>3argD (D:) observed residues (from ATOM records)
avtqsprnkvavtggkvtlscnqtnnhnnmywyrqdtghglrlihysygagstekgdipd
gykasrpsqenfslilelatpsqtsvyfcasgdaeqffgpgtrltvledlknvfppevav
fepseaeishtqkatlvclatgfypdhvelswwvngkevhsgvctdpqplkeqpalndsr
yalssrlrvsatfwqnprnhfrcqvqfyglsendewtqdrakpvtqivsaeawgra