>4u61E (E:) observed residues (from ATOM records)
nievlnlvtgpdsittielylntrmgqndeskdnygysekvtvanssdqdkptsgeipty
starinlpmlnedltcntltmweavsvktevvgvsslvnvhmatkrmyddkgigfpvegm
nfhmfavggeplelqfltgnyrtdysandklvvppikhqstqglnphykqkltkdgafpv
ecwcpdpsknentryygsytggqstppvlqftntvttvlldengvgplckgdglyvsccd
ivgflvgkdgdmqyrglpryfnillrkrtvrn