>3u4eB (B:) observed residues (from ATOM records)
saltqpasvsgspgqsitiscqgtsndvggyesvswyqqhpgkapkvviydvskrpsgvs
nrfsgsksgntasltisglqaedegdyycksltstrrrvfgtgtkltvlgqpkaapsvtl
fppsseelqankatlvclisdfypgavtvawkadsspvkagvetttpskqsnnkyaassy
lsltpeqwkshksyscqvthegstvektvapt