:) observed residues (from ATOM records)
rliytaggyfrqslsyleaynpsdgtwlrladlqvprsglagcvvggllyavggrnnspd
gntdssaldcynpmtnqwspcapmsvprnrigvgvidghiyavggshgcihhnsveryep
erdewhlvapmltrrigvgvavlnrllyavggfdgtnrlnsaecyypernewrmitamnt
irsgagvcvlhnciyaaggydgqdqlnsverydvatatwtfvapmkhrrsalgitvhqgr
iyvlggydghtfldsvecydpdtdtwsevtrmtsgrsgvgvavt