>4ttdD (D:) observed residues (from ATOM records)
qsvltqppsvsgapgqrvsisctgrssnigagydvhwyqqlpgkapklliygntnrpsgv
pvrfsgsksgtsaslaitglqaedeadyycqsydsslrgsvfgggtkltvlgqpkaapsv
tlfppsseelqankatlvclisdfypgavtvawkadsspvkagvetttpskqsnnkyaas
sylsltpeqwkshrsyscqvthegstvektvapt